test_extensions.py

"""
Unit tests for the extension system.

Tests cover:
- Extension manifest validation
- Extension registry operations
- Extension manager installation/removal
- Command registration
- Catalog stack (multi-catalog support)
"""

import pytest
import json
import os
import platform
import tempfile
import shutil
import tomllib
from pathlib import Path
from datetime import datetime, timezone

from tests.conftest import strip_ansi
from specify_cli.extensions import (
    CatalogEntry,
    CORE_COMMAND_NAMES,
    DEFAULT_HOOK_PRIORITY,
    VALID_EFFECTS,
    ExtensionManifest,
    ExtensionRegistry,
    ExtensionManager,
    CommandRegistrar,
    HookExecutor,
    ExtensionCatalog,
    ExtensionError,
    ValidationError,
    CompatibilityError,
    normalize_priority,
    version_satisfies,
)


def can_create_symlink(tmp_path: Path) -> bool:
    """Return True when the current platform/user can create file symlinks."""
    target = tmp_path / "symlink-target.txt"
    link = tmp_path / "symlink-link.txt"
    target.write_text("ok", encoding="utf-8")
    try:
        os.symlink(target, link)
    except OSError:
        return False
    return link.is_symlink()


# ===== Fixtures =====

@pytest.fixture
def temp_dir():
    """Create a temporary directory for tests."""
    tmpdir = tempfile.mkdtemp()
    yield Path(tmpdir)
    shutil.rmtree(tmpdir)


@pytest.fixture
def valid_manifest_data():
    """Valid extension manifest data."""
    return {
        "schema_version": "1.0",
        "extension": {
            "id": "test-ext",
            "name": "Test Extension",
            "version": "1.0.0",
            "description": "A test extension",
            "author": "Test Author",
            "repository": "https://github.com/test/test-ext",
            "license": "MIT",
        },
        "requires": {
            "speckit_version": ">=0.1.0",
            "commands": ["speckit.tasks"],
        },
        "provides": {
            "commands": [
                {
                    "name": "speckit.test-ext.hello",
                    "file": "commands/hello.md",
                    "description": "Test command",
                }
            ]
        },
        "hooks": {
            "after_tasks": {
                "command": "speckit.test-ext.hello",
                "optional": True,
                "prompt": "Run test?",
            }
        },
        "tags": ["testing", "example"],
    }


@pytest.fixture
def extension_dir(temp_dir, valid_manifest_data):
    """Create a complete extension directory structure."""
    ext_dir = temp_dir / "test-ext"
    ext_dir.mkdir()

    # Write manifest
    import yaml
    manifest_path = ext_dir / "extension.yml"
    with open(manifest_path, 'w') as f:
        yaml.dump(valid_manifest_data, f)

    # Create commands directory
    commands_dir = ext_dir / "commands"
    commands_dir.mkdir()

    # Write command file
    cmd_file = commands_dir / "hello.md"
    cmd_file.write_text("""---
description: "Test hello command"
---

# Test Hello Command

$ARGUMENTS
""")

    return ext_dir


@pytest.fixture
def project_dir(temp_dir):
    """Create a mock spec-kit project directory."""
    proj_dir = temp_dir / "project"
    proj_dir.mkdir()

    # Create .specify directory
    specify_dir = proj_dir / ".specify"
    specify_dir.mkdir()

    return proj_dir


# ===== normalize_priority Tests =====

class TestNormalizePriority:
    """Test normalize_priority helper function."""

    def test_valid_integer(self):
        """Test with valid integer priority."""
        assert normalize_priority(5) == 5
        assert normalize_priority(1) == 1
        assert normalize_priority(100) == 100

    def test_valid_string_number(self):
        """Test with string that can be converted to int."""
        assert normalize_priority("5") == 5
        assert normalize_priority("10") == 10

    def test_zero_returns_default(self):
        """Test that zero priority returns default."""
        assert normalize_priority(0) == 10
        assert normalize_priority(0, default=5) == 5

    def test_negative_returns_default(self):
        """Test that negative priority returns default."""
        assert normalize_priority(-1) == 10
        assert normalize_priority(-100, default=5) == 5

    def test_none_returns_default(self):
        """Test that None returns default."""
        assert normalize_priority(None) == 10
        assert normalize_priority(None, default=5) == 5

    def test_invalid_string_returns_default(self):
        """Test that non-numeric string returns default."""
        assert normalize_priority("invalid") == 10
        assert normalize_priority("abc", default=5) == 5

    def test_float_truncates(self):
        """Test that float is truncated to int."""
        assert normalize_priority(5.9) == 5
        assert normalize_priority(3.1) == 3

    def test_empty_string_returns_default(self):
        """Test that empty string returns default."""
        assert normalize_priority("") == 10

    def test_custom_default(self):
        """Test custom default value."""
        assert normalize_priority(None, default=20) == 20
        assert normalize_priority("invalid", default=1) == 1

    def test_boolean_returns_default(self):
        """Booleans fall back to the default rather than acting as int 0/1."""
        assert normalize_priority(True) == 10
        assert normalize_priority(False) == 10
        assert normalize_priority(True, default=5) == 5


# ===== ExtensionManifest Tests =====

class TestExtensionManifest:
    """Test ExtensionManifest validation and parsing."""

    def test_valid_manifest(self, extension_dir):
        """Test loading a valid manifest."""
        manifest_path = extension_dir / "extension.yml"
        manifest = ExtensionManifest(manifest_path)

        assert manifest.id == "test-ext"
        assert manifest.name == "Test Extension"
        assert manifest.version == "1.0.0"
        assert manifest.description == "A test extension"
        assert len(manifest.commands) == 1
        assert manifest.commands[0]["name"] == "speckit.test-ext.hello"

    def test_core_command_names_match_bundled_templates(self):
        """Core command reservations should stay aligned with bundled templates."""
        commands_dir = Path(__file__).resolve().parent.parent / "templates" / "commands"
        expected = {
            command_file.stem
            for command_file in commands_dir.iterdir()
            if command_file.is_file() and command_file.suffix == ".md"
        }

        assert CORE_COMMAND_NAMES == expected

    def test_missing_required_field(self, temp_dir):
        """Test manifest missing required field."""
        import yaml

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump({"schema_version": "1.0"}, f)  # Missing 'extension'

        with pytest.raises(ValidationError, match="Missing required field"):
            ExtensionManifest(manifest_path)

    def test_non_mapping_yaml_raises_validation_error(self, temp_dir):
        """Manifest whose YAML root is a scalar or list raises ValidationError, not TypeError."""
        manifest_path = temp_dir / "extension.yml"
        for bad_content in ("42\n", "[]\n", "null\n"):
            manifest_path.write_text(bad_content)
            with pytest.raises(ValidationError, match="YAML mapping"):
                ExtensionManifest(manifest_path)

    def test_utf8_non_ascii_description_loads(self, temp_dir, valid_manifest_data):
        """Regression for #2325: non-ASCII (UTF-8) description loads on any platform.

        On Windows, Python's default text-mode encoding is the locale codepage
        (e.g. cp1252/GBK), which raises UnicodeDecodeError on UTF-8 bytes
        outside the ASCII range. The loader must open with encoding='utf-8'.
        """
        import yaml

        valid_manifest_data["extension"]["description"] = "中文测试 — émojis 🚀"
        manifest_path = temp_dir / "extension.yml"
        # Write UTF-8 bytes explicitly so the test exercises the read path,
        # not the (locale-dependent) write path.
        manifest_path.write_bytes(
            yaml.safe_dump(valid_manifest_data, allow_unicode=True).encode("utf-8")
        )

        manifest = ExtensionManifest(manifest_path)
        assert manifest.description == "中文测试 — émojis 🚀"

    def test_invalid_utf8_bytes_raises_validation_error(self, temp_dir):
        """Negative case: file containing invalid UTF-8 bytes raises ValidationError, not raw UnicodeDecodeError."""
        manifest_path = temp_dir / "extension.yml"
        # 0xFF/0xFE are not valid UTF-8 lead bytes.
        manifest_path.write_bytes(b"\xff\xfe not valid utf-8 \xff\n")

        with pytest.raises(ValidationError, match="not valid UTF-8"):
            ExtensionManifest(manifest_path)

    def test_invalid_extension_id(self, temp_dir, valid_manifest_data):
        """Test manifest with invalid extension ID format."""
        import yaml

        valid_manifest_data["extension"]["id"] = "Invalid_ID"  # Uppercase not allowed

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid extension ID"):
            ExtensionManifest(manifest_path)

    def test_invalid_version(self, temp_dir, valid_manifest_data):
        """Test manifest with invalid semantic version."""
        import yaml

        valid_manifest_data["extension"]["version"] = "invalid"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid version"):
            ExtensionManifest(manifest_path)

    def test_valid_category(self, temp_dir, valid_manifest_data):
        """Test manifest with various category values (free-form string)."""
        import yaml

        for category in ("docs", "code", "process", "integration", "visibility", "custom-category"):
            valid_manifest_data["extension"]["category"] = category
            manifest_path = temp_dir / "extension.yml"
            with open(manifest_path, 'w') as f:
                yaml.dump(valid_manifest_data, f)
            manifest = ExtensionManifest(manifest_path)
            assert manifest.category == category

    def test_valid_effect(self, temp_dir, valid_manifest_data):
        """Test manifest with valid effect values."""
        import yaml

        for effect in sorted(VALID_EFFECTS):
            valid_manifest_data["extension"]["effect"] = effect
            manifest_path = temp_dir / "extension.yml"
            with open(manifest_path, 'w') as f:
                yaml.dump(valid_manifest_data, f)
            manifest = ExtensionManifest(manifest_path)
            assert manifest.effect == effect

    def test_invalid_category(self, temp_dir, valid_manifest_data):
        """Test manifest with empty category raises ValidationError."""
        import yaml

        valid_manifest_data["extension"]["category"] = ""
        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid extension.category"):
            ExtensionManifest(manifest_path)

    def test_invalid_effect(self, temp_dir, valid_manifest_data):
        """Test manifest with invalid effect raises ValidationError."""
        import yaml

        valid_manifest_data["extension"]["effect"] = "write-only"
        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid extension.effect"):
            ExtensionManifest(manifest_path)

    def test_category_and_effect_optional(self, temp_dir, valid_manifest_data):
        """Test that omitting category and effect still passes validation."""
        import yaml

        # Ensure no category/effect in data
        valid_manifest_data["extension"].pop("category", None)
        valid_manifest_data["extension"].pop("effect", None)
        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)
        assert manifest.category is None
        assert manifest.effect is None

    def test_invalid_command_name(self, temp_dir, valid_manifest_data):
        """Test manifest with command name that cannot be auto-corrected raises ValidationError."""
        import yaml

        valid_manifest_data["provides"]["commands"][0]["name"] = "invalid-name"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid command name"):
            ExtensionManifest(manifest_path)

    @pytest.mark.parametrize(
        "bad_file",
        ["../../../outside.md", "../escape.md", "a/../../escape.md", "/abs/outside.md", "C:escape.md", "C:\\Windows\\x.md", "..\\..\\escape.md"],
    )
    def test_command_file_traversal_rejected(self, temp_dir, valid_manifest_data, bad_file):
        """Manifest 'file' field with traversal/absolute path raises ValidationError.

        Defense-in-depth for GHSA-w5fv-7w9x-7fc5.
        """
        import yaml

        valid_manifest_data["provides"]["commands"][0]["file"] = bad_file

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w', encoding='utf-8') as f:
            yaml.safe_dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid command 'file'"):
            ExtensionManifest(manifest_path)

    @pytest.mark.parametrize("bad_file", [" commands/hello.md", "commands/hello.md ", "\tcommands/hello.md"])
    def test_command_file_whitespace_rejected(self, temp_dir, valid_manifest_data, bad_file):
        """Manifest 'file' with leading/trailing whitespace raises ValidationError."""
        import yaml

        valid_manifest_data["provides"]["commands"][0]["file"] = bad_file

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w', encoding='utf-8') as f:
            yaml.safe_dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="leading or trailing whitespace"):
            ExtensionManifest(manifest_path)

    def test_command_name_autocorrect_speckit_prefix(self, temp_dir, valid_manifest_data):
        """Test that 'speckit.command' is auto-corrected to 'speckit.{ext_id}.command'."""
        import yaml

        valid_manifest_data["provides"]["commands"][0]["name"] = "speckit.hello"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)

        assert manifest.commands[0]["name"] == "speckit.test-ext.hello"
        assert len(manifest.warnings) == 1
        assert "speckit.hello" in manifest.warnings[0]
        assert "speckit.test-ext.hello" in manifest.warnings[0]

    def test_command_name_autocorrect_matching_ext_id_prefix(self, temp_dir, valid_manifest_data):
        """Test that '{ext_id}.command' is auto-corrected to 'speckit.{ext_id}.command'."""
        import yaml

        # Set ext_id to match the legacy namespace so correction is valid
        valid_manifest_data["extension"]["id"] = "docguard"
        valid_manifest_data["provides"]["commands"][0]["name"] = "docguard.guard"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)

        assert manifest.commands[0]["name"] == "speckit.docguard.guard"
        assert len(manifest.warnings) == 1
        assert "docguard.guard" in manifest.warnings[0]
        assert "speckit.docguard.guard" in manifest.warnings[0]

    def test_command_name_mismatched_namespace_not_corrected(self, temp_dir, valid_manifest_data):
        """Test that 'X.command' is NOT corrected when X doesn't match ext_id."""
        import yaml

        # ext_id is "test-ext" but command uses a different namespace
        valid_manifest_data["provides"]["commands"][0]["name"] = "docguard.guard"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid command name"):
            ExtensionManifest(manifest_path)

    def test_alias_free_form_accepted(self, temp_dir, valid_manifest_data):
        """Aliases are free-form — a 'speckit.command' alias must be accepted unchanged."""
        import yaml

        valid_manifest_data["provides"]["commands"][0]["aliases"] = ["speckit.hello"]

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)

        assert manifest.commands[0]["aliases"] == ["speckit.hello"]
        assert manifest.warnings == []

    def test_valid_command_name_has_no_warnings(self, temp_dir, valid_manifest_data):
        """Test that a correctly-named command produces no warnings."""
        import yaml

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)

        assert manifest.warnings == []

    def test_no_commands_no_hooks(self, temp_dir, valid_manifest_data):
        """Test manifest with no commands and no hooks provided."""
        import yaml

        valid_manifest_data["provides"]["commands"] = []
        valid_manifest_data.pop("hooks", None)

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="must provide at least one command or hook"):
            ExtensionManifest(manifest_path)

    def test_hooks_only_extension(self, temp_dir, valid_manifest_data):
        """Test manifest with hooks but no commands is valid."""
        import yaml

        valid_manifest_data["provides"]["commands"] = []
        valid_manifest_data["hooks"] = {
            "after_specify": {
                "command": "speckit.test-ext.notify",
                "optional": True,
                "prompt": "Run notification?",
            }
        }

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)
        assert manifest.id == valid_manifest_data["extension"]["id"]
        assert len(manifest.commands) == 0
        assert len(manifest.hooks) == 1

    def test_commands_null_rejected(self, temp_dir, valid_manifest_data):
        """Test manifest with commands: null is rejected."""
        import yaml

        valid_manifest_data["provides"]["commands"] = None

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid provides.commands"):
            ExtensionManifest(manifest_path)

    def test_hooks_not_dict_rejected(self, temp_dir, valid_manifest_data):
        """Test manifest with hooks as a list is rejected."""
        import yaml

        valid_manifest_data["hooks"] = ["not", "a", "dict"]

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid hooks"):
            ExtensionManifest(manifest_path)

    def test_non_dict_hook_entry_raises_validation_error(self, temp_dir, valid_manifest_data):
        """Non-mapping hook entries must raise ValidationError, not silently skip."""
        import yaml

        valid_manifest_data["hooks"]["after_tasks"] = "speckit.test-ext.hello"

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w') as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="Invalid hook 'after_tasks'"):
            ExtensionManifest(manifest_path)

    def test_hook_single_mapping_still_accepted(self, extension_dir):
        """Existing single-mapping hook manifests parse unchanged (regression)."""
        manifest_path = extension_dir / "extension.yml"
        manifest = ExtensionManifest(manifest_path)

        assert "after_tasks" in manifest.hooks
        assert isinstance(manifest.hooks["after_tasks"], dict)
        assert manifest.hooks["after_tasks"]["command"] == "speckit.test-ext.hello"

    def test_hook_list_of_mappings_accepted(self, temp_dir, valid_manifest_data):
        """A hook event may be configured as a list of mappings."""
        import yaml

        valid_manifest_data["provides"]["commands"].append({
            "name": "speckit.test-ext.bye",
            "file": "commands/bye.md",
            "description": "Second test command",
        })
        valid_manifest_data["hooks"]["after_tasks"] = [
            {"command": "speckit.test-ext.hello", "description": "first"},
            {"command": "speckit.test-ext.bye", "description": "second"},
        ]

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)

        entries = manifest.hooks["after_tasks"]
        assert isinstance(entries, list)
        assert [e["command"] for e in entries] == [
            "speckit.test-ext.hello",
            "speckit.test-ext.bye",
        ]

    def test_hook_list_with_non_mapping_entry_rejected(self, temp_dir, valid_manifest_data):
        """A list entry that is not a mapping must raise ValidationError."""
        import yaml

        valid_manifest_data["hooks"]["after_tasks"] = [
            {"command": "speckit.test-ext.hello"},
            "not-a-mapping",
        ]

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(
            ValidationError,
            match="Invalid hook 'after_tasks': expected a mapping or list of mappings",
        ):
            ExtensionManifest(manifest_path)

    def test_hook_list_command_refs_normalized(self, temp_dir, valid_manifest_data):
        """Alias-form command refs are lifted to canonical form for every entry
        in a list hook, each emitting a warning."""
        import yaml

        valid_manifest_data["provides"]["commands"].append({
            "name": "speckit.test-ext.bye",
            "file": "commands/bye.md",
            "description": "Second test command",
        })
        valid_manifest_data["hooks"]["after_tasks"] = [
            {"command": "test-ext.hello"},
            {"command": "test-ext.bye"},
        ]

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)

        manifest = ExtensionManifest(manifest_path)

        assert [e["command"] for e in manifest.hooks["after_tasks"]] == [
            "speckit.test-ext.hello",
            "speckit.test-ext.bye",
        ]
        lifted = [w for w in manifest.warnings if "updated to canonical form" in w]
        assert len(lifted) == 2

    def test_hook_empty_list_rejected(self, temp_dir, valid_manifest_data):
        """An empty list for a hook event is rejected rather than silently
        registering nothing."""
        import yaml

        valid_manifest_data["hooks"]["after_tasks"] = []

        manifest_path = temp_dir / "extension.yml"
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)

        with pytest.raises(ValidationError, match="must contain at least one entry"):
            ExtensionManifest(manifest_path)

    def test_hook_priority_field_validation(self, temp_dir, valid_manifest_data):
        """Hook entry ``priority`` must be a positive integer when provided."""
        import yaml

        manifest_path = temp_dir / "extension.yml"

        valid_manifest_data["hooks"]["after_tasks"] = {
            "command": "speckit.test-ext.hello",
            "priority": "high",
        }
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)
        with pytest.raises(ValidationError, match="invalid 'priority'.*integer"):
            ExtensionManifest(manifest_path)

        valid_manifest_data["hooks"]["after_tasks"]["priority"] = 0
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)
        with pytest.raises(ValidationError, match="invalid 'priority'.*>= 1"):
            ExtensionManifest(manifest_path)

        # bool is a subclass of int, so it must be rejected explicitly.
        valid_manifest_data["hooks"]["after_tasks"]["priority"] = True
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)
        with pytest.raises(ValidationError, match="invalid 'priority'.*integer"):
            ExtensionManifest(manifest_path)

        valid_manifest_data["hooks"]["after_tasks"]["priority"] = 5
        with open(manifest_path, 'w', encoding="utf-8") as f:
            yaml.dump(valid_manifest_data, f)
        manifest = ExtensionManifest(manifest_path)
        assert manifest.hooks["after_tasks"]["priority"] == 5

    def test_manifest_hash(self, extension_dir):
        """Test manifest hash calculation."""
        manifest_path = extension_dir / "extension.yml"
        manifest = ExtensionManifest(manifest_path)

        hash_value = manifest.get_hash()
        assert hash_value.startswith("sha256:")
        assert len(hash_value) > 10


# ===== ExtensionRegistry Tests =====

class TestExtensionRegistry:
    """Test ExtensionRegistry operations."""

    def test_empty_registry(self, temp_dir):
        """Test creating a new empty registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        assert registry.data["schema_version"] == "1.0"
        assert registry.data["extensions"] == {}
        assert len(registry.list()) == 0

    def test_add_extension(self, temp_dir):
        """Test adding an extension to registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        metadata = {
            "version": "1.0.0",
            "source": "local",
            "enabled": True,
        }
        registry.add("test-ext", metadata)

        assert registry.is_installed("test-ext")
        ext_data = registry.get("test-ext")
        assert ext_data["version"] == "1.0.0"
        assert "installed_at" in ext_data

    def test_remove_extension(self, temp_dir):
        """Test removing an extension from registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0"})

        assert registry.is_installed("test-ext")

        registry.remove("test-ext")

        assert not registry.is_installed("test-ext")
        assert registry.get("test-ext") is None

    def test_registry_persistence(self, temp_dir):
        """Test that registry persists to disk."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        # Create registry and add extension
        registry1 = ExtensionRegistry(extensions_dir)
        registry1.add("test-ext", {"version": "1.0.0"})

        # Load new registry instance
        registry2 = ExtensionRegistry(extensions_dir)

        # Should still have the extension
        assert registry2.is_installed("test-ext")
        assert registry2.get("test-ext")["version"] == "1.0.0"

    def test_update_preserves_installed_at(self, temp_dir):
        """Test that update() preserves the original installed_at timestamp."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0", "enabled": True})

        # Get original installed_at
        original_data = registry.get("test-ext")
        original_installed_at = original_data["installed_at"]

        # Update with new metadata
        registry.update("test-ext", {"version": "2.0.0", "enabled": False})

        # Verify installed_at is preserved
        updated_data = registry.get("test-ext")
        assert updated_data["installed_at"] == original_installed_at
        assert updated_data["version"] == "2.0.0"
        assert updated_data["enabled"] is False

    def test_update_merges_with_existing(self, temp_dir):
        """Test that update() merges new metadata with existing fields."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {
            "version": "1.0.0",
            "enabled": True,
            "registered_commands": {"claude": ["cmd1", "cmd2"]},
        })

        # Update with partial metadata (only enabled field)
        registry.update("test-ext", {"enabled": False})

        # Verify existing fields are preserved
        updated_data = registry.get("test-ext")
        assert updated_data["enabled"] is False
        assert updated_data["version"] == "1.0.0"  # Preserved
        assert updated_data["registered_commands"] == {"claude": ["cmd1", "cmd2"]}  # Preserved

    def test_update_raises_for_missing_extension(self, temp_dir):
        """Test that update() raises KeyError for non-installed extension."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        with pytest.raises(KeyError, match="not installed"):
            registry.update("nonexistent-ext", {"enabled": False})

    def test_restore_overwrites_completely(self, temp_dir):
        """Test that restore() overwrites the registry entry completely."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "2.0.0", "enabled": True})

        # Restore with complete backup data
        backup_data = {
            "version": "1.0.0",
            "enabled": False,
            "installed_at": "2024-01-01T00:00:00+00:00",
            "registered_commands": {"claude": ["old-cmd"]},
        }
        registry.restore("test-ext", backup_data)

        # Verify entry is exactly as restored
        restored_data = registry.get("test-ext")
        assert restored_data == backup_data

    def test_restore_can_recreate_removed_entry(self, temp_dir):
        """Test that restore() can recreate an entry after remove()."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0"})

        # Save backup and remove
        backup = registry.get("test-ext").copy()
        registry.remove("test-ext")
        assert not registry.is_installed("test-ext")

        # Restore should recreate the entry
        registry.restore("test-ext", backup)
        assert registry.is_installed("test-ext")
        assert registry.get("test-ext")["version"] == "1.0.0"

    def test_restore_rejects_none_metadata(self, temp_dir):
        """Test restore() raises ValueError for None metadata."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()
        registry = ExtensionRegistry(extensions_dir)

        with pytest.raises(ValueError, match="metadata must be a dict"):
            registry.restore("test-ext", None)

    def test_restore_rejects_non_dict_metadata(self, temp_dir):
        """Test restore() raises ValueError for non-dict metadata."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()
        registry = ExtensionRegistry(extensions_dir)

        with pytest.raises(ValueError, match="metadata must be a dict"):
            registry.restore("test-ext", "not-a-dict")

        with pytest.raises(ValueError, match="metadata must be a dict"):
            registry.restore("test-ext", ["list", "not", "dict"])

    def test_restore_uses_deep_copy(self, temp_dir):
        """Test restore() deep copies metadata to prevent mutation."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()
        registry = ExtensionRegistry(extensions_dir)

        original_metadata = {
            "version": "1.0.0",
            "nested": {"key": "original"},
        }
        registry.restore("test-ext", original_metadata)

        # Mutate the original metadata after restore
        original_metadata["version"] = "MUTATED"
        original_metadata["nested"]["key"] = "MUTATED"

        # Registry should have the original values
        stored = registry.get("test-ext")
        assert stored["version"] == "1.0.0"
        assert stored["nested"]["key"] == "original"

    def test_get_returns_deep_copy(self, temp_dir):
        """Test that get() returns deep copies for nested structures."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        metadata = {
            "version": "1.0.0",
            "registered_commands": {"claude": ["cmd1"]},
        }
        registry.add("test-ext", metadata)

        fetched = registry.get("test-ext")
        fetched["registered_commands"]["claude"].append("cmd2")

        # Internal registry must remain unchanged.
        internal = registry.data["extensions"]["test-ext"]
        assert internal["registered_commands"] == {"claude": ["cmd1"]}

    def test_get_returns_none_for_corrupted_entry(self, temp_dir):
        """Test that get() returns None for corrupted (non-dict) entries."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        # Directly corrupt the registry with non-dict entries
        registry.data["extensions"]["corrupted-string"] = "not a dict"
        registry.data["extensions"]["corrupted-list"] = ["not", "a", "dict"]
        registry.data["extensions"]["corrupted-int"] = 42
        registry._save()

        # All corrupted entries should return None
        assert registry.get("corrupted-string") is None
        assert registry.get("corrupted-list") is None
        assert registry.get("corrupted-int") is None
        # Non-existent should also return None
        assert registry.get("nonexistent") is None

    def test_list_returns_deep_copy(self, temp_dir):
        """Test that list() returns deep copies for nested structures."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        metadata = {
            "version": "1.0.0",
            "registered_commands": {"claude": ["cmd1"]},
        }
        registry.add("test-ext", metadata)

        listed = registry.list()
        listed["test-ext"]["registered_commands"]["claude"].append("cmd2")

        # Internal registry must remain unchanged.
        internal = registry.data["extensions"]["test-ext"]
        assert internal["registered_commands"] == {"claude": ["cmd1"]}

    def test_list_returns_empty_dict_for_corrupted_registry(self, temp_dir):
        """Test that list() returns empty dict when extensions is not a dict."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()
        registry = ExtensionRegistry(extensions_dir)

        # Corrupt the registry - extensions is a list instead of dict
        registry.data["extensions"] = ["not", "a", "dict"]
        registry._save()

        # list() should return empty dict, not crash
        result = registry.list()
        assert result == {}


# ===== ExtensionManager Tests =====

class TestExtensionManager:
    """Test ExtensionManager installation and removal."""

    def test_check_compatibility_valid(self, extension_dir, project_dir):
        """Test compatibility check with valid version."""
        manager = ExtensionManager(project_dir)
        manifest = ExtensionManifest(extension_dir / "extension.yml")

        # Should not raise
        result = manager.check_compatibility(manifest, "0.1.0")
        assert result is True

    def test_check_compatibility_invalid(self, extension_dir, project_dir):
        """Test compatibility check with invalid version."""
        manager = ExtensionManager(project_dir)
        manifest = ExtensionManifest(extension_dir / "extension.yml")

        # Requires >=0.1.0, but we have 0.0.1
        with pytest.raises(CompatibilityError, match="Extension requires spec-kit"):
            manager.check_compatibility(manifest, "0.0.1")

    def test_install_from_directory(self, extension_dir, project_dir):
        """Test installing extension from directory."""
        manager = ExtensionManager(project_dir)

        manifest = manager.install_from_directory(
            extension_dir,
            "0.1.0",
            register_commands=False  # Skip command registration for now
        )

        assert manifest.id == "test-ext"
        assert manager.registry.is_installed("test-ext")

        # Check extension directory was copied
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert ext_dir.exists()
        assert (ext_dir / "extension.yml").exists()
        assert (ext_dir / "commands" / "hello.md").exists()

    def test_install_from_directory_explicitly_recovers_active_skills_dir(
        self, extension_dir, project_dir, monkeypatch
    ):
        """Extension install should explicitly request active skills-dir recovery."""
        captured = {}

        def fake_register_all(
            self,
            manifest,
            extension_dir,
            project_root,
            link_outputs=False,
            create_missing_active_skills_dir=False,
        ):
            captured["create_missing_active_skills_dir"] = (
                create_missing_active_skills_dir
            )
            return {}

        monkeypatch.setattr(
            CommandRegistrar,
            "register_commands_for_all_agents",
            fake_register_all,
        )

        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=True)

        assert captured["create_missing_active_skills_dir"] is True

    def test_command_registrar_default_does_not_recover_active_skills_dir(
        self, extension_dir, project_dir, monkeypatch
    ):
        """The extension wrapper should preserve the core registrar's conservative default."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar

        captured = {}

        def fake_register_all(
            self,
            commands,
            source_id,
            source_dir,
            project_root,
            context_note=None,
            link_outputs=False,
            create_missing_active_skills_dir=False,
        ):
            captured["create_missing_active_skills_dir"] = (
                create_missing_active_skills_dir
            )
            return {}

        monkeypatch.setattr(
            AgentCommandRegistrar,
            "register_commands_for_all_agents",
            fake_register_all,
        )

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_all_agents(manifest, extension_dir, project_dir)

        assert captured["create_missing_active_skills_dir"] is False

    def test_install_duplicate(self, extension_dir, project_dir):
        """Test installing already installed extension."""
        manager = ExtensionManager(project_dir)

        # Install once
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Try to install again
        with pytest.raises(ExtensionError, match="already installed"):
            manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

    def test_install_force_reinstall(self, extension_dir, project_dir):
        """Test force-reinstalling an already-installed extension."""
        manager = ExtensionManager(project_dir)

        # Install once
        manager.install_from_directory(
            extension_dir, "0.1.0", register_commands=False
        )
        assert manager.registry.is_installed("test-ext")

        # Force-reinstall
        manifest2 = manager.install_from_directory(
            extension_dir, "0.1.0", register_commands=False, force=True
        )

        assert manifest2.id == "test-ext"
        assert manager.registry.is_installed("test-ext")
        # Check extension directory was recreated
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert ext_dir.exists()
        assert (ext_dir / "extension.yml").exists()
        assert (ext_dir / "commands" / "hello.md").exists()

    def test_install_force_config_preserved(self, extension_dir, project_dir):
        """Test that config files are preserved when force-reinstalling."""
        manager = ExtensionManager(project_dir)

        # Install once
        manager.install_from_directory(
            extension_dir, "0.1.0", register_commands=False
        )

        # Create a config file in the installed extension directory
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        config_file = ext_dir / "test-ext-config.yml"
        config_file.write_text("test: config")

        # Force-reinstall
        manager.install_from_directory(
            extension_dir, "0.1.0", register_commands=False, force=True
        )

        # Config file should still exist after reinstall
        new_config = ext_dir / "test-ext-config.yml"
        assert new_config.exists()
        assert new_config.read_text() == "test: config"

    def test_install_force_without_existing(self, extension_dir, project_dir):
        """Test force-install when extension is NOT already installed (works normally)."""
        manager = ExtensionManager(project_dir)

        manifest = manager.install_from_directory(
            extension_dir, "0.1.0", register_commands=False, force=True
        )

        assert manifest.id == "test-ext"
        assert manager.registry.is_installed("test-ext")

    def test_install_from_install_dir_is_rejected_without_data_loss(
        self, extension_dir, project_dir
    ):
        """Installing from an extension's own install dir must fail without
        deleting it (regression for issue #2990)."""
        manager = ExtensionManager(project_dir)

        # Install once so the extension lives at its install destination.
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)
        install_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert install_dir.exists()

        # Re-installing from that same directory with --force must be rejected.
        with pytest.raises(ValidationError, match="install destination"):
            manager.install_from_directory(
                install_dir, "0.1.0", register_commands=False, force=True
            )

        # The directory and its contents must be left intact (no data loss).
        assert install_dir.exists()
        assert (install_dir / "extension.yml").exists()
        assert (install_dir / "commands" / "hello.md").exists()

    def test_install_from_install_dir_is_rejected_when_resolve_fails(
        self, extension_dir, project_dir, monkeypatch
    ):
        """Resolution failures must not bypass the self-install guard."""
        manager = ExtensionManager(project_dir)

        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)
        install_dir = project_dir / ".specify" / "extensions" / "test-ext"

        original_resolve = Path.resolve

        def fail_resolve(self, *args, **kwargs):
            if self in {install_dir, manager.extensions_dir / "test-ext"}:
                raise OSError("cannot resolve path")
            return original_resolve(self, *args, **kwargs)

        monkeypatch.setattr(Path, "resolve", fail_resolve)

        with pytest.raises(ValidationError, match="install destination"):
            manager.install_from_directory(
                install_dir, "0.1.0", register_commands=False, force=True
            )

        assert install_dir.exists()
        assert (install_dir / "extension.yml").exists()
        assert (install_dir / "commands" / "hello.md").exists()

    def test_install_zip_force_reinstall(self, extension_dir, project_dir):
        """Test force-reinstalling from ZIP when already installed."""
        import zipfile
        import tempfile

        manager = ExtensionManager(project_dir)

        # Install once from directory
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Create a ZIP of the extension in a temp directory (not NamedTemporaryFile,
        # which can fail on Windows due to file locking).
        with tempfile.TemporaryDirectory() as tmpdir:
            zip_path = Path(tmpdir) / "test-ext.zip"
            with zipfile.ZipFile(zip_path, "w") as zf:
                for f in extension_dir.rglob("*"):
                    if f.is_file():
                        zf.write(f, f.relative_to(extension_dir))

            # Force-reinstall from ZIP
            manifest = manager.install_from_zip(
                zip_path, "0.1.0", force=True
            )

        assert manifest.id == "test-ext"
        assert manager.registry.is_installed("test-ext")
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert ext_dir.exists()

    def test_install_duplicate_error_mentions_force(self, extension_dir, project_dir):
        """Test that duplicate install error message suggests --force."""
        manager = ExtensionManager(project_dir)

        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        with pytest.raises(ExtensionError, match="--force"):
            manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

    def test_install_rejects_extension_id_in_core_namespace(self, temp_dir, project_dir):
        """Install should reject extension IDs that shadow core commands."""
        import yaml

        ext_dir = temp_dir / "analyze-ext"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "analyze",
                "name": "Analyze Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.analyze.extra",
                        "file": "commands/cmd.md",
                    }
                ]
            },
        }

        (ext_dir / "extension.yml").write_text(yaml.dump(manifest_data))
        (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nBody")

        manager = ExtensionManager(project_dir)
        with pytest.raises(ValidationError, match="conflicts with core command namespace"):
            manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

    def test_install_accepts_free_form_alias(self, temp_dir, project_dir):
        """Aliases are free-form — a short 'speckit.shortcut' alias must be preserved unchanged."""
        import yaml

        ext_dir = temp_dir / "alias-shortcut"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "alias-shortcut",
                "name": "Alias Shortcut",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.alias-shortcut.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.shortcut"],
                    }
                ]
            },
        }

        (ext_dir / "extension.yml").write_text(yaml.dump(manifest_data))
        (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nBody")

        manager = ExtensionManager(project_dir)
        manifest = manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        assert manifest.commands[0]["aliases"] == ["speckit.shortcut"]
        assert manifest.warnings == []

    def test_install_rejects_namespace_squatting(self, temp_dir, project_dir):
        """Install should reject commands and aliases outside the extension namespace."""
        import yaml

        ext_dir = temp_dir / "squat-ext"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "squat-ext",
                "name": "Squat Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.other-ext.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.squat-ext.ok"],
                    }
                ]
            },
        }

        (ext_dir / "extension.yml").write_text(yaml.dump(manifest_data))
        (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nBody")

        manager = ExtensionManager(project_dir)
        with pytest.raises(ValidationError, match="must use extension namespace 'squat-ext'"):
            manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

    def test_install_rejects_command_collision_with_installed_extension(self, temp_dir, project_dir):
        """Install should reject names already claimed by an installed legacy extension."""
        import yaml

        first_dir = temp_dir / "ext-one"
        first_dir.mkdir()
        (first_dir / "commands").mkdir()
        first_manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-one",
                "name": "Extension One",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-one.sync",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.shared.sync"],
                    }
                ]
            },
        }
        (first_dir / "extension.yml").write_text(yaml.dump(first_manifest))
        (first_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nBody")
        installed_ext_dir = project_dir / ".specify" / "extensions" / "ext-one"
        installed_ext_dir.parent.mkdir(parents=True, exist_ok=True)
        shutil.copytree(first_dir, installed_ext_dir)

        second_dir = temp_dir / "ext-two"
        second_dir.mkdir()
        (second_dir / "commands").mkdir()
        second_manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": "shared",
                "name": "Shared Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.shared.sync",
                        "file": "commands/cmd.md",
                    }
                ]
            },
        }
        (second_dir / "extension.yml").write_text(yaml.dump(second_manifest))
        (second_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nBody")

        manager = ExtensionManager(project_dir)
        manager.registry.add("ext-one", {"version": "1.0.0", "source": "local"})

        with pytest.raises(ValidationError, match="already provided by extension 'ext-one'"):
            manager.install_from_directory(second_dir, "0.1.0", register_commands=False)

    def test_remove_extension(self, extension_dir, project_dir):
        """Test removing an installed extension."""
        manager = ExtensionManager(project_dir)

        # Install extension
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        assert ext_dir.exists()

        # Remove extension
        result = manager.remove("test-ext", keep_config=False)

        assert result is True
        assert not manager.registry.is_installed("test-ext")
        assert not ext_dir.exists()

    def test_remove_nonexistent(self, project_dir):
        """Test removing non-existent extension."""
        manager = ExtensionManager(project_dir)

        result = manager.remove("nonexistent")
        assert result is False

    def test_list_installed(self, extension_dir, project_dir):
        """Test listing installed extensions."""
        manager = ExtensionManager(project_dir)

        # Initially empty
        assert len(manager.list_installed()) == 0

        # Install extension
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Should have one extension
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["id"] == "test-ext"
        assert installed[0]["name"] == "Test Extension"
        assert installed[0]["version"] == "1.0.0"
        assert installed[0]["command_count"] == 1
        assert installed[0]["hook_count"] == 1

    def test_config_backup_on_remove(self, extension_dir, project_dir):
        """Test that config files are backed up on removal."""
        manager = ExtensionManager(project_dir)

        # Install extension
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Create a config file
        ext_dir = project_dir / ".specify" / "extensions" / "test-ext"
        config_file = ext_dir / "test-ext-config.yml"
        config_file.write_text("test: config")

        # Remove extension (without keep_config)
        manager.remove("test-ext", keep_config=False)

        # Check backup was created (now in subdirectory per extension)
        backup_dir = project_dir / ".specify" / "extensions" / ".backup" / "test-ext"
        backup_file = backup_dir / "test-ext-config.yml"
        assert backup_file.exists()
        assert backup_file.read_text() == "test: config"


# ===== CommandRegistrar Tests =====

class TestCommandRegistrar:
    """Test CommandRegistrar command registration."""

    def test_kiro_cli_agent_config_present(self):
        """Kiro CLI should be mapped to .kiro/prompts and legacy q removed."""
        assert "kiro-cli" in CommandRegistrar.AGENT_CONFIGS
        assert CommandRegistrar.AGENT_CONFIGS["kiro-cli"]["dir"] == ".kiro/prompts"
        assert "q" not in CommandRegistrar.AGENT_CONFIGS

    def test_codex_agent_config_present(self):
        """Codex should be mapped to .agents/skills."""
        assert "codex" in CommandRegistrar.AGENT_CONFIGS
        assert CommandRegistrar.AGENT_CONFIGS["codex"]["dir"] == ".agents/skills"
        assert CommandRegistrar.AGENT_CONFIGS["codex"]["extension"] == "/SKILL.md"

    def test_pi_agent_config_present(self):
        """Pi should be mapped to .pi/prompts."""
        assert "pi" in CommandRegistrar.AGENT_CONFIGS
        cfg = CommandRegistrar.AGENT_CONFIGS["pi"]
        assert cfg["dir"] == ".pi/prompts"
        assert cfg["format"] == "markdown"
        assert cfg["args"] == "$ARGUMENTS"
        assert cfg["extension"] == ".md"

    def test_qwen_agent_config_is_markdown(self):
        """Qwen should use Markdown format with $ARGUMENTS (not TOML)."""
        assert "qwen" in CommandRegistrar.AGENT_CONFIGS
        cfg = CommandRegistrar.AGENT_CONFIGS["qwen"]
        assert cfg["dir"] == ".qwen/commands"
        assert cfg["format"] == "markdown"
        assert cfg["args"] == "$ARGUMENTS"
        assert cfg["extension"] == ".md"

    def test_parse_frontmatter_valid(self):
        """Test parsing valid YAML frontmatter."""
        content = """---
description: "Test command"
tools:
  - tool1
  - tool2
---

# Command body
$ARGUMENTS
"""
        registrar = CommandRegistrar()
        frontmatter, body = registrar.parse_frontmatter(content)

        assert frontmatter["description"] == "Test command"
        assert frontmatter["tools"] == ["tool1", "tool2"]
        assert "Command body" in body
        assert "$ARGUMENTS" in body

    def test_parse_frontmatter_no_frontmatter(self):
        """Test parsing content without frontmatter."""
        content = "# Just a command\n$ARGUMENTS"

        registrar = CommandRegistrar()
        frontmatter, body = registrar.parse_frontmatter(content)

        assert frontmatter == {}
        assert body == content

    def test_parse_frontmatter_non_mapping_returns_empty_dict(self):
        """Non-mapping YAML frontmatter should not crash downstream renderers."""
        content = """---
- item1
- item2
---

# Command body
"""
        registrar = CommandRegistrar()
        frontmatter, body = registrar.parse_frontmatter(content)

        assert frontmatter == {}
        assert "Command body" in body

    def test_render_frontmatter(self):
        """Test rendering frontmatter to YAML."""
        frontmatter = {
            "description": "Test command",
            "tools": ["tool1", "tool2"]
        }

        registrar = CommandRegistrar()
        output = registrar.render_frontmatter(frontmatter)

        assert output.startswith("---\n")
        assert output.endswith("---\n")
        assert "description: Test command" in output

    def test_render_frontmatter_unicode(self):
        """Test rendering frontmatter preserves non-ASCII characters."""
        frontmatter = {
            "description": "Prüfe Konformität der Implementierung"
        }

        registrar = CommandRegistrar()
        output = registrar.render_frontmatter(frontmatter)

        assert "Prüfe Konformität" in output
        assert "\\u" not in output

    def test_adjust_script_paths_does_not_mutate_input(self):
        """Path adjustments should not mutate caller-owned frontmatter dicts."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar
        registrar = AgentCommandRegistrar()
        original = {
            "scripts": {
                "sh": "../../scripts/bash/setup-plan.sh {ARGS}",
                "ps": "../../scripts/powershell/setup-plan.ps1 {ARGS}",
            }
        }
        before = json.loads(json.dumps(original))

        adjusted = registrar._adjust_script_paths(original)

        assert original == before
        assert adjusted["scripts"]["sh"] == ".specify/scripts/bash/setup-plan.sh {ARGS}"
        assert adjusted["scripts"]["ps"] == ".specify/scripts/powershell/setup-plan.ps1 {ARGS}"

    def test_adjust_script_paths_preserves_extension_local_paths(self):
        """Extension-local script paths should not be rewritten into .specify/.specify."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar
        registrar = AgentCommandRegistrar()
        original = {
            "scripts": {
                "sh": ".specify/extensions/test-ext/scripts/setup.sh {ARGS}",
                "ps": "scripts/powershell/setup-plan.ps1 {ARGS}",
            }
        }

        adjusted = registrar._adjust_script_paths(original)

        assert adjusted["scripts"]["sh"] == ".specify/extensions/test-ext/scripts/setup.sh {ARGS}"
        assert adjusted["scripts"]["ps"] == ".specify/scripts/powershell/setup-plan.ps1 {ARGS}"

    def test_rewrite_project_relative_paths_preserves_extension_local_body_paths(self):
        """Body rewrites should preserve extension-local assets while fixing top-level refs."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar

        body = (
            "Read `.specify/extensions/test-ext/templates/spec.md`\n"
            "Run scripts/bash/setup-plan.sh\n"
        )

        rewritten = AgentCommandRegistrar.rewrite_project_relative_paths(body)

        assert ".specify/extensions/test-ext/templates/spec.md" in rewritten
        assert ".specify/scripts/bash/setup-plan.sh" in rewritten

    def test_render_toml_command_handles_embedded_triple_double_quotes(self):
        """TOML renderer should stay valid when body includes triple double-quotes."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar
        registrar = AgentCommandRegistrar()
        output = registrar.render_toml_command(
            {"description": "x"},
            'line1\n"""danger"""\nline2',
            "extension:test-ext",
        )

        assert "prompt = '''" in output
        assert '"""danger"""' in output

    def test_render_toml_command_escapes_when_both_triple_quote_styles_exist(self):
        """If body has both triple quote styles, fall back to escaped basic string."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar
        registrar = AgentCommandRegistrar()
        output = registrar.render_toml_command(
            {"description": "x"},
            'a """ b\nc \'\'\' d',
            "extension:test-ext",
        )

        assert 'prompt = "' in output
        assert "\\n" in output
        assert "\\\"\\\"\\\"" in output

    def test_render_toml_command_preserves_multiline_description(self):
        """Multiline descriptions should render as parseable TOML with preserved semantics."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar

        registrar = AgentCommandRegistrar()
        output = registrar.render_toml_command(
            {"description": "first line\nsecond line\n"},
            "body",
            "extension:test-ext",
        )

        parsed = tomllib.loads(output)

        assert parsed["description"] == "first line\nsecond line\n"

    def test_register_commands_for_claude(self, extension_dir, project_dir):
        """Test registering commands for Claude agent."""
        # Create .claude directory
        claude_dir = project_dir / ".claude" / "skills"
        claude_dir.mkdir(parents=True)

        ExtensionManager(project_dir)  # Initialize manager (side effects only)
        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_claude(
            manifest,
            extension_dir,
            project_dir
        )

        assert len(registered) == 1
        assert "speckit.test-ext.hello" in registered

        # Check command file was created
        cmd_file = claude_dir / "speckit-test-ext-hello" / "SKILL.md"
        assert cmd_file.exists()

        content = cmd_file.read_text()
        assert "description: Test hello command" in content
        assert "test-ext" in content

    def test_command_with_aliases(self, project_dir, temp_dir):
        """Test registering a command with aliases."""
        import yaml

        # Create extension with command alias
        ext_dir = temp_dir / "ext-alias"
        ext_dir.mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-alias",
                "name": "Extension with Alias",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {
                "speckit_version": ">=0.1.0",
            },
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-alias.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.ext-alias.shortcut"],
                    }
                ]
            },
        }

        with open(ext_dir / "extension.yml", 'w') as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands").mkdir()
        (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\n\nTest")

        claude_dir = project_dir / ".claude" / "skills"
        claude_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_claude(manifest, ext_dir, project_dir)

        assert len(registered) == 2
        assert "speckit.ext-alias.cmd" in registered
        assert "speckit.ext-alias.shortcut" in registered
        assert (claude_dir / "speckit-ext-alias-cmd" / "SKILL.md").exists()
        assert (claude_dir / "speckit-ext-alias-shortcut" / "SKILL.md").exists()

    def test_unregister_commands_for_codex_skills_uses_mapped_names(self, project_dir):
        """Codex skill cleanup should use the same mapped names as registration."""
        skills_dir = project_dir / ".agents" / "skills"
        (skills_dir / "speckit-specify").mkdir(parents=True)
        (skills_dir / "speckit-specify" / "SKILL.md").write_text("body")
        (skills_dir / "speckit-shortcut").mkdir(parents=True)
        (skills_dir / "speckit-shortcut" / "SKILL.md").write_text("body")

        registrar = CommandRegistrar()
        registrar.unregister_commands(
            {"codex": ["speckit.specify", "speckit.shortcut"]},
            project_dir,
        )

        assert not (skills_dir / "speckit-specify" / "SKILL.md").exists()
        assert not (skills_dir / "speckit-shortcut" / "SKILL.md").exists()

    def test_unregister_commands_handles_legacy_dot_notated_files(self, project_dir):
        """Unregister should clean up both legacy dot-notated and new hyphenated files."""
        # 1. Mock an agent that uses hyphenated/formatted names (e.g. Cline)
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar
        registrar = AgentCommandRegistrar()

        # We'll use "cline" since it has format_name
        assert "cline" in registrar.AGENT_CONFIGS
        cline_config = registrar.AGENT_CONFIGS["cline"]
        cline_dir = project_dir / cline_config["dir"]
        cline_dir.mkdir(parents=True, exist_ok=True)

        # 2. Create both legacy and new files
        # Command name: speckit.git.commit
        # Formatted name: speckit-git-commit
        cmd_name = "speckit.git.commit"
        formatted_name = "speckit-git-commit"

        legacy_file = cline_dir / f"{cmd_name}.md"
        formatted_file = cline_dir / f"{formatted_name}.md"

        legacy_file.write_text("legacy body")
        formatted_file.write_text("formatted body")

        assert legacy_file.exists()
        assert formatted_file.exists()

        # 3. Call unregister
        registrar.unregister_commands({"cline": [cmd_name]}, project_dir)

        # 4. Verify both are gone
        assert not legacy_file.exists(), "Legacy dot-notated file should be removed"
        assert (
            not formatted_file.exists()
        ), "Formatted hyphenated file should be removed"

    def test_register_commands_for_all_agents_distinguishes_codex_from_amp(self, extension_dir, project_dir):
        """A Codex project under .agents/skills should not implicitly activate Amp."""
        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_all_agents(manifest, extension_dir, project_dir)

        assert "codex" in registered
        assert "amp" not in registered
        assert not (project_dir / ".agents" / "commands").exists()

    def test_codex_skill_registration_writes_skill_frontmatter(self, extension_dir, project_dir):
        """Codex SKILL.md output should use skills-oriented frontmatter."""
        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent("codex", manifest, extension_dir, project_dir)

        skill_file = skills_dir / "speckit-test-ext-hello" / "SKILL.md"
        assert skill_file.exists()

        content = skill_file.read_text()
        assert "name: speckit-test-ext-hello" in content
        assert "description: Test hello command" in content
        assert "compatibility:" in content
        assert "metadata:" in content
        assert "source: test-ext:commands/hello.md" in content
        assert "<!-- Extension:" not in content

    def test_codex_skill_registration_resolves_script_placeholders(self, project_dir, temp_dir):
        """Codex SKILL.md overrides should resolve script placeholders."""
        import yaml

        ext_dir = temp_dir / "ext-scripted"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-scripted",
                "name": "Scripted Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-scripted.plan",
                        "file": "commands/plan.md",
                        "description": "Scripted command",
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands" / "plan.md").write_text(
            """---
description: "Scripted command"
scripts:
  sh: ../../scripts/bash/setup-plan.sh --json "{ARGS}"
  ps: ../../scripts/powershell/setup-plan.ps1 -Json
---

Run {SCRIPT}
Agent __AGENT__
"""
        )

        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text('{"ai":"codex","ai_skills":true,"script":"sh"}')

        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent("codex", manifest, ext_dir, project_dir)

        skill_file = skills_dir / "speckit-ext-scripted-plan" / "SKILL.md"
        assert skill_file.exists()

        content = skill_file.read_text()
        assert "{SCRIPT}" not in content
        assert "__AGENT__" not in content
        assert "{ARGS}" not in content
        assert '.specify/scripts/bash/setup-plan.sh --json "$ARGUMENTS"' in content

    @pytest.mark.parametrize("agent_name,skills_path", [
        ("codex", ".agents/skills"),
        ("kimi", ".kimi/skills"),
        ("claude", ".claude/skills"),
        ("cursor-agent", ".cursor/skills"),
        ("trae", ".trae/skills"),
        ("agy", ".agents/skills"),
    ])
    def test_all_skill_agents_register_commands_with_resolved_placeholders(
        self, project_dir, temp_dir, agent_name, skills_path
    ):
        """All SKILL.md agents must produce fully resolved SKILL.md files when commands are registered."""
        import yaml

        ext_dir = temp_dir / f"ext-{agent_name}"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": f"ext-{agent_name}",
                "name": "Scripted Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": f"speckit.ext-{agent_name}.run",
                        "file": "commands/run.md",
                        "description": "Scripted command",
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands" / "run.md").write_text(
            "---\n"
            "description: Scripted command\n"
            "scripts:\n"
            '  sh: ../../scripts/bash/setup-plan.sh --json "{ARGS}"\n'
            "---\n\n"
            "Run {SCRIPT}\n"
            "Agent is __AGENT__.\n"
        )

        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(f'{{"ai":"{agent_name}","script":"sh"}}')

        skills_dir = project_dir
        for part in skills_path.split("/"):
            skills_dir = skills_dir / part
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(agent_name, manifest, ext_dir, project_dir)

        skill_dir_name = f"speckit-ext-{agent_name}-run"
        skill_file = skills_dir / skill_dir_name / "SKILL.md"
        assert skill_file.exists(), f"SKILL.md not created for {agent_name}"

        content = skill_file.read_text()
        assert "{SCRIPT}" not in content, f"{{SCRIPT}} not resolved for {agent_name}"
        assert "__AGENT__" not in content, f"__AGENT__ not resolved for {agent_name}"
        assert "{ARGS}" not in content, f"{{ARGS}} not resolved for {agent_name}"
        assert '.specify/scripts/bash/setup-plan.sh' in content

    def test_codex_skill_alias_frontmatter_matches_alias_name(self, project_dir, temp_dir):
        """Codex alias skills should render their own matching `name:` frontmatter."""
        import yaml

        ext_dir = temp_dir / "ext-alias-skill"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-alias-skill",
                "name": "Alias Skill Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-alias-skill.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.ext-alias-skill.shortcut"],
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Alias skill\n---\n\nBody\n")

        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent("codex", manifest, ext_dir, project_dir)

        primary = skills_dir / "speckit-ext-alias-skill-cmd" / "SKILL.md"
        alias = skills_dir / "speckit-ext-alias-skill-shortcut" / "SKILL.md"

        assert primary.exists()
        assert alias.exists()
        assert "name: speckit-ext-alias-skill-cmd" in primary.read_text()
        assert "name: speckit-ext-alias-skill-shortcut" in alias.read_text()

    def test_codex_skill_registration_uses_fallback_script_variant_without_init_options(
        self, project_dir, temp_dir
    ):
        """Codex placeholder substitution should still work without init-options.json."""
        import yaml

        ext_dir = temp_dir / "ext-script-fallback"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-script-fallback",
                "name": "Script fallback",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-script-fallback.plan",
                        "file": "commands/plan.md",
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands" / "plan.md").write_text(
            """---
description: "Fallback scripted command"
scripts:
  sh: ../../scripts/bash/setup-plan.sh --json "{ARGS}"
  ps: ../../scripts/powershell/setup-plan.ps1 -Json
---

Run {SCRIPT}
"""
        )

        # Intentionally do NOT create .specify/init-options.json
        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent("codex", manifest, ext_dir, project_dir)

        skill_file = skills_dir / "speckit-ext-script-fallback-plan" / "SKILL.md"
        assert skill_file.exists()

        content = skill_file.read_text()
        assert "{SCRIPT}" not in content
        if platform.system().lower().startswith("win"):
            assert ".specify/scripts/powershell/setup-plan.ps1 -Json" in content
        else:
            assert '.specify/scripts/bash/setup-plan.sh --json "$ARGUMENTS"' in content

    def test_codex_skill_registration_handles_non_dict_init_options(
        self, project_dir, temp_dir
    ):
        """Non-dict init-options payloads should not crash skill placeholder resolution."""
        import yaml

        ext_dir = temp_dir / "ext-script-list-init"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-script-list-init",
                "name": "List init options",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-script-list-init.plan",
                        "file": "commands/plan.md",
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands" / "plan.md").write_text(
            """---
description: "List init scripted command"
scripts:
  sh: ../../scripts/bash/setup-plan.sh --json "{ARGS}"
---

Run {SCRIPT}
"""
        )

        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text("[]")

        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent("codex", manifest, ext_dir, project_dir)

        content = (skills_dir / "speckit-ext-script-list-init-plan" / "SKILL.md").read_text()
        assert '.specify/scripts/bash/setup-plan.sh --json "$ARGUMENTS"' in content

    def test_codex_skill_registration_fallback_prefers_powershell_on_windows(
        self, project_dir, temp_dir, monkeypatch
    ):
        """Without init metadata, Windows fallback should prefer ps scripts over sh."""
        import yaml

        monkeypatch.setattr("specify_cli.agents.platform.system", lambda: "Windows")

        ext_dir = temp_dir / "ext-script-windows-fallback"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-script-windows-fallback",
                "name": "Script fallback windows",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-script-windows-fallback.plan",
                        "file": "commands/plan.md",
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands" / "plan.md").write_text(
            """---
description: "Windows fallback scripted command"
scripts:
  sh: ../../scripts/bash/setup-plan.sh --json "{ARGS}"
  ps: ../../scripts/powershell/setup-plan.ps1 -Json
---

Run {SCRIPT}
"""
        )

        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent("codex", manifest, ext_dir, project_dir)

        skill_file = skills_dir / "speckit-ext-script-windows-fallback-plan" / "SKILL.md"
        assert skill_file.exists()

        content = skill_file.read_text()
        assert ".specify/scripts/powershell/setup-plan.ps1 -Json" in content
        assert ".specify/scripts/bash/setup-plan.sh" not in content

    def test_register_commands_for_copilot(self, extension_dir, project_dir):
        """Test registering commands for Copilot agent with .agent.md extension."""
        # Create .github/agents directory (Copilot project)
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_agent(
            "copilot", manifest, extension_dir, project_dir
        )

        assert len(registered) == 1
        assert "speckit.test-ext.hello" in registered

        # Verify command file uses .agent.md extension
        cmd_file = agents_dir / "speckit.test-ext.hello.agent.md"
        assert cmd_file.exists()

        # Verify NO plain .md file was created
        plain_md_file = agents_dir / "speckit.test-ext.hello.md"
        assert not plain_md_file.exists()

        content = cmd_file.read_text()
        assert "description: Test hello command" in content
        assert "test-ext" in content

    def test_dev_register_commands_symlinks_rendered_copilot_agent(
        self, extension_dir, project_dir, temp_dir
    ):
        """Dev-mode registration should symlink agent files to rendered outputs."""
        if not can_create_symlink(temp_dir):
            pytest.skip("Current platform/user cannot create symlinks")

        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_agent(
            "copilot",
            manifest,
            extension_dir,
            project_dir,
            link_outputs=True,
        )

        assert registered == ["speckit.test-ext.hello"]

        cmd_file = agents_dir / "speckit.test-ext.hello.agent.md"
        assert cmd_file.is_symlink()

        target = cmd_file.resolve()
        assert ".specify-dev" in target.parts
        assert target.is_file()
        assert "Extension: test-ext" in cmd_file.read_text(encoding="utf-8")

    def test_dev_register_commands_falls_back_to_copy_when_symlink_fails(
        self, extension_dir, project_dir, monkeypatch
    ):
        """Dev-mode registration stays functional when symlinks are unavailable."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        def raise_symlink_error(target, link):
            raise OSError("symlink unavailable")

        monkeypatch.setattr("specify_cli.agents.os.symlink", raise_symlink_error)

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "copilot",
            manifest,
            extension_dir,
            project_dir,
            link_outputs=True,
        )

        cmd_file = agents_dir / "speckit.test-ext.hello.agent.md"
        assert cmd_file.exists()
        assert not cmd_file.is_symlink()
        assert "Extension: test-ext" in cmd_file.read_text(encoding="utf-8")
        assert (
            extension_dir
            / ".specify-dev"
            / "agent-commands"
            / "copilot"
            / "speckit.test-ext.hello.agent.md"
        ).exists()

    def test_dev_register_commands_falls_back_to_copy_when_relpath_fails(
        self, extension_dir, project_dir, monkeypatch
    ):
        """Dev-mode registration stays functional across Windows drive roots."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        def raise_relpath_error(path, start=None):
            raise ValueError("path is on mount 'D:', start on mount 'C:'")

        monkeypatch.setattr("specify_cli.agents.os.path.relpath", raise_relpath_error)

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "copilot",
            manifest,
            extension_dir,
            project_dir,
            link_outputs=True,
        )

        cmd_file = agents_dir / "speckit.test-ext.hello.agent.md"
        assert cmd_file.exists()
        assert not cmd_file.is_symlink()
        assert "Extension: test-ext" in cmd_file.read_text(encoding="utf-8")
        assert (
            extension_dir
            / ".specify-dev"
            / "agent-commands"
            / "copilot"
            / "speckit.test-ext.hello.agent.md"
        ).exists()

    def test_dev_register_commands_falls_back_to_copy_when_cache_write_fails(
        self, extension_dir, project_dir, monkeypatch
    ):
        """Dev-mode registration stays functional when the dev cache is unwritable."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)
        original_write_text = Path.write_text

        def raise_cache_write_error(path, *args, **kwargs):
            if ".specify-dev" in path.parts:
                raise OSError("cache is not writable")
            return original_write_text(path, *args, **kwargs)

        monkeypatch.setattr(Path, "write_text", raise_cache_write_error)

        manifest = ExtensionManifest(extension_dir / "extension.yml")
        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "copilot",
            manifest,
            extension_dir,
            project_dir,
            link_outputs=True,
        )

        cmd_file = agents_dir / "speckit.test-ext.hello.agent.md"
        assert cmd_file.exists()
        assert not cmd_file.is_symlink()
        assert "Extension: test-ext" in cmd_file.read_text(encoding="utf-8")
        assert not (
            extension_dir
            / ".specify-dev"
            / "agent-commands"
            / "copilot"
            / "speckit.test-ext.hello.agent.md"
        ).exists()

    def test_dev_register_commands_rejects_cache_path_traversal(self, temp_dir):
        """Dev-mode cache writes must stay inside the agent cache root."""
        from specify_cli.agents import CommandRegistrar as AgentCommandRegistrar

        source_dir = temp_dir / "extension"
        source_dir.mkdir()
        commands_dir = temp_dir / "commands"
        commands_dir.mkdir()

        with pytest.raises(ValueError, match="escapes directory"):
            AgentCommandRegistrar._write_registered_output(
                commands_dir / "safe.md",
                "content",
                source_dir,
                "copilot",
                "../escaped",
                ".md",
                True,
            )

        assert not (
            source_dir
            / ".specify-dev"
            / "agent-commands"
            / "escaped.md"
        ).exists()

    def test_copilot_companion_prompt_created(self, extension_dir, project_dir):
        """Test that companion .prompt.md files are created in .github/prompts/."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "copilot", manifest, extension_dir, project_dir
        )

        # Verify companion .prompt.md file exists
        prompt_file = project_dir / ".github" / "prompts" / "speckit.test-ext.hello.prompt.md"
        assert prompt_file.exists()

        # Verify content has correct agent frontmatter
        content = prompt_file.read_text()
        assert content == "---\nagent: speckit.test-ext.hello\n---\n"

    def test_copilot_aliases_get_companion_prompts(self, project_dir, temp_dir):
        """Test that aliases also get companion .prompt.md files for Copilot."""
        import yaml

        ext_dir = temp_dir / "ext-alias-copilot"
        ext_dir.mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "ext-alias-copilot",
                "name": "Extension with Alias",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.ext-alias-copilot.cmd",
                        "file": "commands/cmd.md",
                        "aliases": ["speckit.ext-alias-copilot.shortcut"],
                    }
                ]
            },
        }

        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)

        (ext_dir / "commands").mkdir()
        (ext_dir / "commands" / "cmd.md").write_text(
            "---\ndescription: Test\n---\n\nTest"
        )

        # Set up Copilot project
        (project_dir / ".github" / "agents").mkdir(parents=True)

        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar = CommandRegistrar()
        registered = registrar.register_commands_for_agent(
            "copilot", manifest, ext_dir, project_dir
        )

        assert len(registered) == 2

        # Both primary and alias get companion .prompt.md
        prompts_dir = project_dir / ".github" / "prompts"
        assert (prompts_dir / "speckit.ext-alias-copilot.cmd.prompt.md").exists()
        assert (prompts_dir / "speckit.ext-alias-copilot.shortcut.prompt.md").exists()

    def test_non_copilot_agent_no_companion_file(self, extension_dir, project_dir):
        """Test that non-copilot agents do NOT create .prompt.md files."""
        claude_dir = project_dir / ".claude" / "skills"
        claude_dir.mkdir(parents=True)

        manifest = ExtensionManifest(extension_dir / "extension.yml")

        registrar = CommandRegistrar()
        registrar.register_commands_for_agent(
            "claude", manifest, extension_dir, project_dir
        )

        # No .github/prompts directory should exist
        prompts_dir = project_dir / ".github" / "prompts"
        assert not prompts_dir.exists()

    def test_unregister_skill_removes_parent_directory(self, project_dir, temp_dir):
        """Unregistering a SKILL.md command should remove the empty parent subdirectory."""
        import yaml

        ext_dir = temp_dir / "cleanup-ext"
        ext_dir.mkdir()
        (ext_dir / "commands").mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "cleanup-ext",
                "name": "Cleanup Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.cleanup-ext.run",
                        "file": "commands/run.md",
                        "description": "Run",
                    }
                ]
            },
        }
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(manifest_data, f)
        (ext_dir / "commands" / "run.md").write_text("---\ndescription: Run\n---\n\nBody")

        skills_dir = project_dir / ".agents" / "skills"
        skills_dir.mkdir(parents=True)

        registrar = CommandRegistrar()
        from specify_cli.extensions import ExtensionManifest
        manifest = ExtensionManifest(ext_dir / "extension.yml")
        registrar.register_commands_for_agent("codex", manifest, ext_dir, project_dir)

        skill_subdir = skills_dir / "speckit-cleanup-ext-run"
        assert skill_subdir.exists(), "Skill subdirectory should exist after registration"
        assert (skill_subdir / "SKILL.md").exists()

        registrar.unregister_commands({"codex": ["speckit.cleanup-ext.run"]}, project_dir)

        assert not (skill_subdir / "SKILL.md").exists(), "SKILL.md should be removed"
        assert not skill_subdir.exists(), "Empty parent subdirectory should be removed"


# ===== Utility Function Tests =====

class TestVersionSatisfies:
    """Test version_satisfies utility function."""

    def test_version_satisfies_simple(self):
        """Test simple version comparison."""
        assert version_satisfies("1.0.0", ">=1.0.0")
        assert version_satisfies("1.0.1", ">=1.0.0")
        assert not version_satisfies("0.9.9", ">=1.0.0")

    def test_version_satisfies_range(self):
        """Test version range."""
        assert version_satisfies("1.5.0", ">=1.0.0,<2.0.0")
        assert not version_satisfies("2.0.0", ">=1.0.0,<2.0.0")
        assert not version_satisfies("0.9.0", ">=1.0.0,<2.0.0")

    def test_version_satisfies_complex(self):
        """Test complex version specifier."""
        assert version_satisfies("1.0.5", ">=1.0.0,!=1.0.3")
        assert not version_satisfies("1.0.3", ">=1.0.0,!=1.0.3")

    def test_version_satisfies_invalid(self):
        """Test invalid version strings."""
        assert not version_satisfies("invalid", ">=1.0.0")
        assert not version_satisfies("1.0.0", "invalid specifier")


# ===== Integration Tests =====

class TestIntegration:
    """Integration tests for complete workflows."""

    def test_full_install_and_remove_workflow(self, extension_dir, project_dir):
        """Test complete installation and removal workflow."""
        # Create Claude directory
        (project_dir / ".claude" / "skills").mkdir(parents=True)

        manager = ExtensionManager(project_dir)

        # Install
        manager.install_from_directory(
            extension_dir,
            "0.1.0",
            register_commands=True
        )

        # Verify installation
        assert manager.registry.is_installed("test-ext")
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["id"] == "test-ext"

        # Verify command registered
        cmd_file = project_dir / ".claude" / "skills" / "speckit-test-ext-hello" / "SKILL.md"
        assert cmd_file.exists()

        # Verify registry has registered commands (now a dict keyed by agent)
        metadata = manager.registry.get("test-ext")
        registered_commands = metadata["registered_commands"]
        # Check that the command is registered for at least one agent
        assert any(
            "speckit.test-ext.hello" in cmds
            for cmds in registered_commands.values()
        )

        # Remove
        result = manager.remove("test-ext")
        assert result is True

        # Verify removal
        assert not manager.registry.is_installed("test-ext")
        assert not cmd_file.exists()
        assert len(manager.list_installed()) == 0

    def test_copilot_cleanup_removes_prompt_files(self, extension_dir, project_dir):
        """Test that removing a Copilot extension also removes .prompt.md files."""
        agents_dir = project_dir / ".github" / "agents"
        agents_dir.mkdir(parents=True)

        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=True)

        # Verify copilot was detected and registered
        metadata = manager.registry.get("test-ext")
        assert "copilot" in metadata["registered_commands"]

        # Verify files exist before cleanup
        agent_file = agents_dir / "speckit.test-ext.hello.agent.md"
        prompt_file = project_dir / ".github" / "prompts" / "speckit.test-ext.hello.prompt.md"
        assert agent_file.exists()
        assert prompt_file.exists()

        # Use the extension manager to remove — exercises the copilot prompt cleanup code
        result = manager.remove("test-ext")
        assert result is True

        assert not agent_file.exists()
        assert not prompt_file.exists()

    def test_multiple_extensions(self, temp_dir, project_dir):
        """Test installing multiple extensions."""
        import yaml

        # Create two extensions
        for i in range(1, 3):
            ext_dir = temp_dir / f"ext{i}"
            ext_dir.mkdir()

            manifest_data = {
                "schema_version": "1.0",
                "extension": {
                    "id": f"ext{i}",
                    "name": f"Extension {i}",
                    "version": "1.0.0",
                    "description": f"Extension {i}",
                },
                "requires": {"speckit_version": ">=0.1.0"},
                "provides": {
                    "commands": [
                        {
                            "name": f"speckit.ext{i}.cmd",
                            "file": "commands/cmd.md",
                        }
                    ]
                },
            }

            with open(ext_dir / "extension.yml", 'w') as f:
                yaml.dump(manifest_data, f)

            (ext_dir / "commands").mkdir()
            (ext_dir / "commands" / "cmd.md").write_text("---\ndescription: Test\n---\nTest")

        manager = ExtensionManager(project_dir)

        # Install both
        manager.install_from_directory(temp_dir / "ext1", "0.1.0", register_commands=False)
        manager.install_from_directory(temp_dir / "ext2", "0.1.0", register_commands=False)

        # Verify both installed
        installed = manager.list_installed()
        assert len(installed) == 2
        assert {ext["id"] for ext in installed} == {"ext1", "ext2"}

        # Remove first
        manager.remove("ext1")

        # Verify only second remains
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["id"] == "ext2"


# ===== Extension Catalog Tests =====


class TestExtensionCatalog:
    """Test extension catalog functionality."""

    def test_catalog_initialization(self, temp_dir):
        """Test catalog initialization."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        assert catalog.project_root == project_dir
        assert catalog.cache_dir == project_dir / ".specify" / "extensions" / ".cache"

    def test_cache_directory_creation(self, temp_dir):
        """Test catalog cache directory is created when fetching."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog data
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "test-ext": {
                    "name": "Test Extension",
                    "id": "test-ext",
                    "version": "1.0.0",
                    "description": "Test",
                }
            },
        }

        # Manually save to cache to test cache reading
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com/catalog.json",
                }
            )
        )

        # Should use cache
        result = catalog.fetch_catalog()
        assert result == catalog_data

    def test_cache_expiration(self, temp_dir):
        """Test that expired cache is not used."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        # Create expired cache
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog_data = {"schema_version": "1.0", "extensions": {}}
        catalog.cache_file.write_text(json.dumps(catalog_data))

        # Set cache time to 2 hours ago (expired)
        expired_time = datetime.now(timezone.utc).timestamp() - 7200
        expired_datetime = datetime.fromtimestamp(expired_time, tz=timezone.utc)
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": expired_datetime.isoformat(),
                    "catalog_url": "http://test.com/catalog.json",
                }
            )
        )

        # Cache should be invalid
        assert not catalog.is_cache_valid()

    def test_search_all_extensions(self, temp_dir):
        """Test searching all extensions without filters."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                    "author": "Stats Perform",
                    "tags": ["issue-tracking", "jira"],
                    "verified": True,
                },
                "linear": {
                    "name": "Linear Integration",
                    "id": "linear",
                    "version": "0.9.0",
                    "description": "Linear integration",
                    "author": "Community",
                    "tags": ["issue-tracking"],
                    "verified": False,
                },
            },
        }

        # Save to cache
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search without filters
        results = catalog.search()
        assert len(results) == 2

    def test_search_by_query(self, temp_dir):
        """Test searching by query text."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira issue tracking",
                    "tags": ["jira"],
                },
                "linear": {
                    "name": "Linear Integration",
                    "id": "linear",
                    "version": "1.0.0",
                    "description": "Linear project management",
                    "tags": ["linear"],
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search for "jira"
        results = catalog.search(query="jira")
        assert len(results) == 1
        assert results[0]["id"] == "jira"

    def test_search_by_tag(self, temp_dir):
        """Test searching by tag."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira",
                    "tags": ["issue-tracking", "jira"],
                },
                "linear": {
                    "name": "Linear",
                    "id": "linear",
                    "version": "1.0.0",
                    "description": "Linear",
                    "tags": ["issue-tracking", "linear"],
                },
                "github": {
                    "name": "GitHub",
                    "id": "github",
                    "version": "1.0.0",
                    "description": "GitHub",
                    "tags": ["vcs", "github"],
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search by tag "issue-tracking"
        results = catalog.search(tag="issue-tracking")
        assert len(results) == 2
        assert {r["id"] for r in results} == {"jira", "linear"}

    def test_search_verified_only(self, temp_dir):
        """Test searching verified extensions only."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira",
                    "verified": True,
                },
                "linear": {
                    "name": "Linear",
                    "id": "linear",
                    "version": "1.0.0",
                    "description": "Linear",
                    "verified": False,
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Search verified only
        results = catalog.search(verified_only=True)
        assert len(results) == 1
        assert results[0]["id"] == "jira"

    def test_get_extension_info(self, temp_dir):
        """Test getting specific extension info."""
        import yaml as yaml_module

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        # Use a single-catalog config so community extensions don't interfere
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "test-catalog",
                            "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                            "priority": 1,
                            "install_allowed": True,
                        }
                    ]
                },
                f,
            )

        catalog = ExtensionCatalog(project_dir)

        # Create mock catalog
        catalog_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                    "author": "Stats Perform",
                },
            },
        }

        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": "http://test.com",
                }
            )
        )

        # Get extension info
        info = catalog.get_extension_info("jira")
        assert info is not None
        assert info["id"] == "jira"
        assert info["name"] == "Jira Integration"

        # Non-existent extension
        info = catalog.get_extension_info("nonexistent")
        assert info is None

    def test_clear_cache(self, temp_dir):
        """Test clearing catalog cache."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        # Create cache
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text("{}")
        catalog.cache_metadata_file.write_text("{}")

        assert catalog.cache_file.exists()
        assert catalog.cache_metadata_file.exists()

        # Clear cache
        catalog.clear_cache()

        assert not catalog.cache_file.exists()
        assert not catalog.cache_metadata_file.exists()

    # --- _make_request / GitHub auth ---

    def _make_catalog(self, temp_dir):
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        return ExtensionCatalog(project_dir)

    def _inject_github_config(self, monkeypatch, token_env="GH_TOKEN"):
        from tests.auth_helpers import inject_github_config
        inject_github_config(monkeypatch, token_env)

    def test_make_request_no_token_no_auth_header(self, temp_dir, monkeypatch):
        """Without a token, requests carry no Authorization header."""
        monkeypatch.delenv("GITHUB_TOKEN", raising=False)
        monkeypatch.delenv("GH_TOKEN", raising=False)
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://raw.githubusercontent.com/org/repo/main/catalog.json")
        assert "Authorization" not in req.headers

    def test_make_request_whitespace_only_github_token_ignored(self, temp_dir, monkeypatch):
        """A whitespace-only GITHUB_TOKEN is treated as unset."""
        monkeypatch.setenv("GITHUB_TOKEN", "   ")
        monkeypatch.delenv("GH_TOKEN", raising=False)
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://raw.githubusercontent.com/org/repo/main/catalog.json")
        assert "Authorization" not in req.headers

    def test_make_request_whitespace_github_token_falls_back_to_gh_token(self, temp_dir, monkeypatch):
        """When GITHUB_TOKEN is whitespace-only, GH_TOKEN is used as fallback."""
        monkeypatch.setenv("GITHUB_TOKEN", "   ")
        monkeypatch.setenv("GH_TOKEN", "ghp_fallback")
        self._inject_github_config(monkeypatch, token_env="GH_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://raw.githubusercontent.com/org/repo/main/catalog.json")
        assert req.get_header("Authorization") == "Bearer ghp_fallback"

    def test_make_request_github_token_added_for_raw_githubusercontent(self, temp_dir, monkeypatch):
        """GITHUB_TOKEN is attached for raw.githubusercontent.com URLs."""
        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        monkeypatch.delenv("GH_TOKEN", raising=False)
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://raw.githubusercontent.com/org/repo/main/catalog.json")
        assert req.get_header("Authorization") == "Bearer ghp_testtoken"

    def test_make_request_gh_token_fallback(self, temp_dir, monkeypatch):
        """GH_TOKEN is used when GITHUB_TOKEN is absent."""
        monkeypatch.delenv("GITHUB_TOKEN", raising=False)
        monkeypatch.setenv("GH_TOKEN", "ghp_ghtoken")
        self._inject_github_config(monkeypatch, token_env="GH_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://github.com/org/repo/releases/download/v1/ext.zip")
        assert req.get_header("Authorization") == "Bearer ghp_ghtoken"

    def test_make_request_gh_token_takes_precedence_over_github_token(self, temp_dir, monkeypatch):
        """When auth.json uses GH_TOKEN, that token is used regardless of GITHUB_TOKEN."""
        monkeypatch.setenv("GITHUB_TOKEN", "ghp_secondary")
        monkeypatch.setenv("GH_TOKEN", "ghp_primary")
        self._inject_github_config(monkeypatch, token_env="GH_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://api.github.com/repos/org/repo")
        assert req.get_header("Authorization") == "Bearer ghp_primary"

    def test_make_request_no_auth_for_non_matching_host(self, temp_dir, monkeypatch):
        """Auth is NOT attached to hosts not listed in auth.json."""
        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://internal.example.com/catalog.json")
        assert "Authorization" not in req.headers

    def test_make_request_no_auth_when_no_config(self, temp_dir, monkeypatch):
        """No auth header when no auth.json config exists."""
        monkeypatch.delenv("GITHUB_TOKEN", raising=False)
        monkeypatch.delenv("GH_TOKEN", raising=False)
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://github.com/org/repo/releases/download/v1/ext.zip")
        assert "Authorization" not in req.headers

    def test_make_request_token_added_for_api_github_com(self, temp_dir, monkeypatch):
        """GITHUB_TOKEN is attached for api.github.com URLs."""
        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://api.github.com/repos/org/repo/releases/assets/1")
        assert req.get_header("Authorization") == "Bearer ghp_testtoken"

    def test_make_request_token_added_for_codeload_github_com(self, temp_dir, monkeypatch):
        """GITHUB_TOKEN is attached for codeload.github.com URLs (GitHub archive redirects)."""
        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)
        req = catalog._make_request("https://codeload.github.com/org/repo/zip/refs/tags/v1.0.0")
        assert req.get_header("Authorization") == "Bearer ghp_testtoken"

    def test_fetch_single_catalog_sends_auth_header(self, temp_dir, monkeypatch):
        """_fetch_single_catalog passes Authorization header when a provider is configured."""
        from unittest.mock import patch, MagicMock

        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)

        catalog_data = {"schema_version": "1.0", "extensions": {}}
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(catalog_data).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)
        mock_response.geturl.return_value = "https://raw.githubusercontent.com/org/repo/main/catalog.json"

        captured = {}
        mock_opener = MagicMock()

        def fake_open(req, timeout=None):
            captured["req"] = req
            return mock_response

        mock_opener.open.side_effect = fake_open

        entry = CatalogEntry(
            url="https://raw.githubusercontent.com/org/repo/main/catalog.json",
            name="private",
            priority=1,
            install_allowed=True,
        )

        with patch("specify_cli.authentication.http.urllib.request.build_opener", return_value=mock_opener):
            catalog._fetch_single_catalog(entry, force_refresh=True)

        assert captured["req"].get_header("Authorization") == "Bearer ghp_testtoken"

    @pytest.mark.parametrize(
        "payload",
        [
            # Root is not a JSON object.
            [],
            "oops",
            42,
            None,
            # Root is fine but ``extensions`` is the wrong type.
            {"schema_version": "1.0", "extensions": []},
            {"schema_version": "1.0", "extensions": "oops"},
            {"schema_version": "1.0", "extensions": None},
            {"schema_version": "1.0", "extensions": 42},
        ],
    )
    def test_fetch_single_catalog_rejects_malformed_payload(self, temp_dir, payload):
        """Malformed catalog payloads raise ExtensionError, not AttributeError.

        Without this guard, a payload like ``{"extensions": []}`` would pass the
        key-presence check and then crash with ``AttributeError: 'list' object
        has no attribute 'items'`` deep inside ``_get_merged_extensions``. The
        sibling integration catalog reader already validates both the root
        object and the nested mapping (see ``integrations/catalog.py``); the
        extension catalog must stay consistent.
        """
        from unittest.mock import patch, MagicMock

        catalog = self._make_catalog(temp_dir)

        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(payload).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        entry = CatalogEntry(
            url="https://example.com/catalog.json",
            name="default",
            priority=1,
            install_allowed=True,
        )

        with patch.object(catalog, "_open_url", return_value=mock_response):
            with pytest.raises(ExtensionError, match="Invalid catalog format"):
                catalog._fetch_single_catalog(entry, force_refresh=True)

    @pytest.mark.parametrize(
        "cached_payload",
        [
            [],
            "oops",
            42,
            None,
            {"schema_version": "1.0", "extensions": []},
            {"schema_version": "1.0", "extensions": "oops"},
            {"schema_version": "1.0", "extensions": None},
        ],
    )
    def test_fetch_single_catalog_rejects_malformed_cached_payload(
        self, temp_dir, cached_payload
    ):
        """A poisoned cache silently falls back to the network instead of
        crashing — cached payloads pass through the same shape validation
        as freshly-fetched ones.

        Without this, a cache poisoned by an older spec-kit version (or a
        manual edit, or an upstream that briefly served a bad payload
        before the network guards landed) would re-crash every invocation
        of ``_get_merged_extensions`` despite the cache being "valid" by
        age. The recovery contract is: if the cached payload fails
        validation, drop it and refetch — never propagate
        ``AttributeError`` to the caller.
        """
        from unittest.mock import patch, MagicMock

        catalog = self._make_catalog(temp_dir)

        # Poison the default-URL cache. ``DEFAULT_CATALOG_URL`` is the
        # branch that goes through ``is_cache_valid()`` (the non-default
        # branch uses per-URL hashed cache files but the same code path
        # below).
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(cached_payload))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                }
            )
        )

        # Network refetch returns a valid payload so the recovery path
        # can complete.
        valid = {
            "schema_version": "1.0",
            "extensions": {"foo": {"name": "Foo", "version": "1.0.0"}},
        }
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(valid).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        entry = CatalogEntry(
            url=ExtensionCatalog.DEFAULT_CATALOG_URL,
            name="default",
            priority=1,
            install_allowed=True,
        )

        with patch.object(catalog, "_open_url", return_value=mock_response):
            result = catalog._fetch_single_catalog(entry, force_refresh=False)

        # The poisoned cache was discarded and the network payload returned.
        assert result == valid

    @pytest.mark.parametrize(
        "payload",
        [
            # Root is not a JSON object.
            [],
            "oops",
            42,
            None,
            # Root is fine but ``extensions`` is the wrong type.
            {"schema_version": "1.0", "extensions": []},
            {"schema_version": "1.0", "extensions": "oops"},
            {"schema_version": "1.0", "extensions": None},
        ],
    )
    def test_fetch_catalog_rejects_malformed_payload(self, temp_dir, payload):
        """Legacy ``fetch_catalog`` reuses the same shape-validation helper.

        Before this change ``fetch_catalog`` only checked key presence — so
        a payload like ``42`` would crash with
        ``TypeError: argument of type 'int' is not iterable`` during the
        ``"schema_version" in catalog_data`` check, and an entry mapping
        of the wrong type would crash downstream. Reusing
        ``_validate_catalog_payload`` keeps the network-side behaviour of
        the legacy single-catalog method consistent with the multi-catalog
        ``_fetch_single_catalog`` path.
        """
        from unittest.mock import patch, MagicMock

        catalog = self._make_catalog(temp_dir)
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(payload).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        with patch.object(catalog, "_open_url", return_value=mock_response):
            with pytest.raises(ExtensionError, match="Invalid catalog format"):
                catalog.fetch_catalog(force_refresh=True)

    def test_fetch_catalog_recovers_from_unreadable_cache(self, temp_dir):
        """An unreadable / wrong-encoded cache file silently refetches.

        The cache contract is best-effort: a JSON-decode failure, an OS
        read failure (permissions / disk / handle limit), or an invalid
        text encoding on a cache file written by an older client must
        all fall through to the network fetch rather than crash the
        caller. Covers Copilot's review point that the previous
        ``except (json.JSONDecodeError,)`` was too narrow.
        """
        from unittest.mock import patch, MagicMock

        catalog = self._make_catalog(temp_dir)
        # Write invalid UTF-8 bytes to the cache file so ``read_text``
        # raises ``UnicodeDecodeError`` (a subclass of ``UnicodeError``).
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_bytes(b"\xff\xfe\x00not-utf-8")
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                }
            ),
            encoding="utf-8",
        )

        valid = {
            "schema_version": "1.0",
            "extensions": {"foo": {"name": "Foo", "version": "1.0.0"}},
        }
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(valid).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        with patch.object(catalog, "_open_url", return_value=mock_response):
            result = catalog.fetch_catalog(force_refresh=False)

        # Recovered via network rather than crashing on the unreadable cache.
        assert result == valid

    def test_fetch_catalog_recovers_from_unreadable_metadata(self, temp_dir):
        """A wrongly-encoded metadata file degrades to a cache miss.

        ``is_cache_valid`` is consulted *before* the cache payload is
        read; if the metadata file itself can't be decoded (e.g. it was
        written on a Windows host whose default codec isn't UTF-8) the
        validity check must return ``False`` rather than propagate
        ``UnicodeDecodeError``. Without that guard, a corrupted metadata
        file would crash every invocation instead of falling through to
        a network refetch.
        """
        from unittest.mock import patch, MagicMock

        catalog = self._make_catalog(temp_dir)
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text("{}", encoding="utf-8")
        # Bytes that are not valid UTF-8 — ``read_text(encoding="utf-8")``
        # will raise ``UnicodeDecodeError`` (subclass of ``UnicodeError``).
        catalog.cache_metadata_file.write_bytes(b"\xff\xfe\x00bad")

        # is_cache_valid must absorb the decode failure, not crash.
        assert catalog.is_cache_valid() is False

        valid = {
            "schema_version": "1.0",
            "extensions": {"foo": {"name": "Foo", "version": "1.0.0"}},
        }
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(valid).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        with patch.object(catalog, "_open_url", return_value=mock_response):
            result = catalog.fetch_catalog(force_refresh=False)

        assert result == valid

    @pytest.mark.parametrize(
        "non_mapping_metadata",
        [
            "[]",       # JSON array
            '"oops"',   # JSON string
            "42",       # JSON number
            "true",     # JSON bool
            "null",     # JSON null
        ],
    )
    def test_is_cache_valid_handles_non_mapping_metadata(
        self, temp_dir, non_mapping_metadata
    ):
        """Metadata that parses to a non-mapping degrades to cache-invalid.

        The cache-validity check calls ``metadata.get("cached_at", "")``
        immediately after ``json.loads``. If the metadata file is valid
        JSON but parses to a non-mapping (``[]``, ``"oops"``, ``42``,
        ``true``, ``null``), ``.get`` raises ``AttributeError`` — which
        previously slipped past the except tuple and crashed the
        caller. The contract documented on ``is_cache_valid`` says any
        decode/shape failure should return ``False`` so ``fetch_catalog``
        falls through to a network refetch. This test pins that
        contract across every JSON non-mapping root type so a regression
        in the except clause can't silently re-introduce the crash.
        """
        catalog = self._make_catalog(temp_dir)
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text("{}", encoding="utf-8")
        catalog.cache_metadata_file.write_text(
            non_mapping_metadata, encoding="utf-8"
        )

        # Must not raise — the contract is "any decode/shape failure → False".
        assert catalog.is_cache_valid() is False

    def test_fetch_catalog_writes_cache_as_utf8(self, temp_dir, monkeypatch):
        """Cache + metadata writes pass ``encoding="utf-8"``, observably.

        The earlier version of this test claimed to assert UTF-8 at the
        byte level but actually only round-tripped a non-ASCII string
        through ``json.dumps`` and ``read_text(encoding="utf-8")``.
        Because ``json.dumps`` defaults to ``ensure_ascii=True``, "café"
        was serialized as the all-ASCII escape ``caf\\u00e9`` before it
        ever reached ``write_text`` — the bytes on disk were identical
        regardless of the encoding kwarg, so a locale-encoded write
        would have round-tripped just fine. The drift Copilot's review
        flagged wasn't actually being caught.

        Fix: directly observe the ``encoding`` argument passed to every
        ``write_text`` call made against the cache directory. This is
        the production code's encoding choice, which is exactly what
        the regression guard cares about; non-ASCII payload tricks are
        unnecessary because the assertion is about the kwarg, not the
        bytes.
        """
        from unittest.mock import patch, MagicMock
        from pathlib import Path as _PathCls

        catalog = self._make_catalog(temp_dir)
        payload = {
            "schema_version": "1.0",
            "extensions": {"foo": {"name": "Foo", "version": "1.0.0"}},
        }
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(payload).encode("utf-8")
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        # Record every ``write_text`` call's encoding kwarg so the
        # assertion observes the production writer's argument directly.
        recorded: list[dict] = []
        real_write_text = _PathCls.write_text

        def recording_write_text(self, data, *args, **kwargs):
            recorded.append(
                {"path": str(self), "encoding": kwargs.get("encoding")}
            )
            return real_write_text(self, data, *args, **kwargs)

        monkeypatch.setattr(_PathCls, "write_text", recording_write_text)

        with patch.object(catalog, "_open_url", return_value=mock_response):
            catalog.fetch_catalog(force_refresh=True)

        # Filter to writes inside the catalog's cache directory so
        # unrelated writes from other machinery don't pollute the
        # assertion.
        cache_writes = [
            r for r in recorded if str(catalog.cache_dir) in r["path"]
        ]
        assert cache_writes, "fetch_catalog made no writes to the cache dir"
        for record in cache_writes:
            assert record["encoding"] == "utf-8", (
                f"write_text on {record['path']} used encoding "
                f"{record['encoding']!r}; expected 'utf-8'"
            )

    def test_fetch_catalog_survives_unwritable_cache(self, temp_dir, monkeypatch):
        """An unwritable cache dir doesn't fail a successful fetch.

        Cache writes are best-effort, mirroring the read side and the
        ``integrations/catalog.py`` precedent: if ``mkdir``/``write_text``
        raises ``OSError`` (read-only checkout, permissions), the
        already-fetched-and-validated payload must still be returned
        rather than surfacing the cache failure to the caller.
        """
        from unittest.mock import patch, MagicMock
        from pathlib import Path as _PathCls

        catalog = self._make_catalog(temp_dir)
        valid = {
            "schema_version": "1.0",
            "extensions": {"foo": {"name": "Foo", "version": "1.0.0"}},
        }
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(valid).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        # Simulate an unwritable cache dir: every write_text under the
        # cache directory raises PermissionError (an OSError subclass).
        real_write_text = _PathCls.write_text

        def failing_write_text(self, data, *args, **kwargs):
            if str(catalog.cache_dir) in str(self):
                raise PermissionError("cache dir is read-only")
            return real_write_text(self, data, *args, **kwargs)

        monkeypatch.setattr(_PathCls, "write_text", failing_write_text)

        with patch.object(catalog, "_open_url", return_value=mock_response):
            # Legacy single-catalog path.
            assert catalog.fetch_catalog(force_refresh=True) == valid

            # Multi-catalog path.
            entry = CatalogEntry(
                url="https://example.com/catalog.json",
                name="default",
                priority=1,
                install_allowed=True,
            )
            assert catalog._fetch_single_catalog(entry, force_refresh=True) == valid

    def test_get_merged_extensions_skips_non_mapping_entries(self, temp_dir):
        """Per-entry guard: one malformed entry shouldn't poison the merge.

        ``_fetch_single_catalog`` validates that ``extensions`` is a mapping,
        but it doesn't (and shouldn't) validate every entry inside it — a
        single bad entry in an otherwise-valid catalog should be skipped, not
        crash the whole resolve path. Mirrors the per-entry skip in
        ``integrations/catalog.py``: a malformed entry returns no error,
        valid entries continue to merge normally.
        """
        from unittest.mock import patch, MagicMock

        catalog = self._make_catalog(temp_dir)
        # Mix of valid entry, list-shaped entry, and string-shaped entry.
        payload = {
            "schema_version": "1.0",
            "extensions": {
                "good": {"name": "Good", "version": "1.0.0"},
                "bad-list": [],
                "bad-str": "oops",
            },
        }
        mock_response = MagicMock()
        mock_response.read.return_value = json.dumps(payload).encode()
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        entry = CatalogEntry(
            url="https://example.com/catalog.json",
            name="default",
            priority=1,
            install_allowed=True,
        )

        with patch.object(catalog, "_open_url", return_value=mock_response), \
             patch.object(catalog, "get_active_catalogs", return_value=[entry]):
            merged = catalog._get_merged_extensions(force_refresh=True)

        # Only the well-formed entry survives; the two malformed entries are
        # silently dropped rather than raising or crashing.
        assert [ext["id"] for ext in merged] == ["good"]

    def test_download_extension_sends_auth_header(self, temp_dir, monkeypatch):
        """download_extension passes Authorization header when a provider is configured."""
        from unittest.mock import patch, MagicMock
        import zipfile
        import io

        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)

        # Build a minimal valid ZIP in memory
        zip_buf = io.BytesIO()
        with zipfile.ZipFile(zip_buf, "w") as zf:
            zf.writestr("extension.yml", "id: test-ext\nname: Test\nversion: 1.0.0\n")
        zip_bytes = zip_buf.getvalue()

        release_response = MagicMock()
        release_response.read.return_value = json.dumps(
            {
                "assets": [
                    {
                        "name": "test-ext.zip",
                        "url": "https://api.github.com/repos/org/repo/releases/assets/1",
                    }
                ]
            }
        ).encode()
        release_response.__enter__ = lambda s: s
        release_response.__exit__ = MagicMock(return_value=False)

        asset_response = MagicMock()
        asset_response.read.return_value = zip_bytes
        asset_response.__enter__ = lambda s: s
        asset_response.__exit__ = MagicMock(return_value=False)

        captured = []
        mock_opener = MagicMock()

        def fake_open(req, timeout=None):
            captured.append(req)
            if req.full_url.endswith("/releases/tags/v1"):
                return release_response
            return asset_response

        mock_opener.open.side_effect = fake_open

        ext_info = {
            "id": "test-ext",
            "name": "Test Extension",
            "version": "1.0.0",
            "download_url": "https://github.com/org/repo/releases/download/v1/test-ext.zip",
        }

        with patch.object(catalog, "get_extension_info", return_value=ext_info), \
             patch("specify_cli.authentication.http.urllib.request.build_opener", return_value=mock_opener):
            catalog.download_extension("test-ext", target_dir=temp_dir)

        assert captured[0].full_url == "https://api.github.com/repos/org/repo/releases/tags/v1"
        assert captured[0].get_header("Authorization") == "Bearer ghp_testtoken"
        assert captured[1].full_url == "https://api.github.com/repos/org/repo/releases/assets/1"
        assert captured[1].get_header("Authorization") == "Bearer ghp_testtoken"
        assert captured[1].get_header("Accept") == "application/octet-stream"

    def test_download_extension_accepts_direct_github_rest_asset_url(self, temp_dir, monkeypatch):
        """download_extension can use a GitHub REST release asset URL directly."""
        from unittest.mock import patch, MagicMock
        import zipfile
        import io

        monkeypatch.setenv("GITHUB_TOKEN", "ghp_testtoken")
        self._inject_github_config(monkeypatch, token_env="GITHUB_TOKEN")
        catalog = self._make_catalog(temp_dir)

        zip_buf = io.BytesIO()
        with zipfile.ZipFile(zip_buf, "w") as zf:
            zf.writestr("extension.yml", "id: test-ext\nname: Test\nversion: 1.0.0\n")
        zip_bytes = zip_buf.getvalue()

        asset_response = MagicMock()
        asset_response.read.return_value = zip_bytes
        asset_response.__enter__ = lambda s: s
        asset_response.__exit__ = MagicMock(return_value=False)

        captured = []
        mock_opener = MagicMock()

        def fake_open(req, timeout=None):
            captured.append(req)
            return asset_response

        mock_opener.open.side_effect = fake_open

        ext_info = {
            "id": "test-ext",
            "name": "Test Extension",
            "version": "1.0.0",
            "download_url": "https://api.github.com/repos/org/repo/releases/assets/1",
        }

        with patch.object(catalog, "get_extension_info", return_value=ext_info), \
             patch("specify_cli.authentication.http.urllib.request.build_opener", return_value=mock_opener):
            catalog.download_extension("test-ext", target_dir=temp_dir)

        assert len(captured) == 1
        assert captured[0].full_url == "https://api.github.com/repos/org/repo/releases/assets/1"
        assert captured[0].get_header("Authorization") == "Bearer ghp_testtoken"
        assert captured[0].get_header("Accept") == "application/octet-stream"



# ===== CatalogEntry Tests =====

class TestCatalogEntry:
    """Test CatalogEntry dataclass."""

    def test_catalog_entry_creation(self):
        """Test creating a CatalogEntry."""
        entry = CatalogEntry(
            url="https://example.com/catalog.json",
            name="test",
            priority=1,
            install_allowed=True,
        )
        assert entry.url == "https://example.com/catalog.json"
        assert entry.name == "test"
        assert entry.priority == 1
        assert entry.install_allowed is True


# ===== Catalog Stack Tests =====

class TestCatalogStack:
    """Test multi-catalog stack support."""

    def _make_project(self, temp_dir: Path) -> Path:
        """Create a minimal spec-kit project directory."""
        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        return project_dir

    def _write_catalog_config(self, project_dir: Path, catalogs: list) -> None:
        """Write extension-catalogs.yml to project .specify dir."""
        import yaml as yaml_module

        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump({"catalogs": catalogs}, f)

    def _write_valid_cache(
        self, catalog: ExtensionCatalog, extensions: dict, url: str = "http://test.com"
    ) -> None:
        """Populate the primary cache file with mock extension data."""
        catalog_data = {"schema_version": "1.0", "extensions": extensions}
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(catalog_data))
        catalog.cache_metadata_file.write_text(
            json.dumps(
                {
                    "cached_at": datetime.now(timezone.utc).isoformat(),
                    "catalog_url": url,
                }
            )
        )

    # --- get_active_catalogs ---

    def test_default_stack(self, temp_dir):
        """Default stack includes default and community catalogs."""
        project_dir = self._make_project(temp_dir)
        catalog = ExtensionCatalog(project_dir)

        entries = catalog.get_active_catalogs()

        assert len(entries) == 2
        assert entries[0].url == ExtensionCatalog.DEFAULT_CATALOG_URL
        assert entries[0].name == "default"
        assert entries[0].priority == 1
        assert entries[0].install_allowed is True
        assert entries[1].url == ExtensionCatalog.COMMUNITY_CATALOG_URL
        assert entries[1].name == "community"
        assert entries[1].priority == 2
        assert entries[1].install_allowed is False

    def test_env_var_overrides_default_stack(self, temp_dir, monkeypatch):
        """SPECKIT_CATALOG_URL replaces the entire default stack."""
        project_dir = self._make_project(temp_dir)
        custom_url = "https://example.com/catalog.json"
        monkeypatch.setenv("SPECKIT_CATALOG_URL", custom_url)

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 1
        assert entries[0].url == custom_url
        assert entries[0].install_allowed is True

    def test_env_var_invalid_url_raises(self, temp_dir, monkeypatch):
        """SPECKIT_CATALOG_URL with http:// (non-localhost) raises ValidationError."""
        project_dir = self._make_project(temp_dir)
        monkeypatch.setenv("SPECKIT_CATALOG_URL", "http://example.com/catalog.json")

        catalog = ExtensionCatalog(project_dir)
        with pytest.raises(ValidationError, match="HTTPS"):
            catalog.get_active_catalogs()

    def test_project_config_overrides_defaults(self, temp_dir):
        """Project-level extension-catalogs.yml overrides default stack."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "custom",
                    "url": "https://example.com/catalog.json",
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 1
        assert entries[0].url == "https://example.com/catalog.json"
        assert entries[0].name == "custom"

    def test_project_config_sorted_by_priority(self, temp_dir):
        """Catalog entries are sorted by priority (ascending)."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "secondary",
                    "url": "https://example.com/secondary.json",
                    "priority": 5,
                    "install_allowed": False,
                },
                {
                    "name": "primary",
                    "url": "https://example.com/primary.json",
                    "priority": 1,
                    "install_allowed": True,
                },
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 2
        assert entries[0].name == "primary"
        assert entries[1].name == "secondary"

    def test_project_config_invalid_url_raises(self, temp_dir):
        """Project config with HTTP (non-localhost) URL raises ValidationError."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "bad",
                    "url": "http://example.com/catalog.json",
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        with pytest.raises(ValidationError, match="HTTPS"):
            catalog.get_active_catalogs()

    def test_empty_project_config_raises_error(self, temp_dir):
        """Empty catalogs list in config raises ValidationError (fail-closed for security)."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump({"catalogs": []}, f)

        catalog = ExtensionCatalog(project_dir)

        # Fail-closed: empty config should raise, not fall back to defaults
        with pytest.raises(ValidationError) as exc_info:
            catalog.get_active_catalogs()
        assert "contains no 'catalogs' entries" in str(exc_info.value)

    def test_catalog_entries_without_urls_raises_error(self, temp_dir):
        """Catalog entries without URLs raise ValidationError (fail-closed for security)."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        with open(config_path, "w") as f:
            yaml_module.dump({
                "catalogs": [
                    {"name": "no-url-catalog", "priority": 1},
                    {"name": "another-no-url", "description": "Also missing URL"},
                ]
            }, f)

        catalog = ExtensionCatalog(project_dir)

        # Fail-closed: entries without URLs should raise, not fall back to defaults
        with pytest.raises(ValidationError) as exc_info:
            catalog.get_active_catalogs()
        assert "none have valid URLs" in str(exc_info.value)

    # --- _load_catalog_config ---

    def test_load_catalog_config_missing_file(self, temp_dir):
        """Returns None when config file doesn't exist."""
        project_dir = self._make_project(temp_dir)
        catalog = ExtensionCatalog(project_dir)

        result = catalog._load_catalog_config(project_dir / ".specify" / "nonexistent.yml")
        assert result is None

    def test_load_catalog_config_localhost_allowed(self, temp_dir):
        """Localhost HTTP URLs are allowed in config."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "local",
                    "url": "http://localhost:8000/catalog.json",
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        entries = catalog.get_active_catalogs()

        assert len(entries) == 1
        assert entries[0].url == "http://localhost:8000/catalog.json"

    @pytest.mark.parametrize(
        "config_content", ["[]\n", "false\n", "0\n", "''\n", "- item\n"]
    )
    def test_load_catalog_config_rejects_non_mapping_roots(
        self, temp_dir, config_content
    ):
        """Malformed roots raise ValidationError, not fallback or AttributeError."""
        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        config_path.write_text(config_content, encoding="utf-8")

        catalog = ExtensionCatalog(project_dir)

        with pytest.raises(
            ValidationError, match="expected a YAML mapping at the root"
        ) as exc_info:
            catalog.get_active_catalogs()
        assert str(config_path) in str(exc_info.value)

    def test_load_catalog_config_rejects_boolean_priority(self, temp_dir):
        """Boolean priorities are rejected instead of being coerced to 1 or 0."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        config_path.write_text(
            yaml_module.dump(
                {
                    "catalogs": [
                        {
                            "name": "bad-priority",
                            "url": "https://example.com/catalog.json",
                            "priority": True,
                        }
                    ]
                }
            ),
            encoding="utf-8",
        )

        catalog = ExtensionCatalog(project_dir)

        with pytest.raises(
            ValidationError, match="Invalid priority|expected integer"
        ) as exc_info:
            catalog.get_active_catalogs()
        assert str(config_path) in str(exc_info.value)

    def test_load_catalog_config_defaults_blank_names(self, temp_dir):
        """Blank and null names normalize by valid catalog order."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        config_path.write_text(
            yaml_module.dump(
                {
                    "catalogs": [
                        {"name": "skipped", "url": "   "},
                        {"name": None, "url": "https://one.example.com/catalog.json"},
                        {"name": "   ", "url": "https://two.example.com/catalog.json"},
                    ]
                }
            ),
            encoding="utf-8",
        )

        catalog = ExtensionCatalog(project_dir)

        assert [entry.name for entry in catalog.get_active_catalogs()] == [
            "catalog-1",
            "catalog-2",
        ]

    @pytest.mark.parametrize(
        ("url", "expected_detail"),
        [
            ("relative/catalog.json", "HTTPS"),
            ("https:///no-host", "valid URL with a host"),
        ],
    )
    def test_load_catalog_config_invalid_url_includes_context(
        self, temp_dir, url, expected_detail
    ):
        """Invalid catalog URLs include the config path and entry index."""
        import yaml as yaml_module

        project_dir = self._make_project(temp_dir)
        config_path = project_dir / ".specify" / "extension-catalogs.yml"
        config_path.write_text(
            yaml_module.dump({"catalogs": [{"name": "bad", "url": url}]}),
            encoding="utf-8",
        )

        catalog = ExtensionCatalog(project_dir)

        with pytest.raises(ValidationError) as exc_info:
            catalog.get_active_catalogs()
        message = str(exc_info.value)
        assert "Invalid catalog URL" in message
        assert str(config_path) in message
        assert "index 0" in message
        assert expected_detail in message

    # --- Merge conflict resolution ---

    def test_merge_conflict_higher_priority_wins(self, temp_dir):
        """When same extension id is in two catalogs, higher priority wins."""
        project_dir = self._make_project(temp_dir)

        # Write project config with two catalogs
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "primary",
                    "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                    "priority": 1,
                    "install_allowed": True,
                },
                {
                    "name": "secondary",
                    "url": ExtensionCatalog.COMMUNITY_CATALOG_URL,
                    "priority": 2,
                    "install_allowed": False,
                },
            ],
        )

        catalog = ExtensionCatalog(project_dir)

        # Write primary cache with jira v2.0.0
        primary_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "2.0.0",
                    "description": "Primary Jira",
                }
            },
        }
        catalog.cache_dir.mkdir(parents=True, exist_ok=True)
        catalog.cache_file.write_text(json.dumps(primary_data))
        catalog.cache_metadata_file.write_text(
            json.dumps({"cached_at": datetime.now(timezone.utc).isoformat(), "catalog_url": "http://test.com"})
        )

        # Write secondary cache (URL-hash-based) with jira v1.0.0 (should lose)
        import hashlib

        url_hash = hashlib.sha256(ExtensionCatalog.COMMUNITY_CATALOG_URL.encode()).hexdigest()[:16]
        secondary_cache = catalog.cache_dir / f"catalog-{url_hash}.json"
        secondary_meta = catalog.cache_dir / f"catalog-{url_hash}-metadata.json"
        secondary_data = {
            "schema_version": "1.0",
            "extensions": {
                "jira": {
                    "name": "Jira Integration Community",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Community Jira",
                },
                "linear": {
                    "name": "Linear",
                    "id": "linear",
                    "version": "0.9.0",
                    "description": "Linear from secondary",
                },
            },
        }
        secondary_cache.write_text(json.dumps(secondary_data))
        secondary_meta.write_text(
            json.dumps({"cached_at": datetime.now(timezone.utc).isoformat(), "catalog_url": ExtensionCatalog.COMMUNITY_CATALOG_URL})
        )

        results = catalog.search()
        jira_results = [r for r in results if r["id"] == "jira"]
        assert len(jira_results) == 1
        # Primary catalog wins
        assert jira_results[0]["version"] == "2.0.0"
        assert jira_results[0]["_catalog_name"] == "primary"
        assert jira_results[0]["_install_allowed"] is True

        # linear comes from secondary
        linear_results = [r for r in results if r["id"] == "linear"]
        assert len(linear_results) == 1
        assert linear_results[0]["_catalog_name"] == "secondary"
        assert linear_results[0]["_install_allowed"] is False

    def test_install_allowed_false_from_get_extension_info(self, temp_dir):
        """get_extension_info includes _install_allowed from source catalog."""
        project_dir = self._make_project(temp_dir)

        # Single catalog that is install_allowed=False
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "discovery",
                    "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                    "priority": 1,
                    "install_allowed": False,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        self._write_valid_cache(
            catalog,
            {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                }
            },
        )

        info = catalog.get_extension_info("jira")
        assert info is not None
        assert info["_install_allowed"] is False
        assert info["_catalog_name"] == "discovery"

    def test_search_results_include_catalog_metadata(self, temp_dir):
        """Search results include _catalog_name and _install_allowed."""
        project_dir = self._make_project(temp_dir)
        self._write_catalog_config(
            project_dir,
            [
                {
                    "name": "org",
                    "url": ExtensionCatalog.DEFAULT_CATALOG_URL,
                    "priority": 1,
                    "install_allowed": True,
                }
            ],
        )

        catalog = ExtensionCatalog(project_dir)
        self._write_valid_cache(
            catalog,
            {
                "jira": {
                    "name": "Jira Integration",
                    "id": "jira",
                    "version": "1.0.0",
                    "description": "Jira integration",
                }
            },
        )

        results = catalog.search()
        assert len(results) == 1
        assert results[0]["_catalog_name"] == "org"
        assert results[0]["_install_allowed"] is True


class TestExtensionIgnore:
    """Test .extensionignore support during extension installation."""

    def _make_extension(self, temp_dir, valid_manifest_data, extra_files=None, ignore_content=None):
        """Helper to create an extension directory with optional extra files and .extensionignore."""
        import yaml

        ext_dir = temp_dir / "ignored-ext"
        ext_dir.mkdir()

        # Write manifest
        with open(ext_dir / "extension.yml", "w") as f:
            yaml.dump(valid_manifest_data, f)

        # Create commands directory with a command file
        commands_dir = ext_dir / "commands"
        commands_dir.mkdir()
        (commands_dir / "hello.md").write_text(
            "---\ndescription: \"Test hello command\"\n---\n\n# Hello\n\n$ARGUMENTS\n"
        )

        # Create any extra files/dirs
        if extra_files:
            for rel_path, content in extra_files.items():
                p = ext_dir / rel_path
                p.parent.mkdir(parents=True, exist_ok=True)
                if content is None:
                    # Create directory
                    p.mkdir(parents=True, exist_ok=True)
                else:
                    p.write_text(content)

        # Write .extensionignore. Pinned to UTF-8 so non-ASCII patterns
        # in tests (see ``test_extensionignore_utf8_patterns``) survive
        # the round-trip on Windows runners with non-UTF-8 default locales.
        if ignore_content is not None:
            (ext_dir / ".extensionignore").write_text(
                ignore_content, encoding="utf-8"
            )

        return ext_dir

    def test_no_extensionignore(self, temp_dir, valid_manifest_data):
        """Without .extensionignore, all files are copied."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "tests/test_foo.py": "pass"},
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert (dest / "tests" / "test_foo.py").exists()

    def test_extensionignore_excludes_files(self, temp_dir, valid_manifest_data):
        """Files matching .extensionignore patterns are excluded."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "README.md": "# Hello",
                "tests/test_foo.py": "pass",
                "tests/test_bar.py": "pass",
                ".github/workflows/ci.yml": "on: push",
            },
            ignore_content="tests/\n.github/\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Included
        assert (dest / "README.md").exists()
        assert (dest / "extension.yml").exists()
        assert (dest / "commands" / "hello.md").exists()
        # Excluded
        assert not (dest / "tests").exists()
        assert not (dest / ".github").exists()

    def test_extensionignore_glob_patterns(self, temp_dir, valid_manifest_data):
        """Glob patterns like *.pyc are respected."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "README.md": "# Hello",
                "helpers.pyc": b"\x00".decode("latin-1"),
                "commands/cache.pyc": b"\x00".decode("latin-1"),
            },
            ignore_content="*.pyc\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert not (dest / "helpers.pyc").exists()
        assert not (dest / "commands" / "cache.pyc").exists()

    def test_extensionignore_comments_and_blanks(self, temp_dir, valid_manifest_data):
        """Comments and blank lines in .extensionignore are ignored."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "notes.txt": "some notes"},
            ignore_content="# This is a comment\n\nnotes.txt\n\n# Another comment\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert not (dest / "notes.txt").exists()

    def test_extensionignore_itself_excluded(self, temp_dir, valid_manifest_data):
        """.extensionignore is never copied to the destination."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            ignore_content="# nothing special here\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "extension.yml").exists()
        assert not (dest / ".extensionignore").exists()

    def test_extensionignore_relative_path_match(self, temp_dir, valid_manifest_data):
        """Patterns matching relative paths work correctly."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/guide.md": "# Guide",
                "docs/internal/draft.md": "draft",
                "README.md": "# Hello",
            },
            ignore_content="docs/internal/draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "docs" / "guide.md").exists()
        assert not (dest / "docs" / "internal" / "draft.md").exists()

    def test_extensionignore_dotdot_pattern_is_noop(self, temp_dir, valid_manifest_data):
        """Patterns with '..' should not escape the extension root."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello"},
            ignore_content="../sibling/\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Everything should still be copied — the '..' pattern matches nothing inside
        assert (dest / "README.md").exists()
        assert (dest / "extension.yml").exists()
        assert (dest / "commands" / "hello.md").exists()

    def test_extensionignore_absolute_path_pattern_is_noop(self, temp_dir, valid_manifest_data):
        """Absolute path patterns should not match anything."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "passwd": "sensitive"},
            ignore_content="/etc/passwd\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Nothing matches — /etc/passwd is anchored to root and there's no 'etc' dir
        assert (dest / "README.md").exists()
        assert (dest / "passwd").exists()

    def test_extensionignore_empty_file(self, temp_dir, valid_manifest_data):
        """An empty .extensionignore should exclude only itself."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={"README.md": "# Hello", "notes.txt": "notes"},
            ignore_content="",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "README.md").exists()
        assert (dest / "notes.txt").exists()
        assert (dest / "extension.yml").exists()
        # .extensionignore itself is still excluded
        assert not (dest / ".extensionignore").exists()

    def test_extensionignore_windows_backslash_patterns(self, temp_dir, valid_manifest_data):
        """Backslash patterns (Windows-style) are normalised to forward slashes."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/internal/draft.md": "draft",
                "docs/guide.md": "# Guide",
            },
            ignore_content="docs\\internal\\draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert (dest / "docs" / "guide.md").exists()
        assert not (dest / "docs" / "internal" / "draft.md").exists()

    def test_extensionignore_utf8_patterns(self, temp_dir, valid_manifest_data):
        """Non-ASCII patterns in .extensionignore work on every locale.

        ``Path.read_text`` defaults to the system locale codec on Windows
        (cp1252 / gb2312 / cp932). Without an explicit ``encoding="utf-8"``,
        a pattern like ``ドキュメント/`` written by a UTF-8 host becomes
        mojibake on a cp1252 host and silently fails to match — leaking
        files the author intended to exclude. The existing
        ``test_extensionignore_windows_backslash_patterns`` already shows
        the codebase treats this as a Windows-author-friendly file; UTF-8
        is part of that same contract.
        """
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "ドキュメント/private.md": "secret",
                "ドキュメント/public.md": "public",
                "docs/guide.md": "# Guide",
                "café/résumé.txt": "draft",
            },
            ignore_content="ドキュメント/\ncafé/\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # Multibyte patterns excluded.
        assert not (dest / "ドキュメント").exists()
        assert not (dest / "café").exists()
        # ASCII path with no matching pattern is unaffected.
        assert (dest / "docs" / "guide.md").exists()

    def test_extensionignore_invalid_utf8_raises_validation_error(
        self, temp_dir, valid_manifest_data
    ):
        """A non-UTF-8 ``.extensionignore`` surfaces as ``ValidationError``.

        Pinning ``encoding="utf-8"`` on the reader means an
        ``.extensionignore`` written in some other codec (cp1252, etc.)
        now triggers ``UnicodeDecodeError`` instead of silently
        mojibake-ing patterns. Wrap that exception as ``ValidationError``
        with a pointer to the offending byte — the same pattern
        ``ExtensionManifest._load_yaml`` uses for ``extension.yml`` —
        so installation aborts with a user-friendly message instead of a
        raw Python traceback.
        """
        ext_dir = self._make_extension(temp_dir, valid_manifest_data)
        # Write an .extensionignore whose bytes are not valid UTF-8.
        # 0xE9 is 'é' in cp1252 but an invalid lead byte in UTF-8.
        (ext_dir / ".extensionignore").write_bytes(b"caf\xe9/\n")

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        with pytest.raises(
            ValidationError, match=r"\.extensionignore is not valid UTF-8"
        ):
            manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

    def test_extensionignore_star_does_not_cross_directories(self, temp_dir, valid_manifest_data):
        """'*' should NOT match across directory boundaries (gitignore semantics)."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/api.draft.md": "draft",
                "docs/sub/api.draft.md": "nested draft",
            },
            ignore_content="docs/*.draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # docs/*.draft.md should only match directly inside docs/, NOT subdirs
        assert not (dest / "docs" / "api.draft.md").exists()
        assert (dest / "docs" / "sub" / "api.draft.md").exists()

    def test_extensionignore_doublestar_crosses_directories(self, temp_dir, valid_manifest_data):
        """'**' should match across directory boundaries."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/api.draft.md": "draft",
                "docs/sub/api.draft.md": "nested draft",
                "docs/guide.md": "guide",
            },
            ignore_content="docs/**/*.draft.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        assert not (dest / "docs" / "api.draft.md").exists()
        assert not (dest / "docs" / "sub" / "api.draft.md").exists()
        assert (dest / "docs" / "guide.md").exists()

    def test_extensionignore_negation_pattern(self, temp_dir, valid_manifest_data):
        """'!' negation re-includes a previously excluded file."""
        ext_dir = self._make_extension(
            temp_dir,
            valid_manifest_data,
            extra_files={
                "docs/guide.md": "# Guide",
                "docs/internal.md": "internal",
                "docs/api.md": "api",
            },
            ignore_content="docs/*.md\n!docs/api.md\n",
        )

        proj_dir = temp_dir / "project"
        proj_dir.mkdir()
        (proj_dir / ".specify").mkdir()

        manager = ExtensionManager(proj_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)

        dest = proj_dir / ".specify" / "extensions" / "test-ext"
        # docs/*.md excludes all .md in docs, but !docs/api.md re-includes it
        assert not (dest / "docs" / "guide.md").exists()
        assert not (dest / "docs" / "internal.md").exists()
        assert (dest / "docs" / "api.md").exists()


class TestExtensionAddCLI:
    """CLI integration tests for extension add command."""

    def test_add_dev_links_copilot_agent_when_supported(
        self, extension_dir, project_dir, temp_dir
    ):
        """extension add --dev should link generated agent files when possible."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        (project_dir / ".github" / "agents").mkdir(parents=True)

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app,
                ["extension", "add", str(extension_dir), "--dev"],
                catch_exceptions=True,
            )

        assert result.exit_code == 0, result.output

        agent_file = (
            project_dir
            / ".github"
            / "agents"
            / "speckit.test-ext.hello.agent.md"
        )
        assert agent_file.exists()
        if can_create_symlink(temp_dir):
            assert agent_file.is_symlink()
            assert ".specify-dev" in agent_file.resolve().parts
        else:
            assert not agent_file.is_symlink()

    def test_add_dev_falls_back_to_copy_when_windows_symlinks_unavailable(
        self, extension_dir, project_dir, monkeypatch
    ):
        """extension add --dev should work when Windows cannot create symlinks."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        (project_dir / ".github" / "agents").mkdir(parents=True)

        def raise_windows_symlink_error(target, link):
            raise OSError("A required privilege is not held by the client")

        monkeypatch.setattr(
            "specify_cli.agents.os.symlink", raise_windows_symlink_error
        )

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app,
                ["extension", "add", str(extension_dir), "--dev"],
                catch_exceptions=True,
            )

        assert result.exit_code == 0, result.output

        agent_file = (
            project_dir
            / ".github"
            / "agents"
            / "speckit.test-ext.hello.agent.md"
        )
        assert agent_file.exists()
        assert not agent_file.is_symlink()
        assert "Extension: test-ext" in agent_file.read_text(encoding="utf-8")
        assert (
            project_dir
            / ".specify"
            / "extensions"
            / "test-ext"
            / ".specify-dev"
            / "agent-commands"
            / "copilot"
            / "speckit.test-ext.hello.agent.md"
        ).exists()

    def test_add_by_display_name_uses_resolved_id_for_download(self, tmp_path):
        """extension add by display name should use resolved ID for download_extension()."""
        from typer.testing import CliRunner
        from unittest.mock import patch, MagicMock
        from specify_cli import app

        runner = CliRunner()

        # Create project structure
        project_dir = tmp_path / "test-project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".specify" / "extensions").mkdir(parents=True)

        # Mock catalog that returns extension by display name
        mock_catalog = MagicMock()
        mock_catalog.get_extension_info.return_value = None  # ID lookup fails
        mock_catalog.search.return_value = [
            {
                "id": "acme-jira-integration",
                "name": "Jira Integration",
                "version": "1.0.0",
                "description": "Jira integration extension",
                "_install_allowed": True,
            }
        ]

        # Track what ID was passed to download_extension
        download_called_with = []
        def mock_download(extension_id):
            download_called_with.append(extension_id)
            # Return a path that will fail install (we just want to verify the ID)
            raise ExtensionError("Mock download - checking ID was resolved")

        mock_catalog.download_extension.side_effect = mock_download

        with patch("specify_cli.extensions.ExtensionCatalog", return_value=mock_catalog), \
             patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app,
                ["extension", "add", "Jira Integration"],
                catch_exceptions=True,
            )

        assert result.exit_code != 0, (
            f"Expected non-zero exit code since mock download raises, got {result.exit_code}"
        )

        # Verify download_extension was called with the resolved ID, not the display name
        assert len(download_called_with) == 1
        assert download_called_with[0] == "acme-jira-integration", (
            f"Expected download_extension to be called with resolved ID 'acme-jira-integration', "
            f"but was called with '{download_called_with[0]}'"
        )

    def test_add_bundled_extension_not_found_gives_clear_error(self, tmp_path):
        """extension add should give a clear error when a bundled extension is not found locally."""
        from typer.testing import CliRunner
        from unittest.mock import patch, MagicMock
        from specify_cli import app

        runner = CliRunner()

        # Create project structure
        project_dir = tmp_path / "test-project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".specify" / "extensions").mkdir(parents=True)

        # Mock catalog that returns a bundled extension without download_url
        mock_catalog = MagicMock()
        mock_catalog.get_extension_info.return_value = {
            "id": "git",
            "name": "Git Branching Workflow",
            "version": "1.0.0",
            "description": "Git branching extension",
            "bundled": True,
            "_install_allowed": True,
        }
        mock_catalog.search.return_value = []

        with patch("specify_cli.extensions.ExtensionCatalog", return_value=mock_catalog), \
             patch("specify_cli._locate_bundled_extension", return_value=None), \
             patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app,
                ["extension", "add", "git"],
                catch_exceptions=True,
            )

        assert result.exit_code != 0
        assert "bundled with spec-kit" in result.output
        assert "reinstall" in result.output.lower()

    def test_add_from_url_prompts_before_spinner(self, tmp_path):
        """Confirm prompt for --from <url> must fire before the console.status spinner.

        Regression test for #2783: typer.confirm() inside console.status()
        was overwritten by the Rich spinner, making the command appear hung.
        """
        from typer.testing import CliRunner
        from unittest.mock import patch, MagicMock
        from specify_cli import app

        project_dir = tmp_path / "test-project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        call_order: list[str] = []

        original_status = MagicMock()

        def record_status(*args, **kwargs):
            call_order.append("spinner")
            return original_status

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir), \
             patch("specify_cli.console.status", side_effect=record_status), \
             patch("typer.confirm", side_effect=lambda *a, **kw: (call_order.append("confirm"), False)[-1]):
            result = runner.invoke(
                app,
                ["extension", "add", "my-ext", "--from", "https://example.com/ext.zip"],
                catch_exceptions=True,
            )

        assert "confirm" in call_order, "confirm prompt was never called"
        # The confirm must fire BEFORE the spinner is entered
        if "spinner" in call_order:
            assert call_order.index("confirm") < call_order.index("spinner"), \
                f"confirm must precede spinner, got: {call_order}"
        assert result.exit_code == 0  # user declined → clean exit

    def test_add_from_url_cancel_exits_cleanly(self, tmp_path):
        """Declining the --from <url> confirmation should exit with code 0."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        project_dir = tmp_path / "test-project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir), \
             patch("typer.confirm", return_value=False):
            result = runner.invoke(
                app,
                ["extension", "add", "my-ext", "--from", "https://example.com/ext.zip"],
                catch_exceptions=True,
            )

        assert result.exit_code == 0
        assert "Cancelled" in result.output


class TestDownloadExtensionBundled:
    """Tests for download_extension handling of bundled extensions."""

    def test_download_extension_raises_for_bundled(self, temp_dir):
        """download_extension should raise a clear error for bundled extensions without a URL."""
        from unittest.mock import patch

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        bundled_ext_info = {
            "name": "Git Branching Workflow",
            "id": "git",
            "version": "1.0.0",
            "description": "Git workflow",
            "bundled": True,
        }

        with patch.object(catalog, "get_extension_info", return_value=bundled_ext_info):
            with pytest.raises(ExtensionError, match="bundled with spec-kit"):
                catalog.download_extension("git")

    def test_download_extension_allows_bundled_with_url(self, temp_dir):
        """download_extension should allow bundled extensions that have a download_url (newer version)."""
        from unittest.mock import patch, MagicMock
        import urllib.request

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        bundled_with_url = {
            "name": "Git Branching Workflow",
            "id": "git",
            "version": "2.0.0",
            "description": "Git workflow",
            "bundled": True,
            "download_url": "https://example.com/git-2.0.0.zip",
        }

        mock_response = MagicMock()
        mock_response.read.return_value = b"fake zip data"
        mock_response.__enter__ = lambda s: s
        mock_response.__exit__ = MagicMock(return_value=False)

        with patch.object(catalog, "get_extension_info", return_value=bundled_with_url), \
             patch.object(urllib.request, "urlopen", return_value=mock_response):
            result = catalog.download_extension("git")
            assert result.name == "git-2.0.0.zip"

    def test_download_extension_raises_no_url_for_non_bundled(self, temp_dir):
        """download_extension should raise 'no download URL' for non-bundled extensions without URL."""
        from unittest.mock import patch

        project_dir = temp_dir / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        catalog = ExtensionCatalog(project_dir)

        non_bundled_ext_info = {
            "name": "Some Extension",
            "id": "some-ext",
            "version": "1.0.0",
            "description": "Test",
        }

        with patch.object(catalog, "get_extension_info", return_value=non_bundled_ext_info):
            with pytest.raises(ExtensionError, match="has no download URL"):
                catalog.download_extension("some-ext")


class TestExtensionUpdateCLI:
    """CLI integration tests for extension update command."""

    @staticmethod
    def _create_extension_source(base_dir: Path, version: str, include_config: bool = False) -> Path:
        """Create a minimal extension source directory for install tests."""
        import yaml

        ext_dir = base_dir / f"test-ext-{version}"
        ext_dir.mkdir(parents=True, exist_ok=True)

        manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": "test-ext",
                "name": "Test Extension",
                "version": version,
                "description": "A test extension",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": "speckit.test-ext.hello",
                        "file": "commands/hello.md",
                        "description": "Test command",
                    }
                ]
            },
            "hooks": {
                "after_tasks": {
                    "command": "speckit.test-ext.hello",
                    "optional": True,
                }
            },
        }

        (ext_dir / "extension.yml").write_text(yaml.dump(manifest, sort_keys=False))
        commands_dir = ext_dir / "commands"
        commands_dir.mkdir(exist_ok=True)
        (commands_dir / "hello.md").write_text("---\ndescription: Test\n---\n\n$ARGUMENTS\n")
        if include_config:
            (ext_dir / "linear-config.yml").write_text("custom: true\nvalue: original\n")
        return ext_dir

    @staticmethod
    def _create_catalog_zip(zip_path: Path, version: str):
        """Create a minimal ZIP that passes extension_update ID validation."""
        import zipfile
        import yaml

        manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": "test-ext",
                "name": "Test Extension",
                "version": version,
                "description": "A test extension",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {"commands": [{"name": "speckit.test-ext.hello", "file": "commands/hello.md"}]},
        }

        with zipfile.ZipFile(zip_path, "w") as zf:
            zf.writestr("extension.yml", yaml.dump(manifest, sort_keys=False))

    def test_update_success_preserves_installed_at(self, tmp_path):
        """Successful update should keep original installed_at and apply new version."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()
        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".claude" / "skills").mkdir(parents=True)

        manager = ExtensionManager(project_dir)
        v1_dir = self._create_extension_source(tmp_path, "1.0.0", include_config=True)
        manager.install_from_directory(v1_dir, "0.1.0")
        original_installed_at = manager.registry.get("test-ext")["installed_at"]
        original_config_content = (
            project_dir / ".specify" / "extensions" / "test-ext" / "linear-config.yml"
        ).read_text()

        zip_path = tmp_path / "test-ext-update.zip"
        self._create_catalog_zip(zip_path, "2.0.0")
        v2_dir = self._create_extension_source(tmp_path, "2.0.0")

        def fake_install_from_zip(self_obj, _zip_path, speckit_version):
            return self_obj.install_from_directory(v2_dir, speckit_version)

        with patch.object(Path, "cwd", return_value=project_dir), \
             patch.object(ExtensionCatalog, "get_extension_info", return_value={
                 "id": "test-ext",
                 "name": "Test Extension",
                 "version": "2.0.0",
                 "_install_allowed": True,
             }), \
             patch.object(ExtensionCatalog, "download_extension", return_value=zip_path), \
             patch.object(ExtensionManager, "install_from_zip", fake_install_from_zip):
            result = runner.invoke(app, ["extension", "update", "test-ext"], input="y\n", catch_exceptions=True)

        assert result.exit_code == 0, result.output

        updated = ExtensionManager(project_dir).registry.get("test-ext")
        assert updated["version"] == "2.0.0"
        assert updated["installed_at"] == original_installed_at
        restored_config_content = (
            project_dir / ".specify" / "extensions" / "test-ext" / "linear-config.yml"
        ).read_text()
        assert restored_config_content == original_config_content

    def test_update_failure_rolls_back_registry_hooks_and_commands(self, tmp_path, monkeypatch):
        """Failed update should restore original registry, hooks, and command files."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app
        import yaml

        # Isolate home directory so Hermes' global ~/.hermes/skills/ doesn't
        # interfere — without a real skills dir, Hermes is skipped during
        # command registration, keeping the test focused on Claude/Codex/etc.
        fake_home = tmp_path / "home"
        fake_home.mkdir()
        monkeypatch.setattr(Path, "home", lambda: fake_home)

        runner = CliRunner()
        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()
        (project_dir / ".claude" / "skills").mkdir(parents=True)

        manager = ExtensionManager(project_dir)
        v1_dir = self._create_extension_source(tmp_path, "1.0.0")
        manager.install_from_directory(v1_dir, "0.1.0")

        backup_registry_entry = manager.registry.get("test-ext")
        hooks_before = yaml.safe_load((project_dir / ".specify" / "extensions.yml").read_text())

        registered_commands = backup_registry_entry.get("registered_commands", {})
        command_files = []
        from specify_cli.agents import CommandRegistrar as AgentRegistrar
        agent_registrar = AgentRegistrar()
        for agent_name, cmd_names in registered_commands.items():
            if agent_name not in agent_registrar.AGENT_CONFIGS:
                continue
            agent_cfg = agent_registrar.AGENT_CONFIGS[agent_name]
            commands_dir = AgentRegistrar._resolve_agent_dir(
                agent_name, agent_cfg, project_dir
            )
            for cmd_name in cmd_names:
                output_name = AgentRegistrar._compute_output_name(agent_name, cmd_name, agent_cfg)
                cmd_path = commands_dir / f"{output_name}{agent_cfg['extension']}"
                command_files.append(cmd_path)

        assert command_files, "Expected at least one registered command file"
        for cmd_file in command_files:
            assert cmd_file.exists(), f"Expected command file to exist before update: {cmd_file}"

        zip_path = tmp_path / "test-ext-update.zip"
        self._create_catalog_zip(zip_path, "2.0.0")

        with patch.object(Path, "cwd", return_value=project_dir), \
             patch.object(ExtensionCatalog, "get_extension_info", return_value={
                 "id": "test-ext",
                 "name": "Test Extension",
                 "version": "2.0.0",
                 "_install_allowed": True,
             }), \
             patch.object(ExtensionCatalog, "download_extension", return_value=zip_path), \
             patch.object(ExtensionManager, "install_from_zip", side_effect=RuntimeError("install failed")):
            result = runner.invoke(app, ["extension", "update", "test-ext"], input="y\n", catch_exceptions=True)

        assert result.exit_code == 1, result.output

        restored_entry = ExtensionManager(project_dir).registry.get("test-ext")
        assert restored_entry == backup_registry_entry

        hooks_after = yaml.safe_load((project_dir / ".specify" / "extensions.yml").read_text())
        assert hooks_after == hooks_before

        for cmd_file in command_files:
            assert cmd_file.exists(), f"Expected command file to be restored after rollback: {cmd_file}"


class TestExtensionListCLI:
    """Test extension list CLI output format."""

    def test_list_shows_extension_id(self, extension_dir, project_dir):
        """extension list should display the extension ID."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Install the extension using the manager
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "list"])

        assert result.exit_code == 0, result.output
        plain = strip_ansi(result.output)
        # Verify the extension ID is shown in the output
        assert "test-ext" in plain
        # Verify name and version are also shown
        assert "Test Extension" in plain
        assert "1.0.0" in plain


class TestExtensionPriority:
    """Test extension priority-based resolution."""

    def test_list_by_priority_empty(self, temp_dir):
        """Test list_by_priority on empty registry."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        result = registry.list_by_priority()

        assert result == []

    def test_list_by_priority_single(self, temp_dir):
        """Test list_by_priority with single extension."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0", "priority": 5})

        result = registry.list_by_priority()

        assert len(result) == 1
        assert result[0][0] == "test-ext"
        assert result[0][1]["priority"] == 5

    def test_list_by_priority_ordering(self, temp_dir):
        """Test list_by_priority returns extensions sorted by priority."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        # Add in non-priority order
        registry.add("ext-low", {"version": "1.0.0", "priority": 20})
        registry.add("ext-high", {"version": "1.0.0", "priority": 1})
        registry.add("ext-mid", {"version": "1.0.0", "priority": 10})

        result = registry.list_by_priority()

        assert len(result) == 3
        # Lower priority number = higher precedence (first)
        assert result[0][0] == "ext-high"
        assert result[1][0] == "ext-mid"
        assert result[2][0] == "ext-low"

    def test_list_by_priority_default(self, temp_dir):
        """Test list_by_priority uses default priority of 10."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        # Add without explicit priority
        registry.add("ext-default", {"version": "1.0.0"})
        registry.add("ext-high", {"version": "1.0.0", "priority": 1})
        registry.add("ext-low", {"version": "1.0.0", "priority": 20})

        result = registry.list_by_priority()

        assert len(result) == 3
        # ext-high (1), ext-default (10), ext-low (20)
        assert result[0][0] == "ext-high"
        assert result[1][0] == "ext-default"
        assert result[2][0] == "ext-low"

    def test_list_by_priority_invalid_priority_defaults(self, temp_dir):
        """Malformed priority values fall back to the default priority."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("ext-high", {"version": "1.0.0", "priority": 1})
        registry.data["extensions"]["ext-invalid"] = {
            "version": "1.0.0",
            "priority": "high",
        }
        registry._save()

        result = registry.list_by_priority()

        assert [item[0] for item in result] == ["ext-high", "ext-invalid"]
        assert result[1][1]["priority"] == 10

    def test_list_by_priority_excludes_disabled(self, temp_dir):
        """Test that list_by_priority excludes disabled extensions by default."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("ext-enabled", {"version": "1.0.0", "enabled": True, "priority": 5})
        registry.add("ext-disabled", {"version": "1.0.0", "enabled": False, "priority": 1})
        registry.add("ext-default", {"version": "1.0.0", "priority": 10})  # no enabled field = True

        # Default: exclude disabled
        by_priority = registry.list_by_priority()
        ext_ids = [p[0] for p in by_priority]
        assert "ext-enabled" in ext_ids
        assert "ext-default" in ext_ids
        assert "ext-disabled" not in ext_ids

    def test_list_by_priority_includes_disabled_when_requested(self, temp_dir):
        """Test that list_by_priority includes disabled extensions when requested."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("ext-enabled", {"version": "1.0.0", "enabled": True, "priority": 5})
        registry.add("ext-disabled", {"version": "1.0.0", "enabled": False, "priority": 1})

        # Include disabled
        by_priority = registry.list_by_priority(include_disabled=True)
        ext_ids = [p[0] for p in by_priority]
        assert "ext-enabled" in ext_ids
        assert "ext-disabled" in ext_ids
        # Disabled ext has lower priority number, so it comes first when included
        assert ext_ids[0] == "ext-disabled"

    def test_install_with_priority(self, extension_dir, project_dir):
        """Test that install_from_directory stores priority."""
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False, priority=5)

        metadata = manager.registry.get("test-ext")
        assert metadata["priority"] == 5

    def test_install_default_priority(self, extension_dir, project_dir):
        """Test that install_from_directory uses default priority of 10."""
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        metadata = manager.registry.get("test-ext")
        assert metadata["priority"] == 10

    def test_list_installed_includes_priority(self, extension_dir, project_dir):
        """Test that list_installed includes priority in returned data."""
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False, priority=3)

        installed = manager.list_installed()

        assert len(installed) == 1
        assert installed[0]["priority"] == 3

    def test_priority_preserved_on_update(self, temp_dir):
        """Test that registry update preserves priority."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)
        registry.add("test-ext", {"version": "1.0.0", "priority": 5, "enabled": True})

        # Update with new metadata (no priority specified)
        registry.update("test-ext", {"enabled": False})

        updated = registry.get("test-ext")
        assert updated["priority"] == 5  # Preserved
        assert updated["enabled"] is False  # Updated

    def test_corrupted_extension_entry_not_picked_up_as_unregistered(self, project_dir):
        """Corrupted registry entries are still tracked and NOT picked up as unregistered."""
        extensions_dir = project_dir / ".specify" / "extensions"

        valid_dir = extensions_dir / "valid-ext" / "templates"
        valid_dir.mkdir(parents=True)
        (valid_dir / "other-template.md").write_text("# Valid\n")

        broken_dir = extensions_dir / "broken-ext" / "templates"
        broken_dir.mkdir(parents=True)
        (broken_dir / "target-template.md").write_text("# Broken Target\n")

        registry = ExtensionRegistry(extensions_dir)
        registry.add("valid-ext", {"version": "1.0.0", "priority": 10})
        # Corrupt the entry - should still be tracked, not picked up as unregistered
        registry.data["extensions"]["broken-ext"] = "corrupted"
        registry._save()

        from specify_cli.presets import PresetResolver

        resolver = PresetResolver(project_dir)
        # Corrupted extension templates should NOT be resolved
        resolved = resolver.resolve("target-template")
        assert resolved is None

        # Valid extension template should still resolve
        valid_resolved = resolver.resolve("other-template")
        assert valid_resolved is not None
        assert "Valid" in valid_resolved.read_text()


class TestExtensionPriorityCLI:
    """Test extension priority CLI integration."""

    def test_add_with_priority_option(self, extension_dir, project_dir):
        """Test extension add command with --priority option."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, [
                "extension", "add", str(extension_dir), "--dev", "--priority", "3"
            ])

        assert result.exit_code == 0, result.output

        manager = ExtensionManager(project_dir)
        metadata = manager.registry.get("test-ext")
        assert metadata["priority"] == 3

    def test_list_shows_priority(self, extension_dir, project_dir):
        """Test extension list shows priority."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Install extension with priority
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False, priority=7)

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "list"])

        assert result.exit_code == 0, result.output
        plain = strip_ansi(result.output)
        assert "Priority: 7" in plain

    def test_set_priority_changes_priority(self, extension_dir, project_dir):
        """Test set-priority command changes extension priority."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Install extension with default priority
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Verify default priority
        assert manager.registry.get("test-ext")["priority"] == 10

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "set-priority", "test-ext", "5"])

        assert result.exit_code == 0, result.output
        plain = strip_ansi(result.output)
        assert "priority changed: 10 → 5" in plain

        # Reload registry to see updated value
        manager2 = ExtensionManager(project_dir)
        assert manager2.registry.get("test-ext")["priority"] == 5

    def test_set_priority_same_value_no_change(self, extension_dir, project_dir):
        """Test set-priority with same value shows already set message."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Install extension with priority 5
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False, priority=5)

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "set-priority", "test-ext", "5"])

        assert result.exit_code == 0, result.output
        plain = strip_ansi(result.output)
        assert "already has priority 5" in plain

    def test_set_priority_invalid_value(self, extension_dir, project_dir):
        """Test set-priority rejects invalid priority values."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Install extension
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "set-priority", "test-ext", "0"])

        assert result.exit_code == 1, result.output
        assert "Priority must be a positive integer" in result.output

    def test_set_priority_not_installed(self, project_dir):
        """Test set-priority fails for non-installed extension."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Ensure .specify exists
        (project_dir / ".specify").mkdir(parents=True, exist_ok=True)

        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "set-priority", "nonexistent", "5"])

        assert result.exit_code == 1, result.output
        assert "not installed" in result.output.lower() or "no extensions installed" in result.output.lower()

    def test_set_priority_by_display_name(self, extension_dir, project_dir):
        """Test set-priority works with extension display name."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        runner = CliRunner()

        # Install extension
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Use display name "Test Extension" instead of ID "test-ext"
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(app, ["extension", "set-priority", "Test Extension", "3"])

        assert result.exit_code == 0, result.output
        assert "priority changed" in result.output

        # Reload registry to see updated value
        manager2 = ExtensionManager(project_dir)
        assert manager2.registry.get("test-ext")["priority"] == 3


class TestExtensionPriorityBackwardsCompatibility:
    """Test backwards compatibility for extensions installed before priority feature."""

    def test_legacy_extension_without_priority_field(self, temp_dir):
        """Extensions installed before priority feature should default to 10."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        # Simulate legacy registry entry without priority field
        registry = ExtensionRegistry(extensions_dir)
        registry.data["extensions"]["legacy-ext"] = {
            "version": "1.0.0",
            "source": "local",
            "enabled": True,
            "installed_at": "2025-01-01T00:00:00Z",
            # No "priority" field - simulates pre-feature extension
        }
        registry._save()

        # Reload registry
        registry2 = ExtensionRegistry(extensions_dir)

        # list_by_priority should use default of 10
        result = registry2.list_by_priority()
        assert len(result) == 1
        assert result[0][0] == "legacy-ext"
        # Priority defaults to 10 and is normalized in returned metadata
        assert result[0][1]["priority"] == 10

    def test_legacy_extension_in_list_installed(self, extension_dir, project_dir):
        """list_installed returns priority=10 for legacy extensions without priority field."""
        manager = ExtensionManager(project_dir)

        # Install extension normally
        manager.install_from_directory(extension_dir, "0.1.0", register_commands=False)

        # Manually remove priority to simulate legacy extension
        ext_data = manager.registry.data["extensions"]["test-ext"]
        del ext_data["priority"]
        manager.registry._save()

        # list_installed should still return priority=10
        installed = manager.list_installed()
        assert len(installed) == 1
        assert installed[0]["priority"] == 10

    def test_mixed_legacy_and_new_extensions_ordering(self, temp_dir):
        """Legacy extensions (no priority) sort with default=10 among prioritized extensions."""
        extensions_dir = temp_dir / "extensions"
        extensions_dir.mkdir()

        registry = ExtensionRegistry(extensions_dir)

        # Add extension with explicit priority=5
        registry.add("ext-with-priority", {"version": "1.0.0", "priority": 5})

        # Add legacy extension without priority (manually)
        registry.data["extensions"]["legacy-ext"] = {
            "version": "1.0.0",
            "source": "local",
            "enabled": True,
            # No priority field
        }
        registry._save()

        # Add extension with priority=15
        registry.add("ext-low-priority", {"version": "1.0.0", "priority": 15})

        # Reload and check ordering
        registry2 = ExtensionRegistry(extensions_dir)
        result = registry2.list_by_priority()

        assert len(result) == 3
        # Order: ext-with-priority (5), legacy-ext (defaults to 10), ext-low-priority (15)
        assert result[0][0] == "ext-with-priority"
        assert result[1][0] == "legacy-ext"
        assert result[2][0] == "ext-low-priority"


class _StubManifest(ExtensionManifest):
    """ExtensionManifest stub for HookExecutor tests.

    Subclasses the real manifest so it satisfies ``register_hooks``'s type
    while bypassing the file-based parsing/validation pipeline. The inherited
    ``id`` and ``hooks`` properties read from ``data``, so populating ``data``
    is enough.
    """

    def __init__(self, ext_id: str, hooks: dict):
        self.data = {"extension": {"id": ext_id}, "hooks": hooks}


class TestHookExecutorRegistration:
    """Tests for HookExecutor.register_hooks / get_hooks_for_event with
    multi-entry hook events and per-entry priority ordering."""

    def test_register_hooks_single_mapping_back_compat(self, project_dir):
        """Single-mapping form continues to register exactly one entry with
        default priority."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.go"}})
        )

        config = executor.get_project_config()
        entries = config["hooks"]["after_tasks"]
        assert len(entries) == 1
        assert entries[0]["extension"] == "ext-a"
        assert entries[0]["command"] == "speckit.ext-a.go"
        assert entries[0]["priority"] == DEFAULT_HOOK_PRIORITY

    def test_register_hooks_multiple_entries_same_event(self, project_dir):
        """A list of mappings registers each entry under the same event."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.first", "description": "1st"},
                        {"command": "speckit.ext-a.second", "description": "2nd"},
                    ]
                },
            )
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert len(entries) == 2
        assert [e["command"] for e in entries] == [
            "speckit.ext-a.first",
            "speckit.ext-a.second",
        ]
        assert all(e["extension"] == "ext-a" for e in entries)

    def test_register_hooks_dedup_on_extension_and_command(self, project_dir):
        """Re-registering the same (extension, command) updates in place
        rather than appending a duplicate entry."""
        executor = HookExecutor(project_dir)
        manifest = _StubManifest(
            "ext-a",
            {
                "after_tasks": [
                    {"command": "speckit.ext-a.first", "description": "v1"},
                    {"command": "speckit.ext-a.second", "description": "v1"},
                ]
            },
        )
        executor.register_hooks(manifest)

        manifest.hooks["after_tasks"][0]["description"] = "v2"
        executor.register_hooks(manifest)

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert len(entries) == 2
        first = next(e for e in entries if e["command"] == "speckit.ext-a.first")
        assert first["description"] == "v2"

    def test_register_hooks_shape_change_removes_orphans(self, project_dir):
        """Reinstalling with a shorter hook shape (list → single mapping, or a
        shrunk list) purges the dropped commands instead of leaving orphans."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.first"},
                        {"command": "speckit.ext-a.second"},
                    ]
                },
            )
        )

        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.first"}})
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert [e["command"] for e in entries] == ["speckit.ext-a.first"]

    def test_register_hooks_single_to_list_reinstall_adds_entries(self, project_dir):
        """Reinstalling a single-mapping hook as a list adds the new entries."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.first"}})
        )
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.first"},
                        {"command": "speckit.ext-a.second"},
                    ]
                },
            )
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert [e["command"] for e in entries] == [
            "speckit.ext-a.first",
            "speckit.ext-a.second",
        ]

    def test_register_hooks_skips_entry_without_command(self, project_dir):
        """An entry lacking a command is skipped (defensive; validated
        manifests never reach this state)."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.go"},
                        {"optional": True},
                    ]
                },
            )
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert [e["command"] for e in entries] == ["speckit.ext-a.go"]

    def test_register_hooks_skips_non_dict_entry(self, project_dir):
        """A non-dict entry in a hook list is skipped rather than crashing
        (defensive; validated manifests never reach this state)."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {"after_tasks": [{"command": "speckit.ext-a.go"}, "not-a-mapping"]},
            )
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert [e["command"] for e in entries] == ["speckit.ext-a.go"]

    def test_register_hooks_purges_dropped_event_orphans(self, project_dir):
        """Re-registering without an event it previously declared purges this
        extension's entries from that event, scoped to this extension."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": {"command": "speckit.ext-a.tasks"},
                    "after_plan": {"command": "speckit.ext-a.plan"},
                    "after_implement": {"command": "speckit.ext-a.impl"},
                },
            )
        )
        executor.register_hooks(
            _StubManifest("ext-b", {"after_plan": {"command": "speckit.ext-b.plan"}})
        )

        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.tasks"}})
        )

        hooks = executor.get_project_config()["hooks"]
        assert [e["command"] for e in hooks["after_tasks"]] == ["speckit.ext-a.tasks"]
        assert [e["command"] for e in hooks["after_plan"]] == ["speckit.ext-b.plan"]
        assert "after_implement" not in hooks

    def test_register_hooks_dropping_all_hooks_purges_orphans(self, project_dir):
        """Reinstalling with an empty hooks mapping still purges this
        extension's entries, scoped to this extension."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.go"}})
        )
        executor.register_hooks(
            _StubManifest("ext-b", {"after_tasks": {"command": "speckit.ext-b.go"}})
        )

        executor.register_hooks(_StubManifest("ext-a", {}))

        hooks = executor.get_project_config()["hooks"]
        assert [e["command"] for e in hooks["after_tasks"]] == ["speckit.ext-b.go"]

    def test_register_hooks_empty_hooks_purge_survives_corrupt_entry(self, project_dir):
        """A corrupt non-dict entry already on disk does not break the
        empty-hooks orphan purge; it is dropped and valid entries survive."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.go"}})
        )
        executor.register_hooks(
            _StubManifest("ext-b", {"after_tasks": {"command": "speckit.ext-b.go"}})
        )
        config = executor.get_project_config()
        config["hooks"]["after_tasks"].append("corrupt-non-dict-entry")
        executor.save_project_config(config)

        executor.register_hooks(_StubManifest("ext-a", {}))

        hooks = executor.get_project_config()["hooks"]
        assert [e["command"] for e in hooks["after_tasks"]] == ["speckit.ext-b.go"]

    def test_register_hooks_duplicate_command_moves_to_end(self, project_dir):
        """A command repeated in one manifest keeps the last value and the last
        insertion position, so equal-priority tie order is 'last wins'."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.dup", "description": "first"},
                        {"command": "speckit.ext-a.other"},
                        {"command": "speckit.ext-a.dup", "description": "last"},
                    ]
                },
            )
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert [e["command"] for e in entries] == [
            "speckit.ext-a.other",
            "speckit.ext-a.dup",
        ]
        assert entries[-1]["description"] == "last"

    def test_register_hooks_preserves_other_extensions(self, project_dir):
        """Re-registering one extension must not disturb another extension's
        entries on the same event."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.go"}})
        )
        executor.register_hooks(
            _StubManifest("ext-b", {"after_tasks": {"command": "speckit.ext-b.go"}})
        )

        executor.register_hooks(
            _StubManifest("ext-a", {"after_tasks": {"command": "speckit.ext-a.go"}})
        )

        entries = executor.get_project_config()["hooks"]["after_tasks"]
        assert sorted(e["extension"] for e in entries) == ["ext-a", "ext-b"]

    def test_get_hooks_for_event_sorts_by_priority(self, project_dir):
        """Returned entries are sorted by priority ascending; equal priorities
        preserve insertion order via stable sort."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.mid", "priority": 10},
                        {"command": "speckit.ext-a.first", "priority": 1},
                        {"command": "speckit.ext-a.late", "priority": 20},
                        {"command": "speckit.ext-a.mid-tied", "priority": 10},
                    ]
                },
            )
        )

        ordered = executor.get_hooks_for_event("after_tasks")
        assert [e["command"] for e in ordered] == [
            "speckit.ext-a.first",
            "speckit.ext-a.mid",
            "speckit.ext-a.mid-tied",
            "speckit.ext-a.late",
        ]

    def test_get_hooks_for_event_orders_across_extensions(self, project_dir):
        """Priority controls execution order across extensions regardless of
        install order (Issue #2378 use case)."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-report",
                {"after_plan": {"command": "speckit.ext-report.run", "priority": 20}},
            )
        )
        executor.register_hooks(
            _StubManifest(
                "ext-verify",
                {"after_plan": {"command": "speckit.ext-verify.run", "priority": 5}},
            )
        )

        ordered = executor.get_hooks_for_event("after_plan")
        assert [e["command"] for e in ordered] == [
            "speckit.ext-verify.run",
            "speckit.ext-report.run",
        ]

    def test_get_hooks_for_event_treats_missing_priority_as_default(self, project_dir):
        """Entries persisted before priority was introduced should be sorted
        as if their priority equaled DEFAULT_HOOK_PRIORITY."""
        executor = HookExecutor(project_dir)
        # Legacy on-disk entry with no priority key.
        # register_hooks now always sets one, so write this state directly.
        executor.save_project_config({
            "installed": [],
            "settings": {"auto_execute_hooks": True},
            "hooks": {
                "after_tasks": [
                    {
                        "extension": "legacy",
                        "command": "speckit.legacy.go",
                        "enabled": True,
                    },
                    {
                        "extension": "newer",
                        "command": "speckit.newer.first",
                        "enabled": True,
                        "priority": 1,
                    },
                ]
            },
        })

        ordered = executor.get_hooks_for_event("after_tasks")
        assert [e["command"] for e in ordered] == [
            "speckit.newer.first",
            "speckit.legacy.go",
        ]

    def test_get_hooks_for_event_tolerates_corrupted_priority(self, project_dir):
        """A corrupted on-disk ``priority`` (non-numeric, None, or < 1) is
        normalized to the default instead of raising during sort."""
        executor = HookExecutor(project_dir)
        executor.save_project_config({
            "installed": [],
            "settings": {"auto_execute_hooks": True},
            "hooks": {
                "after_tasks": [
                    {
                        "extension": "corrupt",
                        "command": "speckit.corrupt.go",
                        "enabled": True,
                        "priority": "not-a-number",
                    },
                    {
                        "extension": "early",
                        "command": "speckit.early.go",
                        "enabled": True,
                        "priority": 1,
                    },
                ]
            },
        })

        ordered = executor.get_hooks_for_event("after_tasks")
        assert [e["command"] for e in ordered] == [
            "speckit.early.go",
            "speckit.corrupt.go",
        ]

    def test_unregister_hooks_removes_all_extension_entries(self, project_dir):
        """unregister_hooks removes every entry for the extension regardless
        of how many were registered to a given event."""
        executor = HookExecutor(project_dir)
        executor.register_hooks(
            _StubManifest(
                "ext-a",
                {
                    "after_tasks": [
                        {"command": "speckit.ext-a.first"},
                        {"command": "speckit.ext-a.second"},
                    ]
                },
            )
        )
        executor.register_hooks(
            _StubManifest("ext-b", {"after_tasks": {"command": "speckit.ext-b.solo"}})
        )

        executor.unregister_hooks("ext-a")

        entries = executor.get_project_config()["hooks"].get("after_tasks", [])
        assert [e["extension"] for e in entries] == ["ext-b"]


class TestHookInvocationRendering:
    """Test hook invocation formatting for different agent modes."""

    def test_kimi_hooks_render_skill_invocation(self, project_dir):
        """Kimi projects should render /skill:speckit-* invocations."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "kimi", "ai_skills": False}))

        hook_executor = HookExecutor(project_dir)
        message = hook_executor.format_hook_message(
            "before_plan",
            [
                {
                    "extension": "test-ext",
                    "command": "speckit.plan",
                    "optional": False,
                }
            ],
        )

        assert "Executing: `/skill:speckit-plan`" in message
        assert "EXECUTE_COMMAND: speckit.plan" in message
        assert "EXECUTE_COMMAND_INVOCATION: /skill:speckit-plan" in message

    def test_codex_hooks_render_dollar_skill_invocation(self, project_dir):
        """Codex projects with skills mode should render $speckit-* invocations."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "codex", "ai_skills": True}))

        hook_executor = HookExecutor(project_dir)
        execution = hook_executor.execute_hook(
            {
                "extension": "test-ext",
                "command": "speckit.tasks",
                "optional": False,
            }
        )

        assert execution["command"] == "speckit.tasks"
        assert execution["invocation"] == "$speckit-tasks"

    def test_zcode_hooks_render_dollar_skill_invocation(self, project_dir):
        """ZCode projects with skills mode should render $speckit-* invocations."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "zcode", "ai_skills": True}))

        hook_executor = HookExecutor(project_dir)
        execution = hook_executor.execute_hook(
            {
                "extension": "test-ext",
                "command": "speckit.tasks",
                "optional": False,
            }
        )

        assert execution["command"] == "speckit.tasks"
        assert execution["invocation"] == "$speckit-tasks"

    def test_non_boolean_ai_skills_keeps_default_hook_invocation(self, project_dir):
        """Corrupted truthy ai_skills values should not enable skill invocation."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(
            json.dumps({"ai": "codex", "ai_skills": "false"}), encoding="utf-8"
        )

        hook_executor = HookExecutor(project_dir)
        execution = hook_executor.execute_hook(
            {
                "extension": "test-ext",
                "command": "speckit.tasks",
                "optional": False,
            }
        )

        assert execution["command"] == "speckit.tasks"
        assert execution["invocation"] == "/speckit.tasks"

    def test_cline_hooks_render_hyphenated_invocation(self, project_dir):
        """Cline projects should render /speckit-* invocations."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "cline"}))

        hook_executor = HookExecutor(project_dir)
        execution = hook_executor.execute_hook(
            {
                "extension": "test-ext",
                "command": "speckit.tasks",
                "optional": False,
            }
        )

        assert execution["command"] == "speckit.tasks"
        assert execution["invocation"] == "/speckit-tasks"

    def test_cline_hooks_render_extension_command(self, project_dir):
        """Cline projects should render /speckit-my-ext-cmd for extension hooks."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "cline"}))

        hook_executor = HookExecutor(project_dir)
        # Test with a non-speckit. command
        execution = hook_executor.execute_hook(
            {
                "extension": "test-ext",
                "command": "my-extension.do-something",
                "optional": False,
            }
        )

        assert execution["command"] == "my-extension.do-something"
        assert execution["invocation"] == "/speckit-my-extension-do-something"

    def test_non_skill_command_keeps_slash_invocation(self, project_dir):
        """Custom hook commands should keep slash invocation style."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "kimi", "ai_skills": False}))

        hook_executor = HookExecutor(project_dir)
        message = hook_executor.format_hook_message(
            "before_tasks",
            [
                {
                    "extension": "test-ext",
                    "command": "pre_tasks_test",
                    "optional": False,
                }
            ],
        )

        assert "Executing: `/pre_tasks_test`" in message
        assert "EXECUTE_COMMAND: pre_tasks_test" in message
        assert "EXECUTE_COMMAND_INVOCATION: /pre_tasks_test" in message

    def test_extension_command_uses_hyphenated_skill_invocation(self, project_dir):
        """Multi-segment extension command ids should map to hyphenated skills."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "kimi", "ai_skills": False}))

        hook_executor = HookExecutor(project_dir)
        message = hook_executor.format_hook_message(
            "after_tasks",
            [
                {
                    "extension": "test-ext",
                    "command": "speckit.test-ext.hello",
                    "optional": False,
                }
            ],
        )

        assert "Executing: `/skill:speckit-test-ext-hello`" in message
        assert "EXECUTE_COMMAND: speckit.test-ext.hello" in message
        assert "EXECUTE_COMMAND_INVOCATION: /skill:speckit-test-ext-hello" in message

    def test_hook_executor_caches_init_options_lookup(self, project_dir, monkeypatch):
        """Init options should be loaded once per executor instance."""
        calls = {"count": 0}

        def fake_load_init_options(_project_root):
            calls["count"] += 1
            return {"ai": "kimi", "ai_skills": False}

        monkeypatch.setattr("specify_cli.load_init_options", fake_load_init_options)

        hook_executor = HookExecutor(project_dir)
        assert hook_executor._render_hook_invocation("speckit.plan") == "/skill:speckit-plan"
        assert hook_executor._render_hook_invocation("speckit.tasks") == "/skill:speckit-tasks"
        assert calls["count"] == 1

    def test_hook_message_falls_back_when_invocation_is_empty(self, project_dir):
        """Hook messages should still render actionable command placeholders."""
        init_options = project_dir / ".specify" / "init-options.json"
        init_options.parent.mkdir(parents=True, exist_ok=True)
        init_options.write_text(json.dumps({"ai": "kimi", "ai_skills": False}))

        hook_executor = HookExecutor(project_dir)
        message = hook_executor.format_hook_message(
            "after_tasks",
            [
                {
                    "extension": "test-ext",
                    "command": None,
                    "optional": False,
                }
            ],
        )

        assert "Executing: `/<missing command>`" in message
        assert "EXECUTE_COMMAND: <missing command>" in message
        assert "EXECUTE_COMMAND_INVOCATION: /<missing command>" in message


class TestExtensionRemoveCLI:
    """CLI tests for `specify extension remove` confirmation prompt wording."""

    def _install_ext(self, project_dir, ext_dir):
        """Install extension and return the manager."""
        manager = ExtensionManager(project_dir)
        manager.install_from_directory(ext_dir, "0.1.0", register_commands=False)
        return manager

    def test_remove_confirmation_singular_command(self, tmp_path, extension_dir):
        """Confirmation prompt should say '1 command' (singular) when one command registered."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        manager = self._install_ext(project_dir, extension_dir)
        # Inject registered_commands with 1 entry so cmd_count == 1
        manager.registry.update("test-ext", {"registered_commands": {"claude": ["speckit.test-ext.hello"]}})

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app, ["extension", "remove", "test-ext"], input="n\n", catch_exceptions=False
            )

        assert "1 command" in result.output
        assert "1 commands" not in result.output

    def test_remove_confirmation_plural_commands(self, tmp_path, extension_dir):
        """Confirmation prompt should say '2 commands' (plural) when two commands registered."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        manager = self._install_ext(project_dir, extension_dir)
        # Inject registered_commands with 2 entries so cmd_count == 2
        manager.registry.update("test-ext", {"registered_commands": {"claude": ["speckit.test-ext.hello", "speckit.test-ext.run"]}})

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app, ["extension", "remove", "test-ext"], input="n\n", catch_exceptions=False
            )

        assert "2 commands" in result.output


class TestClineExtensionHyphenation:
    """Test that Cline integration uses hyphenated commands and frontmatter references."""

    def _setup_mock_extension(self, tmp_path, ai_name):
        import yaml
        import json

        # 1. Setup mock project
        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        init_options = project_dir / ".specify" / "init-options.json"
        init_options.write_text(json.dumps({"ai": ai_name}), encoding="utf-8")

        if ai_name == "cline":
            commands_dest_dir = project_dir / ".clinerules" / "workflows"
        else:
            commands_dest_dir = project_dir / ".agents" / "commands"
        commands_dest_dir.mkdir(parents=True, exist_ok=True)

        # 2. Setup mock extension directory
        ext_dir = tmp_path / "mock-ext"
        ext_dir.mkdir()

        manifest_data = {
            "schema_version": "1.0",
            "extension": {
                "id": "mock-ext",
                "name": "Mock Extension",
                "version": "1.0.0",
                "description": f"Mock extension for {ai_name} tests",
                "author": "Tester",
                "repository": "https://github.com/test/mock-ext",
                "license": "MIT",
            },
            "requires": {
                "speckit_version": ">=0.1.0",
            },
            "provides": {
                "commands": [
                    {
                        "name": "speckit.mock-ext.hello",
                        "file": "commands/hello.md",
                        "description": "Test hello command",
                        "aliases": ["speckit.mock-ext.greet"]
                    }
                ]
            }
        }

        with open(ext_dir / "extension.yml", "w", encoding="utf-8") as f:
            yaml.dump(manifest_data, f)

        commands_dir = ext_dir / "commands"
        commands_dir.mkdir()

        # Command file with dotted speckit references in frontmatter and body
        cmd_content = """---
description: "Test hello command"
agent: speckit.tasks
handoffs:
  - agent: speckit.iterate.start
    message: "Hand off to start"
---

# Test Hello Command

Please refer to speckit.mock-ext.greet for instructions.
$ARGUMENTS
"""
        (commands_dir / "hello.md").write_text(cmd_content, encoding="utf-8")

        return project_dir, ext_dir, commands_dest_dir

    def test_cline_extension_hyphenation(self, tmp_path):
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app
        from specify_cli.agents import CommandRegistrar

        project_dir, ext_dir, cline_workflows_dir = self._setup_mock_extension(tmp_path, "cline")

        # 3. Run specify extension add
        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app, ["extension", "add", str(ext_dir), "--dev"], catch_exceptions=False
            )

        # Verify CLI printed hyphenated commands
        # Note: We assert that the primary command 'speckit-mock-ext-hello' is printed,
        # but we do not assert that the alias 'speckit-mock-ext-greet' is printed in the console
        # because manifest.commands only lists primary commands.
        assert "speckit-mock-ext-hello" in result.output
        assert "speckit.mock-ext.hello" not in result.output

        # Verify on-disk command names are hyphenated
        hello_file = cline_workflows_dir / "speckit-mock-ext-hello.md"
        greet_file = cline_workflows_dir / "speckit-mock-ext-greet.md"

        assert hello_file.exists()
        assert greet_file.exists()

        # Verify frontmatter in the generated files is recursively hyphenated
        hello_text = hello_file.read_text(encoding="utf-8")
        hello_fm, hello_body = CommandRegistrar.parse_frontmatter(hello_text)
        assert hello_fm["agent"] == "speckit-tasks"
        assert hello_fm["handoffs"][0]["agent"] == "speckit-iterate-start"

        # Verify body references are hyphenated for Cline
        assert "speckit-mock-ext-greet" in hello_body
        assert "speckit.mock-ext.greet" not in hello_body

    def test_non_cline_extension_no_hyphenation(self, tmp_path):
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app
        from specify_cli.agents import CommandRegistrar

        project_dir, ext_dir, claude_commands_dir = self._setup_mock_extension(tmp_path, "claude")

        # 3. Run specify extension add
        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            result = runner.invoke(
                app, ["extension", "add", str(ext_dir), "--dev"], catch_exceptions=False
            )

        # Verify CLI printed dotted commands
        # Note: We assert that the primary command 'speckit.mock-ext.hello' is printed,
        # but we do not assert that the alias 'speckit.mock-ext.greet' is printed in the console
        # because manifest.commands only lists primary commands.
        assert "speckit.mock-ext.hello" in result.output
        assert "speckit-mock-ext-hello" not in result.output

        # Verify on-disk command names are dotted
        hello_file = claude_commands_dir / "speckit.mock-ext.hello.md"
        greet_file = claude_commands_dir / "speckit.mock-ext.greet.md"

        assert hello_file.exists()
        assert greet_file.exists()

        # Verify frontmatter references are still dotted
        hello_text = hello_file.read_text(encoding="utf-8")
        hello_fm, hello_body = CommandRegistrar.parse_frontmatter(hello_text)
        assert hello_fm["agent"] == "speckit.tasks"
        assert hello_fm["handoffs"][0]["agent"] == "speckit.iterate.start"

        # Verify body references are still dotted for non-Cline
        assert "speckit.mock-ext.greet" in hello_body
        assert "speckit-mock-ext-greet" not in hello_body


class TestExtensionForceCLI:
    """CLI tests for `specify extension add --dev --force`."""

    def _create_minimal_extension(self, base_dir: str | Path, ext_id: str = "test-ext") -> Path:
        """Create a minimal extension directory with manifest."""
        import yaml

        ext_dir = Path(base_dir) / ext_id
        ext_dir.mkdir(parents=True, exist_ok=True)
        (ext_dir / "commands").mkdir()

        manifest = {
            "schema_version": "1.0",
            "extension": {
                "id": ext_id,
                "name": "Test Extension",
                "version": "1.0.0",
                "description": "Test",
            },
            "requires": {"speckit_version": ">=0.1.0"},
            "provides": {
                "commands": [
                    {
                        "name": f"speckit.{ext_id}.hello",
                        "file": "commands/hello.md",
                        "description": "Test command",
                    }
                ]
            },
        }

        (ext_dir / "extension.yml").write_text(yaml.dump(manifest))
        (ext_dir / "commands" / "hello.md").write_text(
            "---\ndescription: Test\n---\n\nHello $ARGUMENTS\n"
        )
        return ext_dir

    def test_add_dev_force_reinstall(self, tmp_path):
        """extension add --dev --force should reinstall without error."""
        from typer.testing import CliRunner
        from unittest.mock import patch
        from specify_cli import app

        project_dir = tmp_path / "project"
        project_dir.mkdir()
        (project_dir / ".specify").mkdir()

        ext_src = self._create_minimal_extension(tmp_path)

        runner = CliRunner()
        with patch.object(Path, "cwd", return_value=project_dir):
            # First install
            result1 = runner.invoke(
                app, ["extension", "add", str(ext_src), "--dev"], catch_exceptions=False
            )
            assert result1.exit_code == 0, strip_ansi(result1.output)
            assert "installed" in strip_ansi(result1.output)

            # Force reinstall
            result2 = runner.invoke(
                app, ["extension", "add", str(ext_src), "--dev", "--force"], catch_exceptions=False
            )
            assert result2.exit_code == 0, strip_ansi(result2.output)
            assert "installed" in strip_ansi(result2.output)