Skip to content

X4-COMPLETE.md

Latest commit

 

History

History
296 lines (221 loc) · 7.96 KB

X4-COMPLETE.md

File metadata and controls

296 lines (221 loc) · 7.96 KB
Raw

✅ X-4 Evidence Attachment — COMPLETE

Date: February 20, 2026
Branch: feature/x4-orchestration-integration
Status: ✅ IMPLEMENTATION COMPLETE

Summary

X-4 Evidence Attachment has been successfully implemented with full DoD compliance, comprehensive testing, and zero architectural violations.

Test Results: ✅ 21/21 PASS

collected 21 items

tests/test_evidence_attachment.py::test_evidence_attachment_valid PASSED                    [  4%]
tests/test_evidence_attachment.py::test_evidence_attachment_optional_score PASSED           [  9%]
tests/test_evidence_attachment.py::test_evidence_attachment_rejects_extra_fields PASSED     [ 14%]
tests/test_evidence_attachment.py::test_invocation_response_can_hold_evidence PASSED        [ 19%]
tests/test_evidence_attachment.py::test_invocation_response_empty_evidence_by_default PASSED[ 23%]
tests/test_evidence_attachment.py::test_evidence_human_readable_snippet PASSED              [ 28%]
tests/test_evidence_attachment.py::test_echo_task_passes_through_evidence PASSED            [ 33%]
tests/test_evidence_attachment.py::test_echo_task_without_evidence PASSED                   [ 38%]
tests/test_evidence_attachment.py::test_echo_task_ignores_invalid_evidence PASSED           [ 42%]
tests/test_evidence_attachment.py::test_error_response_has_empty_evidence PASSED            [ 47%]
tests/test_phase2a.py::test_invocation_request_valid PASSED                                 [ 52%]
tests/test_phase2a.py::test_invocation_request_rejects_extra_fields PASSED                  [ 57%]
tests/test_phase2a.py::test_invocation_request_privacy_level_optional PASSED                [ 61%]
tests/test_phase2a.py::test_invocation_request_privacy_level_valid PASSED                   [ 66%]
tests/test_phase2a.py::test_error_detail_structure PASSED                                   [ 71%]
tests/test_phase2a.py::test_invocation_response_success PASSED                              [ 76%]
tests/test_phase2a.py::test_invocation_response_error PASSED                                [ 80%]
tests/test_phase2a.py::test_executor_echo_task PASSED                                       [ 85%]
tests/test_phase2a.py::test_executor_unsupported_task PASSED                                [ 90%]
tests/test_phase2a.py::test_executor_trace_id_propagation PASSED                            [ 95%]
tests/test_phase2a.py::test_executor_deterministic PASSED                                   [100%]

=========================================================================================== 21 passed in 0.08s ============================================================================================

DoD Verification ✅

✅ DoD-1: Response includes source reference

Requirement: Response must include source reference information.

Implementation: EvidenceAttachment model with:

  • ✅ source_id: Unique identifier
  • ✅ source_type: Type (pdf, web, note)
  • ✅ location: Page/section info
  • ✅ snippet: Human-readable excerpt
  • ✅ score: Optional relevance score

Verified by:

  • test_evidence_source_reference_fields() (integration)
  • test_evidence_attachment_valid() (unit)
  • test_invocation_response_can_hold_evidence() (unit)

✅ DoD-2: Evidence format human-readable

Requirement: Evidence format must be human-readable.

Implementation:

  • ✅ snippet field contains plain UTF-8 text
  • ✅ Supports multiple languages (English, Japanese, etc.)
  • ✅ No binary or encoded formats

Verified by:

  • test_evidence_human_readable_format() (integration)
  • test_evidence_human_readable_snippet() (unit)

Implementation Details

Models Added/Modified

# NEW: EvidenceAttachment
class EvidenceAttachment(BaseModel):
    model_config = ConfigDict(extra="forbid")
    source_id: str
    source_type: str
    location: str
    snippet: str
    score: Optional[float]

# MODIFIED: InvocationResponse
class InvocationResponse(BaseModel):
    # ...existing fields...
    evidence: list[EvidenceAttachment] = Field(default_factory=list)

Executor Logic

# Echo task: Parse and passthrough evidence
if "evidence" in payload and isinstance(payload["evidence"], list):
    for evidence_dict in payload["evidence"]:
        if isinstance(evidence_dict, dict):
            try:
                evidence_item = EvidenceAttachment(**evidence_dict)
                evidence_list.append(evidence_item)
            except Exception:
                pass  # Skip invalid items gracefully

return InvocationResponse(..., evidence=evidence_list)

Files Changed

Modified (4 files)

  1. app/models.py (+28 lines)

    • Added EvidenceAttachment model
    • Extended InvocationResponse with evidence field

  2. app/executor.py (+14 lines)

    • Added evidence parsing in echo task
    • Added empty evidence to error responses

  3. test_compliance.py (+138 lines)

    • Added 4 integration tests

  4. README.md (+35 lines)

    • Updated version to 2.1.0
    • Added evidence examples

Created (4 files)

  1. tests/test_evidence_attachment.py (236 lines)

    • 10 unit tests

  2. X4-EVIDENCE-IMPLEMENTATION.md (445 lines)

    • Full implementation details

  3. X4-IMPLEMENTATION-SUMMARY.md (420 lines)

    • Summary documentation

  4. X4-COMPLETION-CHECKLIST.md (311 lines)

    • Implementation checklist

Architectural Compliance ✅

No Violations

  • ❌ No routing logic added
  • ❌ No session storage added
  • ❌ No persistence added
  • ❌ No background tasks added
  • ✅ Single invocation boundary maintained
  • ✅ Stateless execution preserved
  • ✅ Deterministic behavior maintained

Backward Compatibility

  • ✅ All Phase 2A tests pass (11/11)
  • ✅ Evidence defaults to empty list
  • ✅ No breaking changes to API
  • ✅ Existing fields unchanged

API Example

Request with Evidence

POST /invoke
{
  "session_id": "uuid",
  "request_id": "uuid",
  "task_type": "echo",
  "payload": {
    "answer": "Based on documents...",
    "evidence": [
      {
        "source_id": "doc-001#p3",
        "source_type": "pdf",
        "location": "p.3",
        "snippet": "Human-readable excerpt from page 3.",
        "score": 0.95
      }
    ]
  },
  "timestamp": "2026-02-20T10:00:00Z",
  "trace_id": "uuid"
}

Response with Evidence

{
  "session_id": "uuid",
  "request_id": "uuid",
  "trace_id": "uuid",
  "status": "success",
  "result": { "answer": "Based on documents..." },
  "error": null,
  "timestamp": "2026-02-20T10:00:01Z",
  "execution_time_ms": 52,
  "evidence": [
    {
      "source_id": "doc-001#p3",
      "source_type": "pdf",
      "location": "p.3",
      "snippet": "Human-readable excerpt from page 3.",
      "score": 0.95
    }
  ]
}

Quick Reference

Run Tests

# All tests
pytest tests/ -v

# X-4 tests only
pytest tests/test_evidence_attachment.py -v

# Phase 2A regression
pytest tests/test_phase2a.py -v

# Integration tests (requires server)
python test_compliance.py

Start Server

uvicorn app.main:app --reload --host 127.0.0.1 --port 8000

Documentation

📄 Full Details: X4-EVIDENCE-IMPLEMENTATION.md
📋 Summary: X4-IMPLEMENTATION-SUMMARY.md
✅ Checklist: X4-COMPLETION-CHECKLIST.md
📖 API Docs: README.md

Next Steps

Immediate

  • Implementation complete
  • All tests passing
  • Documentation complete
  • Ready for code review
  • Ready for merge to main

Future (Out of Scope)

  1. Implement real document search/retrieval
  2. Add relevance score computation
  3. Implement evidence ranking
  4. Add evidence validation rules
  5. Support evidence templates

Sign-Off

Implementation Status: ✅ COMPLETE
Test Status: ✅ 21/21 PASS
DoD Status: ✅ ALL CRITERIA MET
Architecture Status: ✅ NO VIOLATIONS
Backward Compatibility: ✅ MAINTAINED

Ready for: Code review and merge

Implemented by: AI Assistant
Date: February 20, 2026
Branch: feature/x4-orchestration-integration
Version: 2.1.0