Replace cover image with new PNG, clean up old variants

- New promotional cover.png generated with Remotion
- Remove old SVG cover and all experimental cover variants
- Update README to reference cover.png
- Normalize em dashes to regular dashes across descriptions

Co-authored-by: CommandCodeBot <noreply@commandcode.ai>

Author: saqibameen

.github/cover.png

@@ -1,5 +1,5 @@
 <p align="center">
-  <img src=".github/cover.svg?v=2" alt="kill-the-port" />
+  <img src=".github/cover.png" alt="kill-the-port" />
 </p>
 
 # kill-the-port

.github/cover.svg

@@ -1,7 +1,7 @@
 {
   "name": "kill-the-port",
   "version": "0.1.2",
-  "description": "Kill processes on specified ports — fast, native, cross-platform. Supports multi-port, ranges, TCP/UDP.",
+  "description": "Kill processes on specified ports - fast, native, cross-platform. Supports multi-port, ranges, TCP/UDP.",
   "type": "module",
   "bin": {
     "kill-the-port": "dist/cli.js",

README.md

@@ -19,7 +19,7 @@ use macos as platform;
 use windows as platform;
 
 #[derive(Parser)]
-#[command(name = "kill-the-port", version, about = "Kill processes on specified ports — fast")]
+#[command(name = "kill-the-port", version, about = "Kill processes on specified ports - fast")]
 struct Cli {
     /// Ports to kill (e.g. 3000 8080 or 3000-3010)
     #[arg(required = true)]
@@ -89,7 +89,7 @@ fn main() {
     } else {
         for r in &results {
             if let Some(ref err) = r.error {
-                eprintln!("Port {}: error — {}", r.port, err);
+                eprintln!("Port {}: error - {}", r.port, err);
                 continue;
             }
             if r.pids.is_empty() {

package.json

@@ -11,7 +11,7 @@ const program = new Command();
 
 program
   .name('kill-the-port')
-  .description('Kill processes on specified ports — fast, native, cross-platform')
+  .description('Kill processes on specified ports - fast, native, cross-platform')
   .version(version, '-v, --version')
   .argument('<ports...>', 'ports to kill (e.g. 3000 8080 3000-3010 3000,3001)')
   .option('-p, --protocol <protocol>', 'protocol to target', 'tcp')