fix: Update search-server references from .mjs to .cjs to match actual build output

- Update plugin/.mcp.json to reference search-server.cjs
- Update docs/public/configuration.mdx to reference search-server.cjs
- Update docs/public/development.mdx to reference search-server.cjs
- Remove stale plugin/scripts/search-server.mjs file

Co-authored-by: thedotmack <683968+thedotmack@users.noreply.github.com>

docs/public/configuration.mdx

@@ -82,7 +82,7 @@ ${CLAUDE_PLUGIN_ROOT}/
 │   ├── summary-hook.js     # Summary generation hook
 │   ├── cleanup-hook.js     # Session cleanup hook
 │   ├── worker-service.cjs  # Worker service (CJS)
-│   └── search-server.mjs   # MCP search server (ESM)
+│   └── search-server.cjs   # MCP search server (CJS)
 └── ui/
     └── viewer.html         # Web viewer UI bundle
 ```

docs/public/development.mdx

@@ -33,7 +33,7 @@ The build process uses esbuild to compile TypeScript:
 
 1. Compiles TypeScript to JavaScript
 2. Creates standalone executables for each hook in `plugin/scripts/`
-3. Bundles MCP search server to `plugin/scripts/search-server.mjs`
+3. Bundles MCP search server to `plugin/scripts/search-server.cjs`
 4. Bundles worker service to `plugin/scripts/worker-service.cjs`
 5. Bundles web viewer UI to `plugin/ui/viewer.html`
 
@@ -41,7 +41,7 @@ The build process uses esbuild to compile TypeScript:
 - Hook executables: `*-hook.js` (ESM format)
 - Smart installer: `smart-install.js` (ESM format)
 - Worker service: `worker-service.cjs` (CJS format)
-- Search server: `search-server.mjs` (ESM format)
+- Search server: `search-server.cjs` (CJS format)
 - Viewer UI: `viewer.html` (self-contained HTML bundle)
 
 ### Build Scripts