chore: bump version to 7.2.7

- Enhance smart-search with advanced MCP integration
- Add GEMINI_API_KEY configuration support in codexlens
- Update MCP server with new tool handlers
- Add tests for smart-search MCP usage
- Update documentation

ccw/frontend/src/components/codexlens/SettingsTab.test.tsx

@@ -61,6 +61,7 @@ const mockConfig: CodexLensConfig = {
 const mockEnv: Record<string, string> = {
   CODEXLENS_EMBEDDING_BACKEND: 'local',
   CODEXLENS_EMBEDDING_MODEL: 'fast',
+  CODEXLENS_AUTO_EMBED_MISSING: 'true',
   CODEXLENS_USE_GPU: 'true',
   CODEXLENS_RERANKER_ENABLED: 'true',
   CODEXLENS_RERANKER_BACKEND: 'onnx',
@@ -141,6 +142,7 @@ describe('SettingsTab', () => {
       expect(screen.getByText(/Concurrency/i)).toBeInTheDocument();
       expect(screen.getByText(/Cascade/i)).toBeInTheDocument();
       expect(screen.getByText(/Chunking/i)).toBeInTheDocument();
+      expect(screen.getByText(/Auto Build Missing Vectors/i)).toBeInTheDocument();
     });
 
     it('should initialize index dir from config', () => {

ccw/frontend/src/components/codexlens/envVarSchema.ts

@@ -56,6 +56,13 @@ export const envVarGroupsSchema: EnvVarGroupsSchema = {
           },
         ],
       },
+      CODEXLENS_AUTO_EMBED_MISSING: {
+        key: 'CODEXLENS_AUTO_EMBED_MISSING',
+        labelKey: 'codexlens.envField.autoEmbedMissing',
+        type: 'checkbox',
+        default: 'true',
+        settingsPath: 'embedding.auto_embed_missing',
+      },
       CODEXLENS_USE_GPU: {
         key: 'CODEXLENS_USE_GPU',
         labelKey: 'codexlens.envField.useGpu',