feat: add AI enhancement feature to settings and board views

- Introduced AIEnhancementSection to settings view for selecting enhancement models.
- Implemented enhancement functionality in AddFeatureDialog and EditFeatureDialog, allowing users to enhance feature descriptions with AI.
- Added dropdown menu for selecting enhancement modes (improve, technical, simplify, acceptance).
- Integrated new API endpoints for enhancing text using Claude AI.
- Updated navigation to include AI enhancement section in settings.

This enhances user experience by providing AI-powered text enhancement capabilities directly within the application.

apps/server/src/index.ts

@@ -22,6 +22,7 @@ import { createAgentRoutes } from "./routes/agent/index.js";
 import { createSessionsRoutes } from "./routes/sessions/index.js";
 import { createFeaturesRoutes } from "./routes/features/index.js";
 import { createAutoModeRoutes } from "./routes/auto-mode/index.js";
+import { createEnhancePromptRoutes } from "./routes/enhance-prompt/index.js";
 import { createWorktreeRoutes } from "./routes/worktree/index.js";
 import { createGitRoutes } from "./routes/git/index.js";
 import { createSetupRoutes } from "./routes/setup/index.js";
@@ -125,6 +126,7 @@ app.use("/api/agent", createAgentRoutes(agentService, events));
 app.use("/api/sessions", createSessionsRoutes(agentService));
 app.use("/api/features", createFeaturesRoutes(featureLoader));
 app.use("/api/auto-mode", createAutoModeRoutes(autoModeService));
+app.use("/api/enhance-prompt", createEnhancePromptRoutes());
 app.use("/api/worktree", createWorktreeRoutes());
 app.use("/api/git", createGitRoutes());
 app.use("/api/setup", createSetupRoutes());