Refactor CLI Config Manager and Add Provider Model Routes

- Removed deprecated constants and functions from cli-config-manager.ts.
- Introduced new provider model presets in litellm-provider-models.ts for better organization and management of model information.
- Created provider-routes.ts to handle API endpoints for retrieving provider information and models.
- Added integration tests for provider routes to ensure correct functionality and response structure.
- Implemented unit tests for settings persistence functions, covering various scenarios and edge cases.
- Enhanced error handling and validation in the new routes and settings functions.

ccw/src/core/routes/cli-routes.ts

@@ -29,8 +29,7 @@ import {
   loadCliConfig,
   getToolConfig,
   updateToolConfig,
-  getFullConfigResponse,
-  PREDEFINED_MODELS
+  getFullConfigResponse
 } from '../../tools/cli-config-manager.js';
 import {
   loadClaudeCliTools,

ccw/src/core/routes/provider-routes.ts

@@ -0,0 +1,78 @@
+/**
+ * Provider Reference Routes Module
+ * Handles read-only provider model reference API endpoints
+ */
+
+import type { RouteContext } from './types.js';
+import {
+  PROVIDER_MODELS,
+  getAllProviders,
+  getProviderModels
+} from '../../config/provider-models.js';
+
+/**
+ * Handle Provider Reference routes
+ * @returns true if route was handled, false otherwise
+ */
+export async function handleProviderRoutes(ctx: RouteContext): Promise<boolean> {
+  const { pathname, req, res } = ctx;
+
+  // ========== GET ALL PROVIDERS ==========
+  // GET /api/providers
+  if (pathname === '/api/providers' && req.method === 'GET') {
+    try {
+      const providers = getAllProviders().map(id => ({
+        id,
+        name: PROVIDER_MODELS[id].name,
+        modelCount: PROVIDER_MODELS[id].models.length
+      }));
+
+      res.writeHead(200, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ success: true, providers }));
+    } catch (err) {
+      res.writeHead(500, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({
+        success: false,
+        error: (err as Error).message
+      }));
+    }
+    return true;
+  }
+
+  // ========== GET MODELS FOR PROVIDER ==========
+  // GET /api/providers/:provider/models
+  const providerMatch = pathname.match(/^\/api\/providers\/([^\/]+)\/models$/);
+  if (providerMatch && req.method === 'GET') {
+    const provider = decodeURIComponent(providerMatch[1]);
+
+    try {
+      const models = getProviderModels(provider);
+
+      if (models.length === 0) {
+        res.writeHead(404, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({
+          success: false,
+          error: `Provider not found: ${provider}`
+        }));
+        return true;
+      }
+
+      res.writeHead(200, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({
+        success: true,
+        provider,
+        providerName: PROVIDER_MODELS[provider].name,
+        models
+      }));
+    } catch (err) {
+      res.writeHead(500, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({
+        success: false,
+        error: (err as Error).message
+      }));
+    }
+    return true;
+  }
+
+  return false;
+}