diff --git a/src/web-server/routes/account-routes.ts b/src/web-server/routes/account-routes.ts
new file mode 100644
index 00000000..848383f5
--- /dev/null
+++ b/src/web-server/routes/account-routes.ts
@@ -0,0 +1,68 @@
+/**
+ * Account Routes - CRUD operations for Claude accounts (profiles.json)
+ *
+ * Separated from profile-routes.ts to avoid dual-mounting conflicts.
+ */
+
+import { Router, Request, Response } from 'express';
+import * as fs from 'fs';
+import * as path from 'path';
+import { getCcsDir } from '../../utils/config-manager';
+
+const router = Router();
+
+/**
+ * GET /api/accounts - List accounts from profiles.json
+ */
+router.get('/', (_req: Request, res: Response): void => {
+  try {
+    const profilesPath = path.join(getCcsDir(), 'profiles.json');
+
+    if (!fs.existsSync(profilesPath)) {
+      res.json({ accounts: [], default: null });
+      return;
+    }
+
+    const data = JSON.parse(fs.readFileSync(profilesPath, 'utf8'));
+    const accounts = Object.entries(data.profiles || {}).map(([name, meta]) => {
+      const metadata = meta as Record<string, unknown>;
+      return {
+        name,
+        ...metadata,
+      };
+    });
+
+    res.json({ accounts, default: data.default || null });
+  } catch (error) {
+    res.status(500).json({ error: (error as Error).message });
+  }
+});
+
+/**
+ * POST /api/accounts/default - Set default account
+ */
+router.post('/default', (req: Request, res: Response): void => {
+  try {
+    const { name } = req.body;
+
+    if (!name) {
+      res.status(400).json({ error: 'Missing required field: name' });
+      return;
+    }
+
+    const profilesPath = path.join(getCcsDir(), 'profiles.json');
+
+    const data = fs.existsSync(profilesPath)
+      ? JSON.parse(fs.readFileSync(profilesPath, 'utf8'))
+      : { profiles: {} };
+
+    data.default = name;
+    fs.writeFileSync(profilesPath, JSON.stringify(data, null, 2) + '\n');
+
+    res.json({ default: name });
+  } catch (error) {
+    res.status(500).json({ error: (error as Error).message });
+  }
+});
+
+export default router;
diff --git a/src/web-server/routes/cliproxy-stats-routes.ts b/src/web-server/routes/cliproxy-stats-routes.ts
index c1b4a676..00917d40 100644
--- a/src/web-server/routes/cliproxy-stats-routes.ts
+++ b/src/web-server/routes/cliproxy-stats-routes.ts
@@ -19,10 +19,9 @@ import { checkCliproxyUpdate } from '../../cliproxy/binary-manager';
 const router = Router();
 
 /**
- * GET /api/cliproxy/stats - Get CLIProxyAPI usage statistics
- * Returns: CliproxyStats or error if proxy not running
+ * Shared handler for stats/usage endpoint
  */
-router.get('/stats', async (_req: Request, res: Response): Promise<void> => {
+const handleStatsRequest = async (_req: Request, res: Response): Promise<void> => {
   try {
     // Check if proxy is running first
     const running = await isCliproxyRunning();
@@ -48,7 +47,18 @@ router.get('/stats', async (_req: Request, res: Response): Promise<void> => {
   } catch (error) {
     res.status(500).json({ error: (error as Error).message });
   }
-});
+};
+
+/**
+ * GET /api/cliproxy/stats - Get CLIProxyAPI usage statistics
+ * Returns: CliproxyStats or error if proxy not running
+ */
+router.get('/stats', handleStatsRequest);
+
+/**
+ * GET /api/cliproxy/usage - Alias for /stats (frontend compatibility)
+ */
+router.get('/usage', handleStatsRequest);
 
 /**
  * GET /api/cliproxy/status - Check CLIProxyAPI running status
diff --git a/src/web-server/routes/index.ts b/src/web-server/routes/index.ts
index 819cb717..6b967ac3 100644
--- a/src/web-server/routes/index.ts
+++ b/src/web-server/routes/index.ts
@@ -9,6 +9,7 @@ import { Router } from 'express';
 
 // Import domain routers
 import profileRoutes from './profile-routes';
+import accountRoutes from './account-routes';
 import configRoutes from './config-routes';
 import healthRoutes from './health-routes';
 import providerRoutes from './provider-routes';
@@ -28,7 +29,7 @@ export const apiRoutes = Router();
 // Profile CRUD, settings management, presets, accounts
 apiRoutes.use('/profiles', profileRoutes);
 apiRoutes.use('/settings', settingsRoutes);
-apiRoutes.use('/accounts', profileRoutes);
+apiRoutes.use('/accounts', accountRoutes);
 
 // ==================== Unified Config ====================
 // Config format, migration
diff --git a/src/web-server/routes/profile-routes.ts b/src/web-server/routes/profile-routes.ts
index 311d5426..b7943bea 100644
--- a/src/web-server/routes/profile-routes.ts
+++ b/src/web-server/routes/profile-routes.ts
@@ -1,13 +1,11 @@
 /**
- * Profile Routes - CRUD operations for user profiles and accounts
+ * Profile Routes - CRUD operations for user profiles
  *
  * Uses unified config (config.yaml) when available, falls back to legacy (config.json).
+ * Note: Account routes have been moved to account-routes.ts
  */
 
 import { Router, Request, Response } from 'express';
-import * as fs from 'fs';
-import * as path from 'path';
-import { getCcsDir } from '../../utils/config-manager';
 import { isReservedName, RESERVED_PROFILE_NAMES } from '../../config/reserved-names';
 import { createApiProfile, removeApiProfile } from '../../api/services/profile-writer';
 import { apiProfileExists, listApiProfiles } from '../../api/services/profile-reader';
@@ -20,15 +18,19 @@ const router = Router();
 /**
  * GET /api/profiles - List all profiles
  */
-router.get('/', (_req: Request, res: Response) => {
-  const result = listApiProfiles();
-  // Map isConfigured -> configured for UI compatibility
-  const profiles = result.profiles.map((p) => ({
-    name: p.name,
-    settingsPath: p.settingsPath,
-    configured: p.isConfigured,
-  }));
-  res.json({ profiles });
+router.get('/', (_req: Request, res: Response): void => {
+  try {
+    const result = listApiProfiles();
+    // Map isConfigured -> configured for UI compatibility
+    const profiles = result.profiles.map((p) => ({
+      name: p.name,
+      settingsPath: p.settingsPath,
+      configured: p.isConfigured,
+    }));
+    res.json({ profiles });
+  } catch (error) {
+    res.status(500).json({ error: (error as Error).message });
+  }
 });
 
 /**
@@ -117,52 +119,4 @@ router.delete('/:name', (req: Request, res: Response): void => {
   res.json({ name, deleted: true });
 });
 
-// ==================== Accounts ====================
-
-/**
- * GET /api/accounts - List accounts from profiles.json
- */
-router.get('/accounts', (_req: Request, res: Response): void => {
-  const profilesPath = path.join(getCcsDir(), 'profiles.json');
-
-  if (!fs.existsSync(profilesPath)) {
-    res.json({ accounts: [], default: null });
-    return;
-  }
-
-  const data = JSON.parse(fs.readFileSync(profilesPath, 'utf8'));
-  const accounts = Object.entries(data.profiles || {}).map(([name, meta]) => {
-    const metadata = meta as Record<string, unknown>;
-    return {
-      name,
-      ...metadata,
-    };
-  });
-
-  res.json({ accounts, default: data.default || null });
-});
-
-/**
- * POST /api/accounts/default - Set default account
- */
-router.post('/accounts/default', (req: Request, res: Response): void => {
-  const { name } = req.body;
-
-  if (!name) {
-    res.status(400).json({ error: 'Missing required field: name' });
-    return;
-  }
-
-  const profilesPath = path.join(getCcsDir(), 'profiles.json');
-
-  const data = fs.existsSync(profilesPath)
-    ? JSON.parse(fs.readFileSync(profilesPath, 'utf8'))
-    : { profiles: {} };
-
-  data.default = name;
-  fs.writeFileSync(profilesPath, JSON.stringify(data, null, 2) + '\n');
-
-  res.json({ default: name });
-});
-
 export default router;