fix: 使用127.0.0.1替代localhost以确保IPv4连接，避免IPv6解析问题

Author: catlog22

.claude/commands/workflow/analyze-with-file.md

@@ -83,7 +83,7 @@ When `--yes` or `-y`: Auto-confirm exploration decisions, use recommended analys
 
 Codebase exploration FIRST, then CLI analysis.
 
-**Step 1: Codebase Exploration** (cli-explore-agent, parallel up to 4)
+**Step 1: Codebase Exploration** (cli-explore-agent, parallel up to 6)
 
 - **Single**: General codebase analysis → `{sessionFolder}/exploration-codebase.json`
 - **Multi-perspective**: Parallel per-perspective → `{sessionFolder}/explorations/{perspective}.json`

ccw/frontend/vite.config.ts

@@ -14,7 +14,8 @@ const basePath = process.env.VITE_BASE_URL || '/'
 
 // Backend target for Vite proxy (used when directly opening the Vite dev server port).
 // In `ccw view`, this is set to the dashboard server port so /api and /ws route correctly.
-const backendHost = process.env.VITE_BACKEND_HOST || 'localhost'
+// Use 127.0.0.1 instead of localhost to ensure IPv4 connection (avoid IPv6 resolution issues)
+const backendHost = process.env.VITE_BACKEND_HOST || '127.0.0.1'
 const backendPort = Number(process.env.VITE_BACKEND_PORT || '3456')
 const backendHttpTarget = `http://${backendHost}:${backendPort}`
 const backendWsTarget = `ws://${backendHost}:${backendPort}`

ccw/src/core/server.ts

@@ -771,7 +771,7 @@ export async function startServer(options: ServerOptions = {}): Promise<http.Ser
         }
 
         // Otherwise, proxy to Vite dev server
-        const reactUrl = `http://localhost:${reactPort}${pathname}${url.search}`;
+        const reactUrl = `http://127.0.0.1:${reactPort}${pathname}${url.search}`;
 
         try {
           // Convert headers to plain object for fetch
@@ -783,7 +783,7 @@ export async function startServer(options: ServerOptions = {}): Promise<http.Ser
               proxyHeaders[key] = value.join(', ');
             }
           }
-          proxyHeaders['host'] = `localhost:${reactPort}`;
+          proxyHeaders['host'] = `127.0.0.1:${reactPort}`;
 
           const reactResponse = await fetch(reactUrl, {
             method: req.method,