refactor: restructure project for multi-agent extensibility

- Migrate source to packages/client and packages/server directories
- Namespace all Hermes-specific code under hermes/ subdirectories
  (api/hermes/, components/hermes/, views/hermes/, stores/hermes/)
- Add hermes.* route names and /hermes/* path prefixes
- Upgrade @koa/router to v15, adapt path-to-regexp v8 syntax
- Fix proxy path rewriting: /api/hermes/v1/* → /v1/*, /api/hermes/* → /api/*
- Fix frontend API paths to match backend /api/hermes/* routes
- Fix WebSocket terminal path to /api/hermes/terminal
- Add proxyMiddleware for reliable unmatched route proxying
- Add profiles route module and hermes-cli profile commands
- Update CLAUDE.md development guide with new architecture
- Add Chinese README (README_zh.md)
- Add Web Terminal feature to README

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/server/src/routes/hermes/proxy.ts

@@ -0,0 +1,17 @@
+import Router from '@koa/router'
+import type { Context, Next } from 'koa'
+import { proxy } from './proxy-handler'
+
+export const proxyRoutes = new Router()
+
+// Proxy unmatched /api/hermes/* and /v1/* to upstream Hermes API
+proxyRoutes.all('/api/hermes/{*any}', proxy)
+proxyRoutes.all('/v1/{*any}', proxy)
+
+// Also register as middleware so it works reliably with nested .use()
+export async function proxyMiddleware(ctx: Context, next: Next) {
+  if (ctx.path.startsWith('/api/hermes/') || ctx.path.startsWith('/v1/')) {
+    return proxy(ctx)
+  }
+  await next()
+}