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/config.ts

@@ -0,0 +1,10 @@
+import { resolve } from 'path'
+import { tmpdir } from 'os'
+
+export const config = {
+  port: parseInt(process.env.PORT || '8648', 10),
+  upstream: process.env.UPSTREAM || 'http://127.0.0.1:8642',
+  uploadDir: process.env.UPLOAD_DIR || resolve(tmpdir(), 'hermes-uploads'),
+  dataDir: resolve(__dirname, '..', 'data'),
+  corsOrigins: process.env.CORS_ORIGINS || '*',
+}