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/upload.ts

@@ -0,0 +1,52 @@
+import Router from '@koa/router'
+import { randomBytes } from 'crypto'
+import { mkdir, writeFile } from 'fs/promises'
+import { config } from '../config'
+
+export const uploadRoutes = new Router()
+
+uploadRoutes.post('/upload', async (ctx) => {
+  const contentType = ctx.get('content-type') || ''
+  if (!contentType.startsWith('multipart/form-data')) {
+    ctx.status = 400
+    ctx.body = { error: 'Expected multipart/form-data' }
+    return
+  }
+
+  const boundary = '--' + contentType.split('boundary=')[1]
+  if (!boundary || boundary === '--undefined') {
+    ctx.status = 400
+    ctx.body = { error: 'Missing boundary' }
+    return
+  }
+
+  await mkdir(config.uploadDir, { recursive: true })
+
+  // Read raw body
+  const chunks: Buffer[] = []
+  for await (const chunk of ctx.req) chunks.push(chunk)
+  const body = Buffer.concat(chunks).toString('latin1')
+  const parts = body.split(boundary).slice(1, -1)
+
+  const results: { name: string; path: string }[] = []
+
+  for (const part of parts) {
+    const headerEnd = part.indexOf('\r\n\r\n')
+    if (headerEnd === -1) continue
+    const header = part.substring(0, headerEnd)
+    const data = part.substring(headerEnd + 4, part.length - 2)
+
+    const filenameMatch = header.match(/filename="([^"]+)"/)
+    if (!filenameMatch) continue
+
+    const filename = filenameMatch[1]
+    const ext = filename.includes('.') ? '.' + filename.split('.').pop() : ''
+    const savedName = randomBytes(8).toString('hex') + ext
+    const savedPath = `${config.uploadDir}/${savedName}`
+
+    await writeFile(savedPath, Buffer.from(data, 'binary'))
+    results.push({ name: filename, path: savedPath })
+  }
+
+  ctx.body = { files: results }
+})