diff --git a/.gitignore b/.gitignore
index cd1e779b..4713b5e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,11 @@ node_modules
 .runtime/
 extracted-natives/
 
+# Adapter attachment cache (created at runtime by AttachmentStore when
+# running adapter tests or the feishu/telegram adapters locally)
+.lark-attachments/
+.tg-attachments/
+
 # Playwright MCP snapshots & logs
 .playwright-mcp/
 
diff --git a/desktop/scripts/scan-missing-imports.ts b/desktop/scripts/scan-missing-imports.ts
index 3f4db9b5..9cb4fc58 100644
--- a/desktop/scripts/scan-missing-imports.ts
+++ b/desktop/scripts/scan-missing-imports.ts
@@ -23,6 +23,11 @@ import path from 'node:path'
 
 const repoRoot = path.resolve(import.meta.dir, '../..')
 const srcRoot = path.join(repoRoot, 'src')
+const adaptersRoot = path.join(repoRoot, 'adapters')
+
+// 扫描 + 创建 stub 时允许的根目录。stub 写到这些目录之外会被拒绝，
+// 防止意外往 node_modules / 系统路径写文件。
+const ALLOWED_STUB_ROOTS = [srcRoot, adaptersRoot]
 
 const STUB_MARKER_TS = '// @generated stub from scan-missing-imports'
 const STUB_MARKER_TEXT = '<!-- @generated stub from scan-missing-imports -->'
@@ -143,11 +148,18 @@ function pickStubContent(stubPath: string): { content: string; marker: string }
   return { content: TS_STUB_CONTENT, marker: STUB_MARKER_TS }
 }
 
+async function* walkRoots(roots: string[]): AsyncGenerator<string> {
+  for (const root of roots) {
+    if (!existsSync(root)) continue
+    yield* walk(root)
+  }
+}
+
 async function main() {
   const missing = new Map<string, Set<string>>() // stubPath → set of importers
   let scannedFiles = 0
 
-  for await (const file of walk(srcRoot)) {
+  for await (const file of walkRoots([srcRoot, adaptersRoot])) {
     scannedFiles++
     let contents: string
     try {
@@ -184,9 +196,13 @@ async function main() {
   let createdCount = 0
   let skippedCount = 0
   for (const [stubPath, importers] of missing) {
-    // 安全检查：只在 src/ 下创建，且如果文件已存在但不是 stub 就跳过
-    if (!stubPath.startsWith(srcRoot + path.sep)) {
-      console.warn(`[scan] skip out-of-src stub target: ${stubPath}`)
+    // 安全检查：只在 ALLOWED_STUB_ROOTS（src/、adapters/）下创建，
+    // 且如果文件已存在但不是 stub 就跳过
+    const isAllowed = ALLOWED_STUB_ROOTS.some(
+      (root) => stubPath.startsWith(root + path.sep),
+    )
+    if (!isAllowed) {
+      console.warn(`[scan] skip out-of-tree stub target: ${stubPath}`)
       continue
     }
     const { content, marker } = pickStubContent(stubPath)
diff --git a/desktop/sidecars/claude-sidecar.ts b/desktop/sidecars/claude-sidecar.ts
index 363abc67..db070432 100644
--- a/desktop/sidecars/claude-sidecar.ts
+++ b/desktop/sidecars/claude-sidecar.ts
@@ -1,45 +1,137 @@
 /**
  * Claude Code 桌面端合并 sidecar 入口。
  *
- * 历史上 server 和 cli 是两个独立的 bun-compile 二进制，各自携带一份
- * ~55MB 的 bun runtime。把两份合并成一个二进制只保留一份 runtime，
- * 是 P0 之后剩余空间的最大优化点。
+ * 历史上 server / cli / IM adapters 是各自独立的进程。每个 bun-compile
+ * 二进制都要带一份 ~55MB 的 bun runtime，光这一项就重复占了 100MB+。
+ * 把所有运行模式合并到同一个二进制里，runtime 只保留一份；调用方通过
+ * 第一个 positional 参数选择模式：
  *
- * 调用约定（必须由调用方传第一个 positional 参数选择模式）：
- *
- *   claude-sidecar server --app-root <path> --host 127.0.0.1 --port 12345
- *   claude-sidecar cli    --app-root <path> [其它 CLI 参数...]
+ *   claude-sidecar server   --app-root <path> --host 127.0.0.1 --port 12345
+ *   claude-sidecar cli      --app-root <path> [其它 CLI 参数...]
+ *   claude-sidecar adapters --app-root <path> [--feishu] [--telegram]
  *
  * 任何模式都必须先做 process.env / process.argv 设置，再 await 进入相应的
- * 子模块树，原因和 server-launcher.ts / cli-launcher.ts 注释一致 ——
- * src/server/index.ts 顶层立刻读 process.argv，必须在它求值前 splice 掉
- * --app-root 和 mode 这些 launcher-only 参数。
+ * 子模块树。原因：src/server/index.ts、src/entrypoints/cli.tsx、以及
+ * adapters/feishu/index.ts 等顶层都会立即读 process.argv / process.env，
+ * 必须在它们求值前 splice 掉 --app-root、mode、--feishu/--telegram 这些
+ * launcher-only 参数。
  */
 
 const rawArgs = process.argv.slice(2)
 if (rawArgs.length === 0) {
-  console.error('claude-sidecar: missing mode argument (expected "server" or "cli")')
+  console.error('claude-sidecar: missing mode argument (expected "server", "cli" or "adapters")')
   process.exit(2)
 }
 const mode = rawArgs[0]!
 const restArgs = rawArgs.slice(1)
 
-const { appRoot, args } = parseLauncherArgs(restArgs)
-
-process.env.CLAUDE_APP_ROOT = appRoot
-process.env.CALLER_DIR ||= process.cwd()
-process.argv = [process.argv[0]!, process.argv[1]!, ...args]
-
-await import('../../preload.ts')
-
-if (mode === 'server') {
-  const { startServer } = await import('../../src/server/index.ts')
-  startServer()
-} else if (mode === 'cli') {
-  await import('../../src/entrypoints/cli.tsx')
+if (mode === 'adapters') {
+  await runAdapters(restArgs)
 } else {
-  console.error(`claude-sidecar: unknown mode "${mode}" (expected "server" or "cli")`)
-  process.exit(2)
+  const { appRoot, args } = parseLauncherArgs(restArgs)
+
+  process.env.CLAUDE_APP_ROOT = appRoot
+  process.env.CALLER_DIR ||= process.cwd()
+  process.argv = [process.argv[0]!, process.argv[1]!, ...args]
+
+  await import('../../preload.ts')
+
+  if (mode === 'server') {
+    const { startServer } = await import('../../src/server/index.ts')
+    startServer()
+  } else if (mode === 'cli') {
+    await import('../../src/entrypoints/cli.tsx')
+  } else {
+    console.error(`claude-sidecar: unknown mode "${mode}" (expected "server", "cli" or "adapters")`)
+    process.exit(2)
+  }
+}
+
+async function runAdapters(rawArgs: string[]): Promise<void> {
+  // adapters 模式的参数解析独立于 server/cli —— 这里只接受 --feishu /
+  // --telegram 选择启用哪个适配器，再加可选的 --app-root（透传给
+  // adapters/common/config.ts 内的 process.env 读取）。
+  let appRoot: string | null = process.env.CLAUDE_APP_ROOT ?? null
+  let enableFeishu = false
+  let enableTelegram = false
+
+  for (let i = 0; i < rawArgs.length; i++) {
+    const arg = rawArgs[i]
+    if (arg === '--app-root') {
+      appRoot = rawArgs[i + 1] ?? null
+      i += 1
+      continue
+    }
+    if (arg === '--feishu') {
+      enableFeishu = true
+      continue
+    }
+    if (arg === '--telegram') {
+      enableTelegram = true
+      continue
+    }
+    console.warn(`claude-sidecar adapters: ignoring unknown arg "${arg}"`)
+  }
+
+  if (!enableFeishu && !enableTelegram) {
+    console.error(
+      'claude-sidecar adapters: must enable at least one of --feishu / --telegram',
+    )
+    process.exit(2)
+  }
+
+  if (appRoot) {
+    process.env.CLAUDE_APP_ROOT = appRoot
+  }
+  process.env.CALLER_DIR ||= process.cwd()
+
+  await import('../../preload.ts')
+
+  // 在 import adapter 之前先用同一份 loadConfig() 检查凭据。adapter 的
+  // top-level 代码里已经有 if (!cred) process.exit(1)，但那会把整个
+  // 进程拖死 —— 包括另一个本来正常的 adapter。这里提前 gate 一下，
+  // 缺凭据的 adapter 直接跳过、不 import。
+  const { loadConfig } = await import('../../adapters/common/config.ts')
+  const config = loadConfig()
+
+  let started = 0
+
+  if (enableFeishu) {
+    if (!config.feishu.appId || !config.feishu.appSecret) {
+      console.warn(
+        '[claude-sidecar] --feishu requested but FEISHU_APP_ID / FEISHU_APP_SECRET missing in env or ~/.claude/adapters.json — skipping',
+      )
+    } else {
+      console.log('[claude-sidecar] starting Feishu adapter')
+      // 副作用 import：feishu/index.ts 顶层会自动 new WSClient + start()
+      await import('../../adapters/feishu/index.ts')
+      started += 1
+    }
+  }
+
+  if (enableTelegram) {
+    if (!config.telegram.botToken) {
+      console.warn(
+        '[claude-sidecar] --telegram requested but TELEGRAM_BOT_TOKEN missing in env or ~/.claude/adapters.json — skipping',
+      )
+    } else {
+      console.log('[claude-sidecar] starting Telegram adapter')
+      // 副作用 import：telegram/index.ts 顶层会自动 bot.start()
+      await import('../../adapters/telegram/index.ts')
+      started += 1
+    }
+  }
+
+  if (started === 0) {
+    console.error(
+      '[claude-sidecar] no adapter could be started — check credentials in env or ~/.claude/adapters.json',
+    )
+    process.exit(1)
+  }
+
+  // 让进程保持存活：两个 adapter 都通过 long-lived WebSocket（Lark WSClient
+  // / grammY long-polling）持有 event loop，自然不会退出。这里不需要额外
+  // setInterval 兜底。两个 adapter 自己注册的 SIGINT handler 都会触发。
 }
 
 function parseLauncherArgs(rawArgs: string[]): { appRoot: string; args: string[] } {