feat: 品牌替换 + 启动优化 + AGENTS.md 模板定制

- 品牌替换：OpenCode/opencode → AirCoding/aircoding（16+ 文件）
- Logo ASCII art：修复 left/right 行数不匹配导致的启动崩溃
- 启动诊断：添加 OPENCODE_PRINT_TIMING 计时探针
- dev 模式默认 --pure 跳过外部插件加载
- AGENTS.md 模板：追加 AirCoding 多 Agent 专项段落
- architect prompt + plugin：强化 AGENTS.md 产出验证

packages/cli/src/commands/handlers/service/stop.ts

@@ -0,0 +1,11 @@
+import * as Effect from "effect/Effect"
+import { Commands } from "../../commands"
+import { Runtime } from "../../../framework/runtime"
+import { Daemon } from "../../../services/daemon"
+
+export default Runtime.handler(
+  Commands.commands.service.commands.stop,
+  Effect.fn("cli.service.stop")(function* () {
+    yield* (yield* Daemon.Service).stop()
+  }),
+)