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/tui/test/fixture/tui-runtime.ts

@@ -0,0 +1,12 @@
+import { resolve, type Info, type Resolved } from "../../src/config"
+import { TuiKeybind } from "../../src/config/keybind"
+
+type ResolvedInput = Omit<Info, "attention" | "keybinds" | "leader_timeout"> & {
+  attention?: Partial<Resolved["attention"]>
+  keybinds?: Partial<TuiKeybind.Keybinds>
+  leader_timeout?: number
+}
+
+export function createTuiResolvedConfig(input: ResolvedInput = {}) {
+  return resolve(input, { terminalSuspend: process.platform !== "win32" })
+}