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/storybook/.storybook/mocks/app/context/command.ts

@@ -0,0 +1,26 @@
+const keybinds: Record<string, string> = {
+  "file.attach": "mod+u",
+  "prompt.mode.shell": "mod+shift+x",
+  "prompt.mode.normal": "mod+shift+e",
+  "permissions.autoaccept": "mod+shift+a",
+  "agent.cycle": "mod+.",
+  "model.choose": "mod+m",
+  "model.variant.cycle": "mod+shift+m",
+}
+
+export function formatKeybind(config: string) {
+  return config === "none" ? "" : config
+}
+
+export function useCommand() {
+  return {
+    options: [],
+    register() {
+      return () => undefined
+    },
+    trigger() {},
+    keybind(id: string) {
+      return keybinds[id]
+    },
+  }
+}