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/runtime.test.tsx

@@ -0,0 +1,37 @@
+import { expect, test } from "bun:test"
+import { testRender } from "@opentui/solid"
+import { abbreviateHome } from "../src/runtime"
+import { TuiPathsProvider, useTuiPaths } from "../src/context/runtime"
+
+test("abbreviates paths within home boundaries", () => {
+  expect(abbreviateHome("/home/test", "/home/test")).toBe("~")
+  expect(abbreviateHome("/home/test/project", "/home/test")).toBe("~/project")
+  expect(abbreviateHome("/home/tester/project", "/home/test")).toBe("/home/tester/project")
+  expect(abbreviateHome("/tmp/project", "/home/test")).toBe("/tmp/project")
+})
+
+test("provides focused immutable runtime inputs", async () => {
+  let paths: ReturnType<typeof useTuiPaths>
+
+  function Runtime() {
+    paths = useTuiPaths()
+    return <text>{paths.cwd}</text>
+  }
+
+  const app = await testRender(
+    () => (
+      <TuiPathsProvider value={{ cwd: "/work", home: "/home/test", state: "/state", worktree: "/worktree" }}>
+        <Runtime />
+      </TuiPathsProvider>
+    ),
+    { width: 40, height: 3 },
+  )
+
+  try {
+    await app.renderOnce()
+    expect(app.captureCharFrame()).toContain("/work")
+    expect(Object.isFrozen(paths!)).toBe(true)
+  } finally {
+    app.renderer.destroy()
+  }
+})