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/opencode/test/lsp/launch.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, test } from "bun:test"
+import fs from "fs/promises"
+import path from "path"
+import { spawn } from "../../src/lsp/launch"
+import { tmpdir } from "../fixture/fixture"
+
+describe("lsp.launch", () => {
+  test("spawns cmd scripts with spaces on Windows", async () => {
+    if (process.platform !== "win32") return
+
+    await using tmp = await tmpdir()
+    const dir = path.join(tmp.path, "with space")
+    const file = path.join(dir, "echo cmd.cmd")
+
+    await fs.mkdir(dir, { recursive: true })
+    await Bun.write(file, "@echo off\r\nif %~1==--stdio exit /b 0\r\nexit /b 7\r\n")
+
+    const proc = spawn(file, ["--stdio"])
+
+    expect(await proc.exited).toBe(0)
+  })
+})