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/script/build-node.ts

@@ -0,0 +1,31 @@
+#!/usr/bin/env bun
+
+import { Script } from "@opencode-ai/script"
+import path from "path"
+import { fileURLToPath } from "url"
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const dir = path.resolve(__dirname, "..")
+
+process.chdir(dir)
+
+const generated = await import("./generate.ts")
+
+await Bun.build({
+  target: "node",
+  entrypoints: ["./src/node.ts"],
+  outdir: "./dist/node",
+  format: "esm",
+  sourcemap: "linked",
+  external: ["jsonc-parser", "@lydell/node-pty"],
+  define: {
+    OPENCODE_MODELS_DEV: generated.modelsData,
+    OPENCODE_CHANNEL: `'${Script.channel}'`,
+  },
+  files: {
+    "opencode-web-ui.gen.ts": "",
+  },
+})
+
+console.log("Build complete")