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

sdks/vscode/esbuild.js

@@ -0,0 +1,54 @@
+const esbuild = require("esbuild")
+
+const production = process.argv.includes("--production")
+const watch = process.argv.includes("--watch")
+
+/**
+ * @type {import('esbuild').Plugin}
+ */
+const esbuildProblemMatcherPlugin = {
+  name: "esbuild-problem-matcher",
+
+  setup(build) {
+    build.onStart(() => {
+      console.log("[watch] build started")
+    })
+    build.onEnd((result) => {
+      result.errors.forEach(({ text, location }) => {
+        console.error(`✘ [ERROR] ${text}`)
+        console.error(`    ${location.file}:${location.line}:${location.column}:`)
+      })
+      console.log("[watch] build finished")
+    })
+  },
+}
+
+async function main() {
+  const ctx = await esbuild.context({
+    entryPoints: ["src/extension.ts"],
+    bundle: true,
+    format: "cjs",
+    minify: production,
+    sourcemap: !production,
+    sourcesContent: false,
+    platform: "node",
+    outfile: "dist/extension.js",
+    external: ["vscode"],
+    logLevel: "silent",
+    plugins: [
+      /* add to the end of plugins array */
+      esbuildProblemMatcherPlugin,
+    ],
+  })
+  if (watch) {
+    await ctx.watch()
+  } else {
+    await ctx.rebuild()
+    await ctx.dispose()
+  }
+}
+
+main().catch((e) => {
+  console.error(e)
+  process.exit(1)
+})