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/desktop/scripts/copy-bundles.ts

@@ -0,0 +1,12 @@
+import { $ } from "bun"
+import * as path from "node:path"
+
+import { RUST_TARGET } from "./utils"
+
+if (!RUST_TARGET) throw new Error("RUST_TARGET not defined")
+
+const BUNDLE_DIR = "dist"
+const BUNDLES_OUT_DIR = path.join(process.cwd(), "dist/bundles")
+
+await $`mkdir -p ${BUNDLES_OUT_DIR}`
+await $`cp -r ${BUNDLE_DIR}/* ${BUNDLES_OUT_DIR}`