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

patches/@standard-community%2Fstandard-openapi@0.2.9.patch

@@ -0,0 +1,16 @@
+diff --git a/dist/vendors/convert.js b/dist/vendors/convert.js
+index 0d615eebfd7cd646937ec1b29f8332db73586ec1..7b146f903c07a9377d676753691cba67781879be 100644
+--- a/dist/vendors/convert.js
++++ b/dist/vendors/convert.js
+@@ -74,7 +74,10 @@ function convertToOpenAPISchema(jsonSchema, context) {
+       $ref: `#/components/schemas/${id}`
+     };
+   } else if (_jsonSchema.$ref) {
+-    const { $ref, $defs } = _jsonSchema;
++    const { $ref, $defs, ...rest } = _jsonSchema;
++    if ($ref.includes("://")) {
++      return Object.keys(rest).length > 0 ? rest : { type: "string" };
++    }
+     const ref = $ref.split("/").pop();
+     context.components.schemas = {
+       ...context.components.schemas,