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/llm/test/recorded-websocket.ts

@@ -0,0 +1,26 @@
+import { HttpRecorderInternal } from "@opencode-ai/http-recorder/internal"
+import { Effect, Layer } from "effect"
+import { WebSocketExecutor } from "../src/route"
+import type { Service as WebSocketExecutorService } from "../src/route/transport/websocket"
+
+const liveWebSocket = WebSocketExecutor.open
+
+export const webSocketCassetteLayer = (
+  cassette: string,
+  input: { readonly metadata?: Record<string, unknown>; readonly mode: HttpRecorderInternal.RecordReplayMode },
+): Layer.Layer<WebSocketExecutorService, never, HttpRecorderInternal.Cassette.Service> =>
+  Layer.effect(
+    WebSocketExecutor.Service,
+    Effect.gen(function* () {
+      const cassetteService = yield* HttpRecorderInternal.Cassette.Service
+      const executor = yield* HttpRecorderInternal.makeWebSocketExecutor({
+        name: cassette,
+        mode: input.mode,
+        metadata: input.metadata,
+        cassette: cassetteService,
+        live: { open: liveWebSocket },
+        compareClientMessagesAsJson: true,
+      })
+      return WebSocketExecutor.Service.of(executor)
+    }),
+  )