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/core/test/plugin/provider-togetherai.test.ts

@@ -0,0 +1,97 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { TogetherAIPlugin } from "@opencode-ai/core/plugin/provider/togetherai"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+describe("TogetherAIPlugin", () => {
+  it.effect("creates a TogetherAI SDK for @ai-sdk/togetherai", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(TogetherAIPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("togetherai", "model"), package: "@ai-sdk/togetherai", options: { name: "togetherai" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("matches the old bundled provider package exactly", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(TogetherAIPlugin)
+
+      const ignored = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("togetherai", "model"),
+          package: "file:///tmp/@ai-sdk/togetherai-provider.js",
+          options: { name: "togetherai" },
+        },
+        {},
+      )
+      expect(ignored.sdk).toBeUndefined()
+
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("togetherai", "model"), package: "@ai-sdk/togetherai", options: { name: "togetherai" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("creates bundled TogetherAI SDKs for custom provider IDs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const observed: string[] = []
+      yield* plugin.add(TogetherAIPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              observed.push(evt.sdk.languageModel("model").provider)
+            }),
+        }),
+      })
+
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-togetherai", "model"),
+          package: "@ai-sdk/togetherai",
+          options: { name: "custom-togetherai" },
+        },
+        {},
+      )
+
+      expect(observed).toEqual(["togetherai.chat"])
+    }),
+  )
+
+  it.effect("defaults language selection to sdk.languageModel with the model API ID", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(TogetherAIPlugin)
+
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("togetherai", "meta-llama/Llama-3.3-70B-Instruct-Turbo"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+
+      expect(result.language).toBeUndefined()
+      expect(calls).toEqual([])
+      expect(result.language ?? fakeSelectorSdk(calls).languageModel(result.model.api.id)).toBeDefined()
+      expect(calls).toEqual(["languageModel:meta-llama/Llama-3.3-70B-Instruct-Turbo"])
+    }),
+  )
+})