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/opencode/test/skill/discovery.test.ts

@@ -0,0 +1,139 @@
+import { describe, expect, beforeAll, afterAll } from "bun:test"
+import { FSUtil } from "@opencode-ai/core/fs-util"
+import { Effect, Layer } from "effect"
+import { Discovery } from "../../src/skill/discovery"
+import { Global } from "@opencode-ai/core/global"
+import { Filesystem } from "@/util/filesystem"
+import { rm } from "fs/promises"
+import path from "path"
+import { testEffect } from "../lib/effect"
+
+let CLOUDFLARE_SKILLS_URL: string
+let server: ReturnType<typeof Bun.serve>
+let downloadCount = 0
+
+const fixturePath = path.join(import.meta.dir, "../fixture/skills")
+const cacheDir = path.join(Global.Path.cache, "skills")
+const it = testEffect(Layer.mergeAll(Discovery.defaultLayer, FSUtil.defaultLayer))
+
+beforeAll(async () => {
+  await rm(cacheDir, { recursive: true, force: true })
+
+  server = Bun.serve({
+    port: 0,
+    async fetch(req) {
+      const url = new URL(req.url)
+
+      // route /.well-known/skills/* to the fixture directory
+      if (url.pathname.startsWith("/.well-known/skills/")) {
+        const filePath = url.pathname.replace("/.well-known/skills/", "")
+        const fullPath = path.join(fixturePath, filePath)
+
+        if (await Filesystem.exists(fullPath)) {
+          if (!fullPath.endsWith("index.json")) {
+            downloadCount++
+          }
+          return new Response(Bun.file(fullPath))
+        }
+      }
+
+      return new Response("Not Found", { status: 404 })
+    },
+  })
+
+  CLOUDFLARE_SKILLS_URL = `http://localhost:${server.port}/.well-known/skills/`
+})
+
+afterAll(async () => {
+  void server?.stop()
+  await rm(cacheDir, { recursive: true, force: true })
+})
+
+describe("Discovery.pull", () => {
+  it.live("downloads skills from cloudflare url", () =>
+    Effect.gen(function* () {
+      const fsys = yield* FSUtil.Service
+      const discovery = yield* Discovery.Service
+      const dirs = yield* discovery.pull(CLOUDFLARE_SKILLS_URL)
+      expect(dirs.length).toBeGreaterThan(0)
+      for (const dir of dirs) {
+        expect(dir).toStartWith(cacheDir)
+        const md = path.join(dir, "SKILL.md")
+        expect(yield* fsys.existsSafe(md)).toBe(true)
+      }
+    }),
+  )
+
+  it.live("url without trailing slash works", () =>
+    Effect.gen(function* () {
+      const fsys = yield* FSUtil.Service
+      const discovery = yield* Discovery.Service
+      const dirs = yield* discovery.pull(CLOUDFLARE_SKILLS_URL.replace(/\/$/, ""))
+      expect(dirs.length).toBeGreaterThan(0)
+      for (const dir of dirs) {
+        const md = path.join(dir, "SKILL.md")
+        expect(yield* fsys.existsSafe(md)).toBe(true)
+      }
+    }),
+  )
+
+  it.live("returns empty array for invalid url", () =>
+    Effect.gen(function* () {
+      const discovery = yield* Discovery.Service
+      const dirs = yield* discovery.pull(`http://localhost:${server.port}/invalid-url/`)
+      expect(dirs).toEqual([])
+    }),
+  )
+
+  it.live("returns empty array for non-json response", () =>
+    Effect.gen(function* () {
+      // any url not explicitly handled in server returns 404 text "Not Found"
+      const discovery = yield* Discovery.Service
+      const dirs = yield* discovery.pull(`http://localhost:${server.port}/some-other-path/`)
+      expect(dirs).toEqual([])
+    }),
+  )
+
+  it.live("downloads reference files alongside SKILL.md", () =>
+    Effect.gen(function* () {
+      const fsys = yield* FSUtil.Service
+      const discovery = yield* Discovery.Service
+      const dirs = yield* discovery.pull(CLOUDFLARE_SKILLS_URL)
+      // find a skill dir that should have reference files (e.g. agents-sdk)
+      const agentsSdk = dirs.find((d) => d.endsWith(path.sep + "agents-sdk"))
+      expect(agentsSdk).toBeDefined()
+      if (agentsSdk) {
+        const refs = path.join(agentsSdk, "references")
+        expect(yield* fsys.existsSafe(path.join(agentsSdk, "SKILL.md"))).toBe(true)
+        // agents-sdk has reference files per the index
+        const refDir = yield* Effect.promise(() =>
+          Array.fromAsync(new Bun.Glob("**/*.md").scan({ cwd: refs, onlyFiles: true })),
+        )
+        expect(refDir.length).toBeGreaterThan(0)
+      }
+    }),
+  )
+
+  it.live("caches downloaded files on second pull", () =>
+    Effect.gen(function* () {
+      // clear dir and downloadCount
+      yield* Effect.promise(() => rm(cacheDir, { recursive: true, force: true }))
+      downloadCount = 0
+      const discovery = yield* Discovery.Service
+
+      // first pull to populate cache
+      const first = yield* discovery.pull(CLOUDFLARE_SKILLS_URL)
+      expect(first.length).toBeGreaterThan(0)
+      const firstCount = downloadCount
+      expect(firstCount).toBeGreaterThan(0)
+
+      // second pull should return same results from cache
+      const second = yield* discovery.pull(CLOUDFLARE_SKILLS_URL)
+      expect(second.length).toBe(first.length)
+      expect(second.sort()).toEqual(first.sort())
+
+      // second pull should NOT increment download count
+      expect(downloadCount).toBe(firstCount)
+    }),
+  )
+})