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

.github/workflows/stats.yml

@@ -0,0 +1,35 @@
+name: stats
+
+on:
+  schedule:
+    - cron: "0 12 * * *" # Run daily at 12:00 UTC
+  workflow_dispatch: # Allow manual trigger
+
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+jobs:
+  stats:
+    if: github.repository == 'anomalyco/opencode'
+    runs-on: blacksmith-4vcpu-ubuntu-2404
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+
+      - name: Setup Bun
+        uses: ./.github/actions/setup-bun
+
+      - name: Run stats script
+        run: bun script/stats.ts
+
+      - name: Commit stats
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add STATS.md
+          git diff --staged --quiet || git commit -m "ignore: update download stats $(date -I)"
+          git push
+        env:
+          POSTHOG_KEY: ${{ secrets.POSTHOG_KEY }}