init: mipu-open 对外开放项目统一管理仓库

- 添加 mipu-api 作为 git submodule (Claude Code Skill)
- 迁移 API 文档源文件到 docs/ 目录统一维护
- 添加 Gitea Actions 工作流：tag推送自动打包docs并发布Release
- Skill 运行时自动从 mipu-open Release 下载最新文档

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/release-docs.yml

@@ -0,0 +1,58 @@
+name: Release Docs
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Package docs
+        run: |
+          if [ ! -d "docs" ]; then
+            echo "Error: docs directory not found"
+            exit 1
+          fi
+          TAG=${GITHUB_REF#refs/tags/}
+          echo "$TAG" > "docs/.version"
+          tar -czf /tmp/docs.tar.gz docs/
+
+      - name: Create Release
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        run: |
+          TAG=${GITHUB_REF#refs/tags/}
+          API="${{ github.server_url }}/api/v1/repos/${{ github.repository }}"
+
+          # Create release
+          curl -sf -X POST "${API}/releases" \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/json" \
+            -d "{
+              \"tag_name\": \"${TAG}\",
+              \"name\": \"API文档 ${TAG}\",
+              \"body\": \"米普云航司API文档更新 ${TAG}\"
+            }"
+
+          # Get release ID
+          RELEASE_ID=$(curl -sf "${API}/releases/tags/${TAG}" \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            | jq -r '.id')
+
+          if [ -z "$RELEASE_ID" ] || [ "$RELEASE_ID" = "null" ]; then
+            echo "Error: failed to create release"
+            exit 1
+          fi
+
+          # Upload docs.tar.gz
+          curl -sf -X POST "${API}/releases/${RELEASE_ID}/assets?name=docs.tar.gz" \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: multipart/form-data" \
+            -F "attachment=@/tmp/docs.tar.gz"
+
+          echo "Release ${TAG} created with docs.tar.gz"