chore: 重构 CI/CD 与 Docker 发布流程

将部署链路调整为 CI 构建推送镜像、服务器拉取镜像运行，并拆分/复用 Gitea workflow 与公共准备脚本；同时统一 APP_NAME 与端口变量配置，补充 Docker 与 ESLint 相关配置文件以提升可维护性。

Made-with: Cursor

.gitea/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+
+jobs:
+  # workflow_call 调用示例（先保留注释，不启用）：
+  # ci:
+  #   uses: ./.gitea/workflows/reusable-ci.yml
+  #   with:
+  #     node_major: "22"
+  #     yarn_version: "stable"
+  #     run_lint: true
+  #     run_tsc: true
+
+  ci:
+    runs-on: ubuntu-latest
+    env:
+      NODE_MAJOR: "22"
+      YARN_VERSION: "stable"
+    steps:
+      - name: Prepare workspace (checkout + node/yarn)
+        run: |
+          set -euo pipefail
+          chmod +x .gitea/scripts/prepare-workspace.sh
+          ./.gitea/scripts/prepare-workspace.sh \
+            "${{ github.server_url }}/${{ github.repository }}.git" \
+            "${{ github.sha }}"
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+      - name: Lint
+        run: yarn lint
+      - name: TypeScript check
+        run: yarn tsc --noEmit