feat: Enable manual release triggering and update existing releases (启用手动触发发布并更新现有发布)

- Added `workflow_dispatch` trigger for manual release creation/update (添加 `workflow_dispatch` 触发器以手动创建/更新发布)
- Added inputs for specifying tag name and release ID for manual triggers (为手动触发器添加了用于指定标签名称和发布 ID 的输入)
- Updated release creation/update logic to handle both automatic and manual triggers (更新了发布创建/更新逻辑以处理自动和手动触发器)
- Added `update_release` job to upload artifacts to existing releases when triggered manually (添加了 `update_release` 作业，以便在手动触发时将工件上传到现有版本)
- Modified `create_release` job to only run when triggered automatically or when creating a new release manually (修改了 `create_release` 作业，使其仅在自动触发或手动创建新版本时运行)
- Set `base-href` in `flutter build web` command to root `/` (将 `flutter build web` 命令中的 `base-href` 设置为根目录 `/`)
- Added environment variables to determine trigger type and release information (添加了环境变量以确定触发类型和发布信息)
- Added if condition to conditionally execute `create_release` and `update_release` jobs (添加了 if 条件以有条件地执行 `create_release` 和 `update_release` 作业)

Author: CaiJingLong

.github/workflows/release.yml

@@ -3,13 +3,29 @@ name: Release Build
 on:
   release:
     types: [created]
+  workflow_dispatch:
+    inputs:
+      tag_name:
+        description: 'Release tag name (e.g., v1.0.0)'
+        required: true
+        type: string
+      release_id:
+        description: 'Release ID (optional, for existing releases)'
+        required: false
+        type: string
 
 # 设置工作流权限
 permissions:
   contents: write  # 允许写入内容（推送、创建 Release 等）
   pages: write     # 允许部署到 GitHub Pages
   id-token: write  # 允许 OIDC 令牌生成
 
+# 获取当前触发类型（自动发布还是手动触发）
+env:
+  IS_WORKFLOW_DISPATCH: ${{ github.event_name == 'workflow_dispatch' }}
+  RELEASE_TAG: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tag_name || github.ref_name }}
+  RELEASE_ID: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.release_id || github.event.release.id }}
+
 jobs:
   build:
     name: Build Desktop & Web
@@ -102,7 +118,7 @@ jobs:
         run: |
           cd Flutter/json_to_dart
           flutter config --enable-web
-          flutter build web --release --web-renderer html --base-href "/JsonToDart/"
+          flutter build web --release --web-renderer html
 
       - name: Deploy to GitHub Pages
         uses: JamesIves/github-pages-deploy-action@v4
@@ -113,8 +129,11 @@ jobs:
           target-folder: .
 
   create_release:
-    name: Create Release
+    name: Create/Update Release
     needs: [build, deploy_web]
+    if: >
+      github.event_name != 'workflow_dispatch' || 
+      (github.event_name == 'workflow_dispatch' && github.event.inputs.release_id == '')
     runs-on: ubuntu-latest
     steps:
       - name: Download all artifacts
@@ -126,9 +145,52 @@ jobs:
         id: create_release
         uses: softprops/action-gh-release@v1
         with:
+          tag_name: ${{ env.RELEASE_TAG }}
+          name: Release ${{ env.RELEASE_TAG }}
           files: |
             artifacts/linux-release/linux.tar.gz
             artifacts/macos-release/macos.zip
             artifacts/windows-release/windows.zip
+          generate_release_notes: true
+          draft: false
+          prerelease: false
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  update_release:
+    name: Update Release
+    needs: [build, create_release]
+    if: github.event_name == 'workflow_dispatch' && github.event.inputs.release_id != ''
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v3
+        with:
+          path: artifacts
+      
+      - name: Upload to existing Release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          release_id: ${{ env.RELEASE_ID }}
+          file: artifacts/linux-release/linux.tar.gz
+          asset_name: linux.tar.gz
+          overwrite: true
+
+      - name: Upload macOS artifact to Release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          release_id: ${{ env.RELEASE_ID }}
+          file: artifacts/macos-release/macos.zip
+          asset_name: macos.zip
+          overwrite: true
+
+      - name: Upload Windows artifact to Release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          release_id: ${{ env.RELEASE_ID }}
+          file: artifacts/windows-release/windows.zip
+          asset_name: windows.zip
+          overwrite: true