feat: simplify installation to single @stable tag

- Remove automatic versioning and dual publishing strategy
- Delete release.yaml and promote-to-stable.yaml workflows
- Add manual-release.yaml for controlled releases
- Remove semantic-release dependencies and config
- Update all documentation to use npx bmad-method install
- Configure NPM to publish to @stable tag by default
- Users can now use simple npx bmad-method install command

.github/workflows/manual-release.yaml

@@ -0,0 +1,98 @@
+name: Manual Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version_bump:
+        description: Version bump type
+        required: true
+        default: patch
+        type: choice
+        options:
+          - patch
+          - minor
+          - major
+
+permissions:
+  contents: write
+  packages: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: npm
+          registry-url: https://registry.npmjs.org
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests and validation
+        run: |
+          npm run validate
+          npm run format:check
+          npm run lint
+
+      - name: Configure Git
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+      - name: Bump version
+        run: npm run version:${{ github.event.inputs.version_bump }}
+
+      - name: Get new version
+        id: version
+        run: echo "new_version=$(node -p "require('./package.json').version")" >> $GITHUB_OUTPUT
+
+      - name: Update installer package.json
+        run: |
+          sed -i 's/"version": ".*"/"version": "${{ steps.version.outputs.new_version }}"/' tools/installer/package.json
+
+      - name: Build project
+        run: npm run build
+
+      - name: Commit version bump
+        run: |
+          git add .
+          git commit -m "release: bump to v${{ steps.version.outputs.new_version }}"
+
+      - name: Create and push tag
+        run: |
+          git tag -a "v${{ steps.version.outputs.new_version }}" -m "Release v${{ steps.version.outputs.new_version }}"
+          git push origin "v${{ steps.version.outputs.new_version }}"
+
+      - name: Push changes to main
+        run: git push origin HEAD:main
+
+      - name: Publish to NPM with stable tag
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npm publish --tag stable
+
+      - name: Create GitHub Release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: v${{ steps.version.outputs.new_version }}
+          release_name: Release v${{ steps.version.outputs.new_version }}
+          draft: false
+          prerelease: false
+
+      - name: Summary
+        run: |
+          echo "🎉 Successfully released v${{ steps.version.outputs.new_version }}!"
+          echo "📦 Published to NPM with @stable tag"
+          echo "🏷️ Git tag: v${{ steps.version.outputs.new_version }}"
+          echo "✅ Users running 'npx bmad-method@stable install' will now get version ${{ steps.version.outputs.new_version }}"