fix(release): add manual publish trigger for specific tags

Author: vklimontovich

.github/workflows/release.yaml

@@ -6,9 +6,15 @@ on:
       - main
       - stable
   workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to publish (e.g., v0.2.1). Leave empty for normal release-please flow.'
+        required: false
+        type: string
 
 jobs:
   release-please:
+    if: github.event_name == 'push'
     runs-on: ubuntu-latest
     outputs:
       release_created: ${{ steps.release.outputs['packages/core--release_created'] }}
@@ -51,8 +57,40 @@ jobs:
           npm install -g npm@latest
           npm publish --provenance --access public
 
+  publish-manual:
+    if: github.event_name == 'workflow_dispatch' && inputs.tag != ''
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.tag }}
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          registry-url: https://registry.npmjs.org
+
+      - name: Install dependencies
+        run: bun install
+
+      - name: Build
+        run: bun run build
+
+      - name: Publish
+        working-directory: packages/core
+        run: |
+          npm install -g npm@latest
+          npm publish --provenance --access public
+
   publish-canary:
-    if: github.ref == 'refs/heads/main'
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     permissions:
       contents: read