ci: add manual Docker Hub README update workflow

- Add workflow_dispatch trigger to main CI/CD
- Create separate update-docker-readme.yml for manual README updates
- Allows updating Docker Hub description without triggering builds

Author: drewburchfield

.github/workflows/ci.yml

@@ -6,6 +6,7 @@ on:
     tags: [ 'v*' ]           # Tags trigger Docker builds
   pull_request:
     branches: [ main ]        # PRs to main get tested
+  workflow_dispatch:          # Allow manual triggering
 
 permissions:
   contents: write
@@ -103,6 +104,23 @@ jobs:
         repository: ${{ secrets.DOCKERHUB_USERNAME }}/help-scout-mcp-server
         short-description: "MCP server for Help Scout - enables AI assistants to search conversations and support data"
         readme-filepath: ./README.md
+
+  update-docker-readme:
+    runs-on: ubuntu-latest
+    needs: test
+    if: github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/main'
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Update Docker Hub description only
+      uses: peter-evans/dockerhub-description@v4
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+        repository: ${{ secrets.DOCKERHUB_USERNAME }}/help-scout-mcp-server
+        short-description: "MCP server for Help Scout - enables AI assistants to search conversations and support data"
+        readme-filepath: ./README.md
 
   release:
     runs-on: ubuntu-latest

.github/workflows/update-docker-readme.yml

@@ -0,0 +1,23 @@
+name: Update Docker Hub README
+
+on:
+  workflow_dispatch:    # Manual trigger only
+  
+permissions:
+  contents: read
+
+jobs:
+  update-readme:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Update Docker Hub description
+      uses: peter-evans/dockerhub-description@v4
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+        repository: ${{ secrets.DOCKERHUB_USERNAME }}/help-scout-mcp-server
+        short-description: "Help Scout MCP Server v1.3.0 - Enhanced tool guidance, MCP SDK v1.17.4, DXT format compliance"
+        readme-filepath: ./README.md