Add GitHub Actions CI/CD for Modal deployment

- Fix Modal ASGI app serving with

@modal
.concurrent
- Add .github/workflows/deploy.yml for auto-deploy on push to main
- Requires MODAL_TOKEN_ID and MODAL_TOKEN_SECRET secrets

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -0,0 +1,32 @@
+name: Deploy to Modal
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    env:
+      MODAL_TOKEN_ID: ${{ secrets.MODAL_TOKEN_ID }}
+      MODAL_TOKEN_SECRET: ${{ secrets.MODAL_TOKEN_SECRET }}
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Install Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install Modal
+        run: |
+          python -m pip install --upgrade pip
+          pip install modal
+
+      - name: Deploy to Modal
+        run: |
+          modal deploy modal_app.py

modal_app.py

@@ -31,15 +31,16 @@ image = (
         modal.Secret.from_name("elevenlabs-api-key"),
     ],
     timeout=600,
-    allow_concurrent_inputs=10,
 )
+@modal.concurrent(max_inputs=100)
 @modal.asgi_app()
 def serve():
-    """Serve the Gradio app."""
+    """Serve the Gradio app as ASGI."""
     import sys
     sys.path.insert(0, "/app")
 
-    from app import app as gradio_app
+    from app import create_app
+    gradio_app = create_app()
     return gradio_app