feat: add version management with setuptools-scm

- Configure hatch-vcs for automatic version generation from git tags
- Update pyproject.toml to use dynamic versioning
- Add src/_version.py for runtime version access
- Update src/__init__.py to import version from _version
- Add __APP_VERSION__ to frontend vite config
- Add version script to frontend package.json
- Update CI workflows to trigger on version tags instead of branches

.github/workflows/deploy-pages.yml

@@ -2,7 +2,7 @@ name: Deploy to GitHub Pages
 
 on:
   push:
-    branches: [master]
+    tags: ['v*']
   workflow_dispatch:
 
 permissions:

.github/workflows/docker-publish.yml

@@ -2,7 +2,6 @@ name: Build and Publish Docker Image
 
 on:
   push:
-    branches: [master, main]
     tags: ['v*']
   workflow_dispatch:
     inputs: