Maintenance update (#7)

- Use modern tooling uv and bun
- Various changes to work with latest PyAV and PIL that have changed their API
- Improved image, video and document previews (uses AVIF, renders AVIF/HEIC/videos in HDR, faster processing)
- Fix a server hang in some cases where a folder was moved or renamed
- Log exceptions instead of only returning 500 response to client
- Log timing of preview generation functions
- Default to quality 50 in previews (previously 40)

frontend/README.md

@@ -22,25 +22,25 @@ If the standalone TypeScript plugin doesn't feel fast enough to you, Volar has a
 ### Run the backend
 
 ```fish
-hatch shell
-cista --dev -l :8000
+uv sync --dev
+uv run cista --dev -l :8000
 ```
 
 ### And the Vite server (in another terminal)
 
 ```fish
 cd frontend
-npm install
-npm run dev
+bun install
+bun run dev
 ```
 Browse to Vite, which will proxy API requests to port 8000. Both servers live reload changes.
 
 
 ### Type-Check, Compile and Minify for Production
 
-This is also called by `hatch build` during Python packaging:
+This is also called by `uv build` during Python packaging:
 
 ```fish
-npm run build
+bun run build
 ```