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)

cista/util/apphelpers.py

@@ -29,6 +29,8 @@ async def handle_sanic_exception(request, e):
     if not message or not request.app.debug and code == 500:
         message = "Internal Server Error"
     message = f"⚠️ {message}" if code < 500 else f"🛑 {message}"
+    if code == 500:
+        logger.exception(e)
     # Non-browsers get JSON errors
     if "text/html" not in request.headers.accept:
         return jres(