Multi-Job Dispatch, Dolby Vision & Dashboard Overhaul

Dolby Vision Support

• Added Dolby Vision Profile 5 tone mapping using libplacebo, so DV content generates correct preview thumbnails instead of washed-out images.
• Manual trigger button in the UI to re-process specific items.

FFmpeg Thread Control

• New FFMPEG_THREADS setting to cap the number of threads FFmpeg uses per GPU worker. Useful for limiting resource usage on shared systems.
• Configurable from the Settings page.

Multi-Job Processing

• Jobs now run through a shared dispatcher with a persistent worker pool. Starting a new job no longer waits for the previous one to finish — workers are shared across jobs using FIFO scheduling.
• Workers focus on the oldest job first and spill over to newer jobs when idle.

Dashboard Improvements

• Worker cards now show library context — e.g. "TV Shows > Breaking Bad S05E14" instead of just truncated episode names.
• Job start time and elapsed timer — Active Jobs card shows when a job started and a live-updating duration.
• Webhook countdown — When a webhook fires, a banner shows the debounce countdown so you know a job is about to start (instead of seeing nothing for 60 seconds).
• Collapsible file lists — Webhook file lists in Active Jobs now use a dropdown instead of cramming everything on one line.
• Libraries card — Now shows which libraries are actually selected for processing, with non-selected ones dimmed.
• Removed duplicate GPU section — The redundant "GPU Acceleration" display was consolidated into the single "GPUs" section.

Webhook Handling

• Jobs are now correctly marked as failed when no webhook file paths resolve in Plex (instead of silently completing with zero items).
• Pending webhook batches are exposed via GET /api/webhooks/pending for monitoring.

GPU Detection

• Fixed NVIDIA GPU detection on WSL2 when /dev/dri exists but has no DRM render devices.

Docker / Deployment

• Docker Compose examples now include timezone configuration (/etc/localtime volume + TZ env var) so log timestamps and scheduled jobs use your local time.
• Added FAQ entries from Reddit community feedback to the docs.

Bug Fixes

• Fixed title truncation on the web dashboard — titles were being clipped to 20 characters (a terminal width intended for CLI mode).
• Fixed outcome tracking accuracy for generated/skipped/failed counts.
• "No items processed" tooltip now shows correctly on zero-outcome jobs.