Dionisio
b7bd656a43
perf: fix issues #1,#2,#3,#13 from performance audit
- #1 image_transcode: dedicated rayon pool + moka cache (no tokio blocking)
- #2 ltree materialized paths: eliminate N+1 folder/file queries
- #3 compute_content_hash: read blob_hash column instead of loading file into RAM
- #13 event delegation + DocumentFragment: ~15 delegated listeners replace ~19k per-item listeners
Backend: 82/82 tests pass, cargo check clean.
Frontend: ui.js and app.js syntax-validated via Node.js.