PiratesIRC/Dispatcharr-Channel-Maparr-Plugin 1.26.1001200 on GitHub

Major Performance & Reliability Release

M3U import matching reduced from 32 hours to 6 seconds (19K streams vs 31K channels).

Token-based candidate pre-filter — Inverted index reduces fuzzy match candidates from 31K to ~50-200. Applied to all matching code paths. 19,200x speedup on M3U import.
rapidfuzz integration — Conditional import: rapidfuzz (10-100x faster) → thefuzz → built-in Levenshtein.
Early termination in Levenshtein — min_ratio parameter with length pre-check and row-level abort. Dynamic cutoff raises as better scores are found.
Django query optimizations — .only() on stream fetches, stream prefetching before import loop, removed unnecessary select_related.
Normalization caching — Pre-computed normalizations for all names in a single pass.

Atomic CSV writes — tempfile + os.replace() prevents corrupt partial writes. Orphan temp files cleaned up on exception.
Background threading for Organize by Category — Prevents uwsgi worker timeout on long-running operations.
Prefetch safety — Graceful handling of streams deleted between prefetch and import.

Match sensitivity presets — Relaxed (70), Normal (80), Strict (90), Exact (95) dropdown.
Dynamic M3U source dropdown — Populated from database instead of manual text input.
ProgressTracker — WebSocket updates with percentage and ETA for long operations.
SmartRateLimiter — Configurable delay between DB writes (None/Low/Medium/High).
match_all_streams() method — Returns all matches above threshold sorted by score.
PluginConfig class — Centralized configuration constants.
Stop/cancel support — Background operations can be cancelled via the UI.

Removed legacy files (channels.json, channels.txt, networks.json).
Updated README with current features, settings, performance docs, and troubleshooting.

This is a major upgrade. Remove the old plugin, restart Dispatcharr, and install the new zip. All settings will need to be reconfigured.