Comment-only. Headers on the scripts touched during today's caching work
(cache-first fetches, write-through per-item cache, single-walk
consolidation, movieFile-embedded fix) still described pre-change
behavior. Also brought common.sh's top-level cache doc block current --
it was written for the single-consumer 2026-07-16 state and didn't
mention the tmpfs move, the write guard, or the 15+ consumers that now
go through it.
Every script that fetches the full Lidarr/Sonarr/Radarr tracked-library
list now goes through arr_get_tracked_data() instead of hitting the API
directly -- cache-first when fresh, live fetch as fallback when stale,
waits out an active rescan before either. Per-item file data (trackFile/
episodefile/moviefile) stays live-only everywhere, since that's the
actual disk-truth these scripts' decisions depend on and was never part
of what's cached.
Also adds arr_cache_prefill.sh to CRITICAL_MAINTENANCE_SCRIPTS (30min
tier) with a short 1min wait ceiling, so the cache stays consistently
fresh instead of only refreshing whenever some other script happens to
write through. A full cache refresh for all three arrs measured at ~12s
total live -- nothing like the multi-hour cost of an actual rescan.
blink-182 kept getting rescored and re-added every week despite already
being in the library (id=155). Root cause: MusicBrainz's canonical name
is 'blink‐182' using a Unicode hyphen (U+2010), while Last.fm's candidate
list returns the plain ASCII hyphen — the exact-string _in_lidarr() /
_in_emby_library() checks never matched, so it was treated as a new
artist every run, scored, accepted, and its add attempt correctly failed
against Lidarr's duplicate-MBID rejection.
Added _normalize_dashes() to collapse Unicode hyphen/dash variants (U+2010
through U+2014) to ASCII '-' before comparing, applied to both the stored
library name lists and each candidate name at match time. Fixes this for
any artist with a stylized dash in their canonical name, not just this one.
Media/ now holds only media-level scripts (cleaner, permissions, play_state_sync).
All arr management scripts (cleanup, discovery, sync, webhooks, release fixer) live in Arrs_Stack/.
Gmer4Lfe