feat: Minstrel no longer talks to Lidarr: its connection, Delete via Lidarr and the unmonitor options are gone, and the track reports are plain quarantine (M502 #5525)

Migration 0091 drops lidarr_config and renames the quarantine tables, types,
indexes and the history column off the Lidarr name. The Integrations Lidarr
card, the Reports "Delete via Lidarr" action, the merge and remove-track
unmonitor options, the Lidarr audit actions and error codes go, on the
server, web and Android. The README describes acquisition as it is now.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/db/migrations/0091_remove_lidarr.down.sql

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+ALTER TABLE quarantine_actions RENAME CONSTRAINT quarantine_actions_admin_id_fkey TO lidarr_quarantine_actions_admin_id_fkey;
+ALTER TABLE quarantine RENAME CONSTRAINT quarantine_track_id_fkey TO lidarr_quarantine_track_id_fkey;
+ALTER TABLE quarantine RENAME CONSTRAINT quarantine_user_id_fkey TO lidarr_quarantine_user_id_fkey;
+
+ALTER INDEX quarantine_actions_created_idx RENAME TO lidarr_quarantine_actions_created_idx;
+ALTER INDEX quarantine_actions_track_idx RENAME TO lidarr_quarantine_actions_track_idx;
+ALTER INDEX quarantine_actions_pkey RENAME TO lidarr_quarantine_actions_pkey;
+ALTER TABLE quarantine_actions RENAME COLUMN album_mbid TO lidarr_album_mbid;
+ALTER TYPE quarantine_action_kind RENAME VALUE 'deleted_album' TO 'deleted_via_lidarr';
+ALTER TYPE quarantine_action_kind RENAME TO lidarr_quarantine_action_kind;
+ALTER TABLE quarantine_actions RENAME TO lidarr_quarantine_actions;
+
+ALTER INDEX quarantine_pkey RENAME TO lidarr_quarantine_pkey;
+ALTER INDEX quarantine_track_idx RENAME TO lidarr_quarantine_track_idx;
+ALTER TYPE quarantine_reason RENAME TO lidarr_quarantine_reason;
+ALTER TABLE quarantine RENAME TO lidarr_quarantine;
+
+CREATE TABLE lidarr_config (
+    id                          smallint PRIMARY KEY DEFAULT 1 CHECK (id = 1),
+    enabled                     boolean  NOT NULL DEFAULT false,
+    base_url                    text,
+    api_key                     text,
+    default_quality_profile_id  int,
+    default_root_folder_path    text,
+    default_metadata_profile_id integer,
+    created_at                  timestamptz NOT NULL DEFAULT now(),
+    updated_at                  timestamptz NOT NULL DEFAULT now()
+);
+INSERT INTO lidarr_config (id, enabled) VALUES (1, false);

internal/db/migrations/0091_remove_lidarr.up.sql

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+-- Minstrel no longer talks to Lidarr (M502 #5525): it finds, downloads,
+-- checks and files music itself.
+--
+--   lidarr_config               the connection's settings: dropped.
+--   lidarr_quarantine(_actions) the per-user track reports and the admin
+--                               actions on them, which never needed Lidarr:
+--                               renamed to quarantine(_actions), with their
+--                               types and indexes.
+--   'deleted_via_lidarr'        the history of an album removed through
+--                               Lidarr reads as what it did: 'deleted_album'.
+--   lidarr_album_mbid           the album id that removal recorded: album_mbid.
+DROP TABLE lidarr_config;
+
+ALTER TABLE lidarr_quarantine RENAME TO quarantine;
+ALTER TYPE lidarr_quarantine_reason RENAME TO quarantine_reason;
+ALTER INDEX lidarr_quarantine_track_idx RENAME TO quarantine_track_idx;
+ALTER INDEX lidarr_quarantine_pkey RENAME TO quarantine_pkey;
+
+ALTER TABLE lidarr_quarantine_actions RENAME TO quarantine_actions;
+ALTER TYPE lidarr_quarantine_action_kind RENAME TO quarantine_action_kind;
+ALTER TYPE quarantine_action_kind RENAME VALUE 'deleted_via_lidarr' TO 'deleted_album';
+ALTER TABLE quarantine_actions RENAME COLUMN lidarr_album_mbid TO album_mbid;
+ALTER INDEX lidarr_quarantine_actions_pkey RENAME TO quarantine_actions_pkey;
+ALTER INDEX lidarr_quarantine_actions_track_idx RENAME TO quarantine_actions_track_idx;
+ALTER INDEX lidarr_quarantine_actions_created_idx RENAME TO quarantine_actions_created_idx;
+
+ALTER TABLE quarantine RENAME CONSTRAINT lidarr_quarantine_user_id_fkey TO quarantine_user_id_fkey;
+ALTER TABLE quarantine RENAME CONSTRAINT lidarr_quarantine_track_id_fkey TO quarantine_track_id_fkey;
+ALTER TABLE quarantine_actions RENAME CONSTRAINT lidarr_quarantine_actions_admin_id_fkey TO quarantine_actions_admin_id_fkey;