feat(db): add lidarr_quarantine + actions schema (migration 0011)

internal/db/migrations/0011_lidarr_quarantine.down.sql

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+DROP INDEX IF EXISTS lidarr_quarantine_actions_created_idx;
+DROP INDEX IF EXISTS lidarr_quarantine_actions_track_idx;
+DROP TABLE IF EXISTS lidarr_quarantine_actions;
+DROP TYPE  IF EXISTS lidarr_quarantine_action_kind;
+DROP INDEX IF EXISTS lidarr_quarantine_user_idx;
+DROP INDEX IF EXISTS lidarr_quarantine_track_idx;
+DROP TABLE IF EXISTS lidarr_quarantine;
+DROP TYPE  IF EXISTS lidarr_quarantine_reason;

internal/db/migrations/0011_lidarr_quarantine.up.sql

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+-- M5b: per-user track quarantines + admin action audit log.
+--
+-- lidarr_quarantine — one row per (user, track) complaint. PK matches
+-- the general_likes pattern. Re-flagging the same track upserts. Deleted
+-- on user resolution (un-hide), admin Resolve, or any of the deletes.
+--
+-- lidarr_quarantine_actions — audit log of admin destructive actions.
+-- Snapshot text columns let the log stay readable after the underlying
+-- track/album rows are gone.
+
+CREATE TYPE lidarr_quarantine_reason AS ENUM (
+    'bad_rip', 'wrong_file', 'wrong_tags', 'duplicate', 'other'
+);
+
+CREATE TABLE lidarr_quarantine (
+    user_id     uuid                     NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    track_id    uuid                     NOT NULL REFERENCES tracks(id) ON DELETE CASCADE,
+    reason      lidarr_quarantine_reason NOT NULL,
+    notes       text,
+    created_at  timestamptz              NOT NULL DEFAULT now(),
+    PRIMARY KEY (user_id, track_id)
+);
+
+CREATE INDEX lidarr_quarantine_track_idx ON lidarr_quarantine (track_id);
+CREATE INDEX lidarr_quarantine_user_idx  ON lidarr_quarantine (user_id, created_at DESC);
+
+CREATE TYPE lidarr_quarantine_action_kind AS ENUM (
+    'resolved', 'deleted_file', 'deleted_via_lidarr'
+);
+
+CREATE TABLE lidarr_quarantine_actions (
+    id                uuid                          PRIMARY KEY DEFAULT gen_random_uuid(),
+    track_id          uuid                          NOT NULL,
+    track_title       text                          NOT NULL,
+    artist_name       text                          NOT NULL,
+    album_title       text,
+    action            lidarr_quarantine_action_kind NOT NULL,
+    admin_id          uuid                     REFERENCES users(id) ON DELETE SET NULL,
+    lidarr_album_mbid text,
+    affected_users    int                      NOT NULL,
+    created_at        timestamptz              NOT NULL DEFAULT now()
+);
+
+CREATE INDEX lidarr_quarantine_actions_track_idx   ON lidarr_quarantine_actions (track_id);
+CREATE INDEX lidarr_quarantine_actions_created_idx ON lidarr_quarantine_actions (created_at DESC);