feat(artwork): add artwork, item_artwork and artwork_queue tables

db/migrations/20260722023032_add_artwork_tables.sql

@@ -0,0 +1,41 @@
+-- +goose Up
+CREATE TABLE artwork (
+  hash TEXT PRIMARY KEY,
+  mime TEXT NOT NULL,
+  width INTEGER NOT NULL DEFAULT 0,
+  height INTEGER NOT NULL DEFAULT 0,
+  size_bytes INTEGER NOT NULL DEFAULT 0,
+  blur_hash TEXT NOT NULL DEFAULT '',
+  source_path TEXT NOT NULL DEFAULT '',
+  ref_mtime INTEGER NOT NULL DEFAULT 0,
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE item_artwork (
+  item_kind TEXT NOT NULL,
+  item_id TEXT NOT NULL,
+  image_type TEXT NOT NULL DEFAULT 'primary',
+  hash TEXT NOT NULL DEFAULT '',
+  source TEXT NOT NULL DEFAULT '',
+  attempted_at TIMESTAMP,
+  updated_at TIMESTAMP,
+  PRIMARY KEY (item_kind, item_id, image_type)
+) WITHOUT ROWID;
+CREATE INDEX ix_item_artwork_hash ON item_artwork(hash);
+
+CREATE TABLE artwork_queue (
+  item_kind TEXT NOT NULL,
+  item_id TEXT NOT NULL,
+  image_type TEXT NOT NULL DEFAULT 'primary',
+  priority INTEGER NOT NULL DEFAULT 0,
+  attempts INTEGER NOT NULL DEFAULT 0,
+  retry_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  enqueued_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (item_kind, item_id, image_type)
+) WITHOUT ROWID;
+CREATE INDEX ix_artwork_queue_drain ON artwork_queue(retry_at, priority, enqueued_at);
+
+-- +goose Down
+DROP TABLE artwork_queue;
+DROP TABLE item_artwork;
+DROP TABLE artwork;