feat(database): add hardcover_id column to book_cache for rating sync

        ]],

    },

<<<<<<< HEAD

    -- Migration 16: add hardcover_id column to book_cache

    -- Stores the Hardcover integer book ID returned by the Booklore API,

    -- so we can rate books on Hardcover without a lookup on every sync.

        [[

            CREATE INDEX IF NOT EXISTS idx_book_cache_hardcover_id

            ON book_cache(hardcover_id)

=======

    -- Migration 16: Bookmark sync tables.

    -- pending_bookmarks: queue of bookmarks waiting to be uploaded.

    -- synced_bookmarks:  dedup log of bookmarks already on the server.

        [[

            CREATE INDEX IF NOT EXISTS idx_synced_bookmarks_book_cache_id

            ON synced_bookmarks(book_cache_id)

>>>>>>> origin/main

        ]],

    },

    [17] = {

        [[

            ALTER TABLE book_cache ADD COLUMN hardcover_id INTEGER

        ]],

        [[

            CREATE INDEX IF NOT EXISTS idx_book_cache_hardcover_id

            ON book_cache(hardcover_id)

        ]],

    },

}