import Database from 'better-sqlite3';
export declare const CREATE_QUEUE_ITEMS_TABLE = "\n      CREATE TABLE IF NOT EXISTS queue_items (\n        id TEXT PRIMARY KEY,\n        session_id TEXT NOT NULL,\n        session_key TEXT NOT NULL,\n        prompt TEXT NOT NULL,\n        status TEXT NOT NULL DEFAULT 'pending',\n        internal INTEGER NOT NULL DEFAULT 0,\n        position INTEGER NOT NULL DEFAULT 0,\n        created_at TEXT NOT NULL,\n        started_at TEXT,\n        completed_at TEXT,\n        message_id TEXT,\n        dispatch_payload TEXT\n      );\n      CREATE INDEX IF NOT EXISTS idx_queue_session\n        ON queue_items (session_key, status, position);\n    ";
/**
 * Additive migration for restart-safe system work. Internal queue rows use the
 * same durable ordering/replay machinery as user messages, but stay out of the
 * operator-facing queue panel and its cancel/clear controls.
 *
 * `dedupe_key` is the durable identity of an agent-initiated send: a replayed
 * tool call collides on the unique index instead of minting a second row (and
 * with it a second engine turn). The index is partial on `status` as well as on
 * the key, so identity only binds while the send is unsettled — once the first
 * row completes, a genuinely repeated later send is a new intent and enqueues
 * normally.
 *
 * `message_id` links a parked row to the transcript row the operator can see,
 * so the chat can tell which of its own bubbles are still waiting and edit the
 * two together. Null on every row enqueued by a path that has no message.
 *
 * `dispatch_payload` holds the rest of what the turn runs on - its attachments
 * and whether its text was spoken. Those used to live only in the dispatch
 * closure, which is wrong the moment "send this one now" moves a payload onto a
 * different row: the text would arrive with the other message's attachments.
 * Null whenever there is nothing extra to carry, which is most rows.
 */
export declare function migrateQueueItemsSchema(database: Database.Database): void;
//# sourceMappingURL=queue-items-schema.d.ts.map