RC-11

internal/data/schema.sql

@@ -29,6 +29,9 @@ CREATE TABLE IF NOT EXISTS tasks (
     nft_prompt_instructions TEXT NOT NULL DEFAULT '',
     nft_negative_prompt TEXT NOT NULL DEFAULT '',
     nft_style_reference TEXT NOT NULL DEFAULT '',
+    retire_after_completion INTEGER NOT NULL DEFAULT 0,
+    artifact_owner_client_id TEXT REFERENCES clients(id),
+    artifact_origin TEXT NOT NULL DEFAULT 'win',
     created_at INTEGER NOT NULL,
     completed_at INTEGER,
     winner_client_id TEXT REFERENCES clients(id),
@@ -45,6 +48,19 @@ CREATE TABLE IF NOT EXISTS tasks (
 );
 CREATE INDEX IF NOT EXISTS tasks_status_created_idx ON tasks(status, created_at);
 
+-- Current collectible ownership is separate from historical winner provenance.
+-- Transfers keep the original winner fields untouched and are audit logged here.
+CREATE TABLE IF NOT EXISTS artifact_transfers (
+    id TEXT PRIMARY KEY,
+    task_id TEXT NOT NULL REFERENCES tasks(id) ON DELETE CASCADE,
+    from_client_id TEXT REFERENCES clients(id) ON DELETE SET NULL,
+    to_client_id TEXT NOT NULL REFERENCES clients(id),
+    reason TEXT NOT NULL DEFAULT '',
+    created_at INTEGER NOT NULL
+);
+CREATE INDEX IF NOT EXISTS artifact_transfers_task_idx ON artifact_transfers(task_id, created_at DESC);
+CREATE INDEX IF NOT EXISTS artifact_transfers_to_idx ON artifact_transfers(to_client_id, created_at DESC);
+
 -- False guesses are intentionally not persisted. This table only keeps the
 -- aggregate state needed for the 3D map, ranking, rate limiting and next seq.
 CREATE TABLE IF NOT EXISTS task_points (