Resolve canonical AI targets at their current canvas owner

db/011-canvas-ai-target-location.sql

@@ -0,0 +1,9 @@
+BEGIN;
+-- The frozen board remains the plan origin; result versions belong to the board
+-- that actually received the output after any owner-only move.
+ALTER TABLE canvas_ai_steps ADD COLUMN applied_board_id uuid;
+ALTER TABLE canvas_ai_steps ADD FOREIGN KEY(project,workspace_id,applied_board_id) REFERENCES materials(project,workspace_id,id);
+UPDATE canvas_ai_steps SET applied_board_id=board_id WHERE applied_version IS NOT NULL;
+CREATE UNIQUE INDEX canvas_ai_canonical_target_busy ON canvas_ai_steps(project,workspace_id,(frozen_input->>'canonical_root'),node_id,(frozen_input->>'target_incarnation'))
+ WHERE status IN('queued','running') AND frozen_input->>'canonical_root' IS NOT NULL;
+COMMIT;