config: disable cursor profile until usage cycle resets

Why: Cursor Ultra monthly usage cap exhausts on every dispatch
(ActionRequiredError); owner approved disabling via option 1 of the
task decision point, keeping antigravity/pi as active candidates.
Evidence: /tmp/docker-image-unit2-receipt.json (failed-unknown,
usage cap); agy probe ok; agent-exec validate ok.
Impact: execution routing only; re-enable enabled: true after 2026-11-10.
Refs: AGENT-EXECUTION.md; .task/feature-docker-test-image.md

AGENT-EXECUTION.md

@@ -49,7 +49,11 @@ profiles:
     adapter: cursor
     executable: cursor-agent-stable
     model: auto
-    enabled: true
+    # Disabled 2026-10-20 by owner decision (task feature/docker-test-image,
+    # option 1): Cursor Ultra monthly usage cap exhausted — every dispatch
+    # dies with ActionRequiredError; limits reset 2026-11-10. Re-enable
+    # (enabled: true) after the cycle resets.
+    enabled: false
 
   antigravity:
     adapter: antigravity