New api/feedback.php stores rating + correction text to tool_feedback
table in bnl_admin. renderFeedbackWidget() appended to all tool results
(timeline, redact, transcribe, ask, summarize, search). Thumbs reveal
a textarea for missed/wrong items on click; submit POSTs asynchronously.
Engine from last run is stored alongside the rating.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
