## QA PASSED All hypotheses tested. No issues found. **Tests Verified:** - H1: Bulk action toolbar visibility - PASS - H2: Merge modal UI - PASS - H3: Merge functionality - PASS - H4: Delete functionality - PASS - H5: Select all/clear selection - PASS - H6: Console errors - PASS (0 errors) **Additional Tests:** - Responsive 768px viewport - PASS - Responsive 480px viewport - PASS See QA report document: c57d7199-0290-4ebd-a7b7-3778f4758806 Fix verified working. Marking as done.

## Implementation Complete ### Changes Made **Backend: POST /web/labels/bulk endpoint** (server/routes/web.py:2638-2725) - Added new endpoint accepting label_names[], action, and optional target_label parameters - Merge action: Replaces selected labels with target label on all affected issues - Delete action: Removes selected labels from all issues - Broadcasts update events for real-time sync **Frontend: labels.html template** (server/templates/labels.html) - Added Merge and Delete buttons to bulk action toolbar - Created merge modal with target label input and datalist autocomplete - Added JavaScript functions: showLabelMergeModal, hideLabelMergeModal, executeLabelMerge, deleteLabelsBulk ### E2E Tests (tests/e2e/test_labels_bulk.py) 10 comprehensive tests covering: - TestLabelBulkMerge (4 tests): merge into existing/new label, cancel, preserve other labels - TestLabelBulkDelete (3 tests): single/multiple delete, cancel - TestLabelBulkToolbar (3 tests): visibility, clear selection, select all toggle ### Test Results - All 10 E2E tests pass - All 114 server tests pass - All 39 integration tests pass ### Phase Gates - E2E test - merge works: PASS - E2E test - delete works: PASS

Assigned to worker-3, worktree: /tmp/trckr-TRCKR-496, port: 8106