fix(workflows): add mc#664 tracker to lint-pre-flip CoE directive

lint-continue-on-error-tracking (Tier 2e) requires a tracker
within ±2 lines of every `continue-on-error: true`. The inline
comment was 3 lines above the directive, outside the scan window.

Move mc#664 to an inline comment on the directive line so it is
within ±2 lines (WINDOW=2 per lint_continue_on_error_tracking.py).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/lint-pre-flip-continue-on-error.yml

@@ -97,11 +97,10 @@ jobs:
     name: Verify continue-on-error flips have run-log proof
     runs-on: ubuntu-latest
     timeout-minutes: 8
-    # Phase 3 (RFC #219 §1): surface broken flips without blocking
-    # the PR yet. Follow-up flips this to `false` once the workflow
-    # itself has clean recent runs on main. Dogfood: don't violate
-    # the same rule the workflow enforces.
-    continue-on-error: true
+    # Phase 3 (RFC internal#219 §1): surface broken flips without blocking
+    # the PR yet. Follow-up flips this to `false` once the workflow itself
+    # has clean recent runs on main. mc#664 interim — remove when CoE→false.
+    continue-on-error: true  # mc#664
     steps:
       - name: Check out PR head (full history for base-SHA access)
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2