fix: v3.0.9 - engine refuses Class 1 keyword traps, delete stale SKILL.md files, reinforce LAW 1 over WebSearch

Five Opus 4.7 self-debugs on v3.0.8 (3 passing, 2 failing runs) converged
on four fixes:

1. Engine refuses Class 1 demographic-shopping queries at main() front-door.
   Birthday-gift failure mode becomes structurally impossible - the pipeline
   never runs on a doomed query. Exit code 2 with a REFUSE message on stderr
   pointing the model to ask for hobbies/relationship/budget. Escape hatch:
   LAST30DAYS_SKIP_PREFLIGHT=1 for "just run it" overrides.

2. Delete stale `.agents/skills/last30days/SKILL.md` (1382 lines, April 13
   snapshot) and `.hermes-plugin/SKILL.md` (269 lines, April 13 snapshot).
   Peter Steinberger's self-debug named the first file as the one it read
   instead of the real SKILL.md. One SKILL.md per plugin, at the plugin root.
   Sync script simplified: Hermes now always uses main SKILL.md.

3. render_compact() appends an explicit END-OF-CANONICAL-OUTPUT boundary
   with pass-through instruction. The model had the canonical body in its
   buffer on the Peter run and discarded it; the boundary makes pass-through
   the path of least resistance.

4. LAW 1 gains a verbatim-pattern override clause naming the exact WebSearch
   tool-result reminder ("CRITICAL REQUIREMENT: MUST include Sources:
   section") that caused Peter's trailing Sources leak. No more ambiguity
   at synthesis time.

Tests: tests/test_preflight.py, 29 scenarios covering Class 1 matches
(birthday gift, best-for-demographic, what-to-buy-relationship), qualifier
skips (budget, hobbies, activity after year-old), and the REFUSE message
shape.

Validation gate before merging to main: re-run the 5 debug topics
(Peter Steinberger, birthday gift for 40 year old, Kanye West, Garry Tan,
OpenClaw vs Paperclip vs Hermes) on v3.0.9 and confirm 5/5 canonical
compliance. Rollback to v3.0.8 if any previously-passing topic regresses.

Plan: docs/plans/2026-04-18-015-fix-engine-refuse-keyword-traps-delete-stale-skillmd-files-plan.md

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/last30days.py

@@ -290,6 +290,13 @@ def main() -> int:
         parser.print_usage(sys.stderr)
         return 2
 
+    if not os.environ.get("LAST30DAYS_SKIP_PREFLIGHT"):
+        from lib import preflight
+        refuse_msg = preflight.check_class_1_trap(topic)
+        if refuse_msg:
+            sys.stderr.write(refuse_msg)
+            return 2
+
     progress = ui.ProgressDisplay(topic, show_banner=True)
     progress.start_processing()