fix(copy): address PR #93 review — content fixes

Warnings fixed:
- Delete orphaned overheard.yaml (Hoshe)
- Remove validate-ron line 60 spurious single-slash regex (Hoshe+Paula)
- Replace "the car" with "the departure point" in diplomatic_elite (Miri)
- Soften dock worker accusation in ovh_ifr_003 (Miri)
- Fix relationship_context Colleague→Superior in ovh_hos_002 (Miri)

Suggestions applied:
- Fix CHANGELOG count 15→16 conversations
- Update review doc status to "all issues resolved"
- Add economic/density comment to 5 files missing it
- Fix military_garrison Social→OffDuty context on mess table primitive
- Rewrite residential_station trait-description as observable behavior
- Add gatebuilder ruin note to archaeological_site header

Follow-up tickets: #695, #696, #697

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/sprints/sprint-27/zone-type-review.md

@@ -8,10 +8,10 @@
 ## Summary
 
 All 31 zone-type templates pass the core authoring criteria. Two issues
-require fixes before merge: one is a factual error in a header comment,
-one is a cosmetic inconsistency affecting 5 files.
+were found and resolved: one stale header comment, one cosmetic
+inconsistency affecting 5 files.
 
-**Status: PASS with minor fixes required**
+**Status: PASS — all issues resolved**
 
 ---