Warnings fixed:
- contraband.rs: scan event now always emits even when NPC already
knows (was skipped by early `continue`). Contract matches doc.
- test_world/mod.rs: ScanEventBuffer added to player spawn bundle
so check_contraband_scan doesn't silently no-op in gauntlet mode.
- npc/mod.rs → simulation/mod.rs: moved check_contraband_scan
registration to SimulationPlugin (operates on player inventory and
snapshot pipeline, consistent with process_talk_interaction).
Suggestions addressed:
- cross_room_transitions.rs T1: clarified standalone position vs
constants.rs observer position in comment.
- dialogue.rs: Vec<&str> dedup replaced with BTreeSet<&str> for
deterministic iteration (project convention).
- contraband.rs: added test for multiple simultaneous ScanAuthority
NPCs in range (564 tests total).
- dialogue.rs: doc-comment on relationship_to_trust explaining
KnowledgeConfidence ordering and Suspects default.
- cross_room_transitions.rs T5: noted direct KG API usage vs full
perception system.
- sprint_gauntlet.rs: documented intentional Contentment { level: 0 }.
- content_scaling.rs: noted GAUNTLET_NPC_COUNT is manually maintained.
- contraband.rs: doc-comment on cross-plugin registration rationale.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>