fix(server): PR #132 review round 2 — 14 actionable comments addressed

Blockers (4):
- Wire cargo deny check into pre-pr-server (was dead config) (#1)
- ConfirmBookmark idempotency guard: SimError ProtocolError on retry (#2)
- D-080 amendment: transfer_npc_knowledge retained-but-dormant honest doc (#3)
- SelectedBookmark v0.2 transient scope; save/load deferred to #863 (#4)

Issues (8):
- ConfirmBookmark validation tests: unknown id, invalid location,
  valid path, double-confirm guard (#5)
- snapshot_with_bookmark_catalog fixture for client #618 decode tests (#6)
- generate_brands: replace 5 raw .unwrap() with eprintln+exit pattern (#7)
- npc_knowledge_transfer.rs: stale run_npc_conversations refs cleaned (#8)
- monologue.rs: residual D-078 "overheard conversations" doc removed (#9)
- 5 test files: orphan blank lines from removed conversation_* fields (#10)
- BookmarkCatalog: add PartialEq, Eq derives (matches sibling) (#11)

Nits (2):
- culture_tag doc: describe BookmarkRegistry::build_catalog behavior,
  remove "until #679 lands" placeholder (#13)
- generate_brands seed=1 canonical comment (#14)

Follow-ups filed:
- #862 — BookmarkPlugin::new(registry) injection (#12 deferred)
- #863 — Wire SelectedBookmark into SaveState (Sprint 37)

Pre-pr-server: fmt clean, clippy clean, deny clean, build clean.
nextest save_io failures pre-existing parallelism issue (sequential
cargo test --lib passes 20/20).

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

decisions/perception.md

@@ -424,7 +424,8 @@ How the player observes and interacts with the world: camera, fog, line-of-sight
 - **Raised by:** Workshop — unanimous
 - **Dissent:** None
 - **Implements:** Ticket #548
-- **Cross-reference:** [D-041](architecture.md#d-041-knowledge-graph-data-model), [D-083](#d-083-contradiction-detection-pipeline), [D-078](#d-078-overheard-npc-conversation--passive-dialogue-panel-with-occlusion-filter) (D-078 scrapped per R-012; knowledge propagation system remains active independently)
+- **Cross-reference:** [D-041](architecture.md#d-041-knowledge-graph-data-model), [D-083](#d-083-contradiction-detection-pipeline), [D-078](#d-078-overheard-npc-conversation--passive-dialogue-panel-with-occlusion-filter) (D-078 scrapped per R-012; `transfer_npc_knowledge` retained for Phase 5 rewire — see Amendment 2026-04-19)
+- **Amendment (2026-04-19, R-012 / #848):** D-078 was scrapped (R-012) and the `run_npc_conversations` system was deleted in #848. The `transfer_npc_knowledge` system is **retained in-tree for Phase 5 rewire** but no longer fires in production — its `Added<NpcConversation>` trigger is now only inserted by test fixtures. The design (trust-gated transfer, dual-mutable KG access, `KnowsOf` confidence cap, `disclosure_blocked` honoring) is preserved; Phase 5 will wire a new proximity/dialogue trigger in its place. Until then, treat the system as dormant and guard against assuming it runs.
 
 ### D-081: Unprompted Disclosure Design
 - **Date:** 2026-02-24