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>

server/tests/serialization.rs

@@ -27,7 +27,6 @@ fn test_snapshot(tick: u64, entities: Vec<VisibleEntity>) -> ObserverSnapshot {
         blocked_entities: vec![],
         scan_events: vec![],
         sound_events: vec![],
-
         follow_state: None,
         character_pressure: None,
         rng_seed: None,
@@ -292,7 +291,6 @@ fn snapshot_v2_fields_roundtrip() {
         blocked_entities: vec![],
         scan_events: vec![],
         sound_events: vec![],
-
         follow_state: None,
         character_pressure: None,
         rng_seed: None,
@@ -1453,7 +1451,6 @@ fn serde_default_fields_fill_in_when_missing_from_wire() {
         "blocked_entities": [],
         "scan_events": [],
         "sound_events": [],
-
         "follow_state": null,
         "rng_seed": null
     });