fix(content): PR #59 review — stale moods, orphaned IDs, tenure, fact_id

Address review comments from Hoshe, Paula, and Miri:
- Update mood vocabulary in 3 docs (line-pool-format.md §6.5,
  style-guide §11, content-directory-structure.md Appendix B) from
  pre-Sprint 14 values to current D-035 enum
- Fix worked example IDs in line-pool-format.md §3.5 to match
  actual the-last-shift kael-davan sequence (_015, _024, _026)
- Fix Section 5.1 restart note to describe multi-location continuity
- Fix style-guide §16 worked example: dock-worker_d_071 → kael-davan_d_076
- Fix stale mood reference in style-guide §16 Step 3
- Fix orphaned the-terminal_d_040 in maintenance-tech.yaml comment
- Fix orphaned the-terminal_d_008/018 in smuggler-inventory.yaml
- Fix Lera tenure: twelve → eighteen years (bar-owner_d_018)
- Fix fact_id: location.surveillance_gaps → investigation.surveillance_gaps
  in ring-operative.yaml (2 occurrences)
- Fix NPC name: Lera Osk → Lera Sessik in bar-owner.yaml comment
- Fix mood line format example in style-guide §5

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

docs/design/content-directory-structure.md

@@ -586,7 +586,7 @@ For quick reference during authoring. Authoritative source: `content/global/enum
 
 **Topics (9):** `colleague`, `routine`, `cargo`, `money`, `trust`, `danger`, `institution`, `personal`, `investigation`
 
-**Moods (8):** `fond`, `comfortable`, `worried`, `suspicious`, `analytical`, `conflicted`, `concerned`, `relieved`
+**Moods (8):** `anxious`, `frustrated`, `content`, `suspicious`, `warm`, `hostile`, `relieved`, `focused`
 
 **Access Tiers (5):** `public`, `insider`, `authority`, `peer`, `hostile`