feat(content): migrate line IDs to NPC-scoped namespace (D-035)

Line IDs in all dialogue and monologue pool files renamed from the
old location-scoped format (e.g. the-terminal_d_039) to the new
NPC-scoped format (e.g. kael-davan_d_001) per the D-035 Sprint 15
amendment.

Changes:
- 20 dialogue pool files across 3 locations renamed
- 14 monologue pool files (detective + smuggler) renamed
- Schema descriptions updated in dialogue/monologue schema files
- Authoring style guide and design docs updated with new examples
- Multi-location NPCs (kael-davan, pc-detective, pc-smuggler) given
  globally unique cross-file sequences to satisfy XREF uniqueness check

The location-scoped scheme already caused a collision (the-terminal_d_039
appearing in multiple NPC files) and would not scale to procedurally
generated NPC populations (D-029). Zero content changes — pure ID
substitution.

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

docs/workshops/test-architecture/hoshe-round2.md

@@ -188,7 +188,7 @@ XREF ERROR: dialogue location "the-warehouse" not in district
 ```
 XREF ERROR: unknown fact_id "investigation.unknown_fact"
   In: campaigns/main/.../dialogue/the-terminal/kael-davan.yaml
-  Line: the-terminal_d_099
+  Line: kael-davan_d_099
   Canonical fact_ids: 42 defined in content/global/knowledge/
 ```
 
@@ -228,7 +228,7 @@ XREF WARNING: npc_count mismatch in transit district
 
 #### Check 8: Dialogue line ID uniqueness within pool
 
-**What:** Each dialogue line has an `id` field (e.g., `the-terminal_d_001`). IDs MUST be unique within each dialogue file.
+**What:** Each dialogue line has an `id` field (e.g., `kael-davan_d_001`). IDs MUST be unique within each dialogue file.
 
 **Where:** `content/campaigns/**/dialogue/**/*.yaml` → `lines[].id`
 
@@ -236,7 +236,7 @@ XREF WARNING: npc_count mismatch in transit district
 
 **Error format:**
 ```
-XREF ERROR: duplicate dialogue line id "the-terminal_d_015"
+XREF ERROR: duplicate dialogue line id "kael-davan_d_015"
   In: campaigns/main/.../dialogue/the-terminal/kael-davan.yaml
   First occurrence: line 167
   Duplicate: line 215