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/design/opening-hook-content.md

@@ -32,7 +32,7 @@ All smuggler openings share:
 These lines fire when the smuggler enters The Terminal at session start. 3-4 lines available; engine selects one based on seed variant.
 
 ```yaml
-- id: transit_m_s_open_001
+- id: pc-smuggler_m_s_001
   character: smuggler
   trigger: enter_location
   location: the-terminal
@@ -40,7 +40,7 @@ These lines fire when the smuggler enters The Terminal at session start. 3-4 lin
   mood: [content, routine]
   tags: [opening_hook, canonical_anchor]
 
-- id: transit_m_s_open_002
+- id: pc-smuggler_m_s_002
   character: smuggler
   trigger: enter_location
   location: the-terminal
@@ -48,7 +48,7 @@ These lines fire when the smuggler enters The Terminal at session start. 3-4 lin
   mood: [routine, aware]
   tags: [opening_hook]
 
-- id: transit_m_s_open_003
+- id: pc-smuggler_m_s_003
   character: smuggler
   trigger: enter_location
   location: the-terminal
@@ -56,7 +56,7 @@ These lines fire when the smuggler enters The Terminal at session start. 3-4 lin
   mood: [routine, observant]
   tags: [opening_hook]
 
-- id: transit_m_s_open_004
+- id: pc-smuggler_m_s_004
   character: smuggler
   trigger: enter_location
   location: the-terminal
@@ -70,7 +70,7 @@ These lines fire when the smuggler enters The Terminal at session start. 3-4 lin
 These fire when the smuggler sees Kael on the dock floor. Critical FRIEND establishment lines.
 
 ```yaml
-- id: transit_m_s_open_010
+- id: pc-smuggler_m_s_010
   character: smuggler
   trigger: observe_npc
   target: npc:kael-davan
@@ -82,7 +82,7 @@ These fire when the smuggler sees Kael on the dock floor. Critical FRIEND establ
   mood: [content, fond]
   tags: [opening_hook, friend_phase_1, canonical_anchor]
 
-- id: transit_m_s_open_011
+- id: pc-smuggler_m_s_011
   character: smuggler
   trigger: observe_npc
   target: npc:kael-davan
@@ -104,7 +104,7 @@ These fire when the smuggler sees Kael on the dock floor. Critical FRIEND establ
 **Operational context line (observe_anomaly — schedule board):**
 
 ```yaml
-- id: transit_m_s_open_020
+- id: pc-smuggler_m_s_020
   character: smuggler
   trigger: observe_anomaly
   location: the-terminal
@@ -131,7 +131,7 @@ Kael greets the smuggler warmly. Asks about the weekend. Makes a dry comment abo
 **Absence lines (observe_npc, failed — Kael's station empty):**
 
 ```yaml
-- id: transit_m_s_open_030
+- id: pc-smuggler_m_s_030
   character: smuggler
   trigger: observe_anomaly
   location: the-terminal
@@ -140,7 +140,7 @@ Kael greets the smuggler warmly. Asks about the weekend. Makes a dry comment abo
   tags: [opening_hook, variant_b]
   notes: "Phase 1 tell: Kael's routine is so established that absence is noted before alarm."
 
-- id: transit_m_s_open_031
+- id: pc-smuggler_m_s_031
   character: smuggler
   trigger: time_idle
   location: the-terminal
@@ -169,7 +169,7 @@ Kael arrives slightly disheveled, slightly out of breath. Brief explanation —
 **Environmental read lines:**
 
 ```yaml
-- id: transit_m_s_open_040
+- id: pc-smuggler_m_s_040
   character: smuggler
   trigger: observe_npc
   target: npc:voss
@@ -177,7 +177,7 @@ Kael arrives slightly disheveled, slightly out of breath. Brief explanation —
   mood: [aware, cautious]
   tags: [opening_hook, variant_c]
 
-- id: transit_m_s_open_041
+- id: pc-smuggler_m_s_041
   character: smuggler
   trigger: observe_npc
   target: npc:voss
@@ -204,7 +204,7 @@ Kael arrives slightly disheveled, slightly out of breath. Brief explanation —
 **Container flag lines:**
 
 ```yaml
-- id: transit_m_s_open_050
+- id: pc-smuggler_m_s_050
   character: smuggler
   trigger: observe_anomaly
   location: the-terminal
@@ -212,7 +212,7 @@ Kael arrives slightly disheveled, slightly out of breath. Brief explanation —
   mood: [operational, concerned]
   tags: [opening_hook, variant_d]
 
-- id: transit_m_s_open_051
+- id: pc-smuggler_m_s_051
   character: smuggler
   trigger: observe_anomaly
   location: the-terminal
@@ -245,7 +245,7 @@ All detective openings share:
 Lines that fire when the detective enters their starting location. Selection based on seed variant.
 
 ```yaml
-- id: transit_m_d_open_001
+- id: pc-detective_m_d_001
   character: detective
   trigger: enter_location
   location: the-terminal
@@ -253,7 +253,7 @@ Lines that fire when the detective enters their starting location. Selection bas
   mood: [professional, observant]
   tags: [opening_hook, canonical_anchor]
 
-- id: transit_m_d_open_002
+- id: pc-detective_m_d_002
   character: detective
   trigger: enter_location
   location: the-terminal
@@ -262,7 +262,7 @@ Lines that fire when the detective enters their starting location. Selection bas
   tags: [opening_hook, canonical_anchor]
   notes: "Companion line to open_001 — these fire in sequence on Variant A/B/C."
 
-- id: transit_m_d_open_003
+- id: pc-detective_m_d_003
   character: detective
   trigger: enter_location
   location: the-last-shift
@@ -270,7 +270,7 @@ Lines that fire when the detective enters their starting location. Selection bas
   mood: [professional, curious]
   tags: [opening_hook, variant_a_bar]
 
-- id: transit_m_d_open_004
+- id: pc-detective_m_d_004
   character: detective
   trigger: enter_location
   location: the-terminal
@@ -284,7 +284,7 @@ Lines that fire when the detective enters their starting location. Selection bas
 Critical FRIEND establishment for the detective.
 
 ```yaml
-- id: transit_m_d_open_010
+- id: pc-detective_m_d_010
   character: detective
   trigger: observe_npc
   target: npc:sera-venn
@@ -296,7 +296,7 @@ Critical FRIEND establishment for the detective.
   mood: [relieved, warm]
   tags: [opening_hook, friend_phase_1, canonical_anchor]
 
-- id: transit_m_d_open_011
+- id: pc-detective_m_d_011
   character: detective
   trigger: observe_npc
   target: npc:sera-venn
@@ -322,7 +322,7 @@ Critical FRIEND establishment for the detective.
 **Bar arrival line:**
 
 ```yaml
-- id: transit_m_d_open_020
+- id: pc-detective_m_d_020
   character: detective
   trigger: enter_location
   location: the-last-shift
@@ -334,7 +334,7 @@ Critical FRIEND establishment for the detective.
 **Lera read (public NPC, establishing social texture):**
 
 ```yaml
-- id: transit_m_d_open_021
+- id: pc-detective_m_d_021
   character: detective
   trigger: observe_npc
   target: npc:lera-sessik
@@ -363,7 +363,7 @@ Sera gives a brief district overview — who the regulars are, what the Terminal
 **Terminal read line:**
 
 ```yaml
-- id: transit_m_d_open_030
+- id: pc-detective_m_d_030
   character: detective
   trigger: enter_location
   location: the-terminal
@@ -375,7 +375,7 @@ Sera gives a brief district overview — who the regulars are, what the Terminal
 **Voss approach (first adversarial NPC):**
 
 ```yaml
-- id: transit_m_d_open_031
+- id: pc-detective_m_d_031
   character: detective
   trigger: observe_npc
   target: npc:voss
@@ -406,7 +406,7 @@ Standard question options: "Thank you, I'll need those." / "Tell me about your s
 **Investigative focus line:**
 
 ```yaml
-- id: transit_m_d_open_040
+- id: pc-detective_m_d_040
   character: detective
   trigger: enter_location
   location: the-terminal
@@ -414,7 +414,7 @@ Standard question options: "Thank you, I'll need those." / "Tell me about your s
   mood: [analytical, focused]
   tags: [opening_hook, variant_c]
 
-- id: transit_m_d_open_041
+- id: pc-detective_m_d_041
   character: detective
   trigger: observe_anomaly
   location: the-terminal
@@ -436,7 +436,7 @@ Standard question options: "Thank you, I'll need those." / "Tell me about your s
 **Escort read lines:**
 
 ```yaml
-- id: transit_m_d_open_050
+- id: pc-detective_m_d_050
   character: detective
   trigger: observe_npc
   target: npc:torek-lintar
@@ -444,7 +444,7 @@ Standard question options: "Thank you, I'll need those." / "Tell me about your s
   mood: [professional, curious]
   tags: [opening_hook, variant_d]
 
-- id: transit_m_d_open_051
+- id: pc-detective_m_d_051
   character: detective
   trigger: observe_npc
   target: npc:torek-lintar