refactor: Finalize survival stack - Frostfall → CC Survival Mode

Survival decisions (2026-03-18):
- REMOVED Frostfall: No SkyrimNet triggers, scripted overhead
- ADDED Creation Kit Survival Mode: Native engine, exposed functions, faster
- DISABLED Last Seed follower needs: Use CC exposed functions instead
  Avoids bloating script load with parallel need tracking

Also updated:
- AI Layer section to reflect current inference architecture
  (Euryale-70B + Gemma-27B + Qwen3-VL routing)
- Infrastructure notes aligned with inference_architecture_plan.txt

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

gameplay_stack.txt

@@ -1,5 +1,5 @@
 # NimmerSky Gameplay Stack
-# Compiled: 2026-03-15
+# Compiled: 2026-03-15 | Updated: 2026-03-18
 # Session with Chrysalis - Planning the gameplay layer for first real playthrough
 
 ================================================================================
@@ -16,9 +16,13 @@
                                SURVIVAL STACK
 ================================================================================
 
-Core Survival (Chesko Trinity + Extensions):
-- Campfire and Frostfall - Unofficial SSE Update    # Cold exposure, camping, shelter
-- Last Seed - Survival Needs and Diseases           # Hunger, thirst, fatigue, disease
+Core Survival:
+- Creation Kit Survival Mode                        # Native warmth/cold/hunger/fatigue
+  - NATIVE engine integration = faster than scripted mods
+  - Exposes functions for SkyrimNet triggers
+  - No Papyrus update loop overhead
+- Campfire                                          # Camping, shelter, crafting
+- Last Seed - Survival Needs and Diseases           # Disease system, deeper needs
 - Skills of the Wild - New Campfire Survival Skill Trees  # Progression in survival
 
 Hunting & Resources:
@@ -30,10 +34,19 @@ Mental Health:
 Hygiene:
 - Bathing in Skyrim - Renewed                       # Cleanliness affects NPC reactions
 
+DECISIONS (2026-03-18):
+- REMOVED: Frostfall
+  - Reason: No working SkyrimNet triggers for Frostfall events
+  - Creation Kit Survival Mode is native, runs faster, has exposed functions
+- DISABLED: Last Seed follower needs system
+  - Reason: Avoid bloat - followers don't need parallel need tracking
+  - Use Creation Kit exposed functions for follower survival instead
+  - Keeps script load lean
+
 NOTES:
-- Last Seed followers EAT and DRINK - party management!
-- Disease system spreads through party
+- Disease system (Last Seed) still spreads through party
 - Synergizes with SkyrimNet - NPCs comment on your state
+- Native CC Survival = SkyrimNet can hook warmth/cold events directly
 
 ================================================================================
                                COMBAT STACK
@@ -163,9 +176,10 @@ Main Goal:
 
 Already Installed:
 - SkyrimNet                                       # The brain
-  - Magidonia 24B on Theia (Blackwell 98GB)
-  - Endpoint: 10.0.30.21:31002
-  - MCP Server for in-game actions
+  - See inference_architecture_plan.txt for full routing
+  - Dialogue: Euryale-70B on Theia:31001
+  - Structured JSON: Gemma-27B on Dioscuri:31004
+  - Vision: Qwen3-VL-8B on Dioscuri:31005
   - Memory system with vector embeddings
   - 5000 memories per actor
   - Event perception (40+ event types)
@@ -174,6 +188,7 @@ TTS:
 - Piper                                           # Voice synthesis
   - Race-specific voices
   - Pronunciation dictionary
+  - Narration: DISABLED (dialogue only)
 
 STT:
 - Enabled                                         # Voice input to talk to NPCs
@@ -182,25 +197,23 @@ OStim Integration:
 - OStimNet                                        # AI can trigger intimate scenes
 - SeverActions - SkyrimNet Action Pack            # Action integration
 
-TODO - Diary JSON Fix:
-- Function Gemma 270M available on Theia          # /data/models/function-gemma/
-- Pipeline: Magidonia (creative) -> Function Gemma (JSON format)
-- Tiny model = instant formatting
+RESOLVED (2026-03-17):
+- Diary JSON now handled by Gemma-27B (structured_outputs: true)
+- 27B models follow JSON schemas reliably - no pipeline needed
 
 ================================================================================
                          INFRASTRUCTURE NOTES
 ================================================================================
 
 THEIA (10.0.30.21) - Blackwell 98GB:
-- Primary inference server
-- Magidonia 24B for SkyrimNet
-- Function Gemma 270M for structured output
-- Qwen3-32B-128K for high-context tasks
-- Nemotron-3-Nano-30B available
+- Port 31001: Euryale-70B (dialogue, creative)
+- Ollama active
 
 DIOSCURI (10.0.30.22) - Twin RTX 4000 Ada (40GB):
-- Secondary inference
-- Overflow / specialized tasks
+- Port 31004: Gemma-27B-abliterated (structured JSON, combat, memory)
+- Port 31005: Qwen3-VL-8B-abliterated (vision/OmniSight)
+
+See inference_architecture_plan.txt for full routing table.
 
 Default SkyrimNet config uses paid OpenRouter APIs
 YOUR config uses self-hosted = FREE GAMING
@@ -234,12 +247,14 @@ COMBAT:
 [ ] Movesets (choose favorites)
 
 SURVIVAL:
+[x] Creation Kit Survival Mode (native warmth/cold)
 [x] Campfire
-[x] Last Seed
+[x] Last Seed (follower needs DISABLED - use CC exposed functions)
 [x] Skills of the Wild
 [x] Simple Hunting Overhaul
 [x] Stress and Fear
 [x] Bathing in Skyrim
+[ ] Frostfall - REMOVED (no SkyrimNet triggers, CC Survival is native & faster)
 
 SIMONRIM:
 [x] Adamant