Add long-term family NPC intelligence roadmap

Docs/TechnicalDesignDocument.md

@@ -594,9 +594,36 @@ Future persistence design should address:
 - tile package changes;
 - player-owned structures;
 - family/generation data;
+- family and community NPC memory, relationships, teaching history, emotional
+  state, task state, and offline stewardship logs;
 - economy and transaction records;
 - settlement governance records.
 
+## Family, Community NPC, And Offline Stewardship Intelligence
+
+Long-term NPC and family behavior should be built as inspectable simulation
+systems before relying on any generative AI layer.
+
+Core rules:
+
+- The server remains authoritative for NPC choices, movement, resource use,
+  combat, teaching, learning, economy effects, and offline character outcomes.
+- Nearby characters can run fuller behavior/state-tree logic, while distant
+  settlement members use cheaper task simulation and ledger updates.
+- Family and community characters need persistent needs, relationships,
+  memories, skills, roles, emotional state, task state, and contribution logs.
+- Logged-off player characters may contribute locally from their last valid
+  home, claim, or assigned post, but should not explore, learn new skills,
+  complete major projects, accept strategic risk, or gain hidden progression.
+- Core behavior must remain deterministic, debuggable, and functional without
+  model inference.
+- Any AI model layer should be proprietary-first: local or self-hosted where
+  practical, privacy-safe, replaceable, and limited to optional dialogue
+  variation, event summarization, teaching flavor, memory compression, and
+  settlement reports unless explicitly promoted after review.
+- External AI services must not receive private player history, unreleased world
+  state, economy data, or proprietary design context for core gameplay.
+
 ## Multiplayer Strategy
 
 The MVP should prove at least two players on the same server.