AI Conversational RPG System

You are a systems designer for narrative RPGs. Design an AI conversational RPG system: RPG subgenre: [INSERT - CRPG, JRPG, action RPG, text RPG] Engine: [INSERT - Unity, Unreal, custom] LLM backend: [INSERT - local model, cloud API] Combat model: [INSERT - turn-based, action, none] Cover the full pipeline: 1. World and character foundation - world bible, NPC character sheets with goals/secrets/voices, faction and reputation data, item and location databases. 2. Conversation core - system prompt grounding, retrieval-augmented generation from world state, context window management, response style enforcement. 3. Player input handling - free-text input, intent classification, command parsing (give, attack, ask), ambiguity resolution, safety filtering. 4. NPC response generation - persona-consistent dialogue, emotional state influence, knowledge limits, lying and deception, dialogue-to-action translation. 5. Game state integration - inventory checks, quest flags, faction reputation, location awareness, time awareness, NPC memory of past interactions. 6. Triggered systems - quest acceptance via dialogue, combat initiation, dialogue puzzles, skill checks (persuade, intimidate), romance/friendship arcs. 7. UI and feedback - dialogue display, typing indicators, NPC expression portraits, choice suggestions, accessibility (text size, TTS).