init: Kira — AI body double with Honcho memory

Full voice pipeline (Whisper STT -> DeepSeek LLM -> OpenAI TTS),
animated SVG avatar (Live2D-ready), girly-pop UI, lofi music,
timer/notes/pets/wardrobe widgets, 10 background scenes with
particle effects, Honcho cross-session memory.

backend/config.py

@@ -0,0 +1,27 @@
+from pydantic_settings import BaseSettings
+
+class Settings(BaseSettings):
+    # OpenAI (used for STT + TTS)
+    openai_api_key: str = ""
+
+    # DeepSeek (LLM)
+    deepseek_api_key: str = ""
+    deepseek_base_url: str = "https://api.deepseek.com/v1"
+    deepseek_model: str = "deepseek-chat"
+
+    # Honcho (memory)
+    honcho_api_key: str = ""
+    honcho_base_url: str = ""
+
+    # Server
+    host: str = "0.0.0.0"
+    port: int = 8000
+
+    model_config = {
+        "env_file": ".env",
+        "env_file_encoding": "utf-8",
+        "extra": "ignore",
+    }
+
+
+settings = Settings()