Ep12 publish, caller prompt overhaul, favicon, publish fixes, website updates

- Reworked caller prompt: edgy/flirty personality, play along with host bits
- Bumped caller token budget (200-550 range, was 150-450)
- Added 20 layered/morally ambiguous caller stories
- Valentine's Day awareness in seasonal context
- Default LLM model: claude-sonnet-4-5 (was claude-3-haiku)
- Publish: SCP-based SQL transfer (fixes base64 encoding on NAS)
- Favicons: added .ico, 48px, 192px PNGs for Google search results
- Website: button layout cleanup, privacy page, ep12 transcript
- Control panel: channel defaults match audio_settings.json
- Disabled OP3 permanently (YouTube ingest issues on large files)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/services/llm.py

@@ -7,14 +7,15 @@ from ..config import settings
 
 # Available OpenRouter models
 OPENROUTER_MODELS = [
-    # Best for natural dialog (ranked)
+    # Default
+    "anthropic/claude-sonnet-4-5",
+    # Best for natural dialog
+    "x-ai/grok-4-fast",
     "minimax/minimax-m2-her",
     "mistralai/mistral-small-creative",
-    "x-ai/grok-4-fast",
     "deepseek/deepseek-v3.2",
-    # Updated standard models
+    # Other
     "anthropic/claude-haiku-4.5",
-    "anthropic/claude-sonnet-4-5",
     "google/gemini-2.5-flash",
     "openai/gpt-4o-mini",
     "openai/gpt-4o",