feat: use claude-haiku-4-5 as default Anthropic model

Author: nicoloboschi

hindsight-api-slim/hindsight_api/config.py

@@ -354,7 +354,7 @@ def normalize_config_dict(config: dict[str, Any]) -> dict[str, Any]:
 # Provider-specific default models
 PROVIDER_DEFAULT_MODELS = {
     "openai": "gpt-4o-mini",
-    "anthropic": "claude-haiku-4-5-20251001",
+    "anthropic": "claude-haiku-4-5",
     "gemini": "gemini-2.5-flash",
     "groq": "openai/gpt-oss-120b",
     "minimax": "MiniMax-M2.7",