fix: extract ollama_url normalization into shared utility (#508)

Co-authored-by: Kimi Agent <kimi@timmy.local>
Co-committed-by: Kimi Agent <kimi@timmy.local>

src/config.py

@@ -10,6 +10,11 @@ from pydantic_settings import BaseSettings, SettingsConfigDict
 APP_START_TIME: _datetime = _datetime.now(UTC)
 
 
+def normalize_ollama_url(url: str) -> str:
+    """Replace localhost with 127.0.0.1 to avoid IPv6 resolution delays."""
+    return url.replace("localhost", "127.0.0.1")
+
+
 class Settings(BaseSettings):
     """Central configuration — all env-var access goes through this class."""
 
@@ -19,6 +24,11 @@ class Settings(BaseSettings):
     # Ollama host — override with OLLAMA_URL env var or .env file
     ollama_url: str = "http://localhost:11434"
 
+    @property
+    def normalized_ollama_url(self) -> str:
+        """Return ollama_url with localhost replaced by 127.0.0.1."""
+        return normalize_ollama_url(self.ollama_url)
+
     # LLM model passed to Agno/Ollama — override with OLLAMA_MODEL
     # qwen3:30b is the primary model — better reasoning and tool calling
     # than llama3.1:8b-instruct while still running locally on modest hardware.
@@ -392,7 +402,7 @@ def check_ollama_model_available(model_name: str) -> bool:
         import json
         import urllib.request
 
-        url = settings.ollama_url.replace("localhost", "127.0.0.1")
+        url = settings.normalized_ollama_url
         req = urllib.request.Request(
             f"{url}/api/tags",
             method="GET",