refactor: remove interactive OAuth tool and update Docker/README configurations

src/strava_mcp_server/strava_client.py

@@ -37,7 +37,7 @@ class StravaClient:
     async def get_valid_token(self) -> str:
         """Returns a valid access token, refreshing it if necessary."""
         if not self.refresh_token:
-            raise ValueError("No Strava refresh token found. Please run the 'get_new_oauth_token' MCP tool to authenticate first.")
+            raise ValueError("No Strava refresh token found. Please run 'uv run auth' on your local machine to authenticate first.")
             
         if not self.access_token or time.time() > self.expires_at - 60:
             await self._refresh_access_token()