Update seed handling: log fixed seed usage; adjust default seed and temperature in config

pr_agent/algo/ai_handlers/litellm_ai_handler.py

@@ -132,7 +132,8 @@ class LiteLLMAIHandler(BaseAiHandler):
             seed = get_settings().config.get("seed", -1)
             if temperature > 0 and seed >= 0:
                 raise ValueError("Seed is not supported with temperature > 0")
-            elif seed > 0:
+            elif seed >= 0:
+                get_logger().info(f"Using fixed seed of {seed}")
                 kwargs["seed"] = get_settings().config.seed
 
             if self.repetition_penalty:

pr_agent/settings/configuration.toml

@@ -27,8 +27,8 @@ output_relevant_configurations=false
 large_patch_policy = "clip" # "clip", "skip"
 is_auto_command=false
 # seed
-seed=0 # set positive value to fix the seed
-temperature=0
+seed=-1 # set positive value to fix the seed (and ensure temperature=0)
+temperature=0.2
 
 [pr_reviewer] # /review #
 # enable/disable features