Refactor agent and project modules: replace llm_completion import with litellm, and add metadata file existence check in Project class.

Author: adv-11

weaver/agent.py

@@ -5,8 +5,7 @@
 
 import time
 from datetime import datetime
-from litellm import completion as llm_completion
-
+import litellm
 from weaver.config import get_model_config
 from weaver.exceptions import AgentError
 
@@ -65,7 +64,7 @@ def execute_task(self, task_id: int):
         last_error = None
         for attempt in range(1, 4):
             try:
-                response = llm_completion(
+                response = litellm.llm_completion(
                     model=model_cfg["model"],
                     prompt=prompt,
                     max_tokens=model_cfg.get("max_tokens")

weaver/project.py

@@ -32,6 +32,9 @@ def __init__(self, project_name: str, project_goal: str = None):
             if self.project_dir.exists():
                 raise WeaverError(f"Project '{project_name}' already exists.")
             self.project_dir.mkdir(parents=True)
+            if self.meta_path.exists():
+                raise WeaverError(f"Project metadata file '{self.meta_path}' already exists.")
+            self.project_dir.mkdir(exist_ok=True)
             self.sources_dir.mkdir()
             self.results_dir.mkdir()
             # Save metadata