Schema now lists all models including locally available models

New tool to list all models `listmodels`
Integration test to for all the different combinations of API keys
Tweaks to codereview prompt for a better quality input from Claude
Fixed missing 'low' severity in codereview

tools/__init__.py

@@ -6,6 +6,7 @@ from .analyze import AnalyzeTool
 from .chat import ChatTool
 from .codereview import CodeReviewTool
 from .debug import DebugIssueTool
+from .listmodels import ListModelsTool
 from .precommit import Precommit
 from .refactor import RefactorTool
 from .testgen import TestGenerationTool
@@ -18,6 +19,7 @@ __all__ = [
     "DebugIssueTool",
     "AnalyzeTool",
     "ChatTool",
+    "ListModelsTool",
     "Precommit",
     "RefactorTool",
     "TestGenerationTool",