fix: resolve lint and type checking issues

- Add per-file ignores for S101 (assert statements) in test files
- Add per-file ignore for PERF203 (try-except in loop) in lite_agent.py
- Replace assert with proper error handling in lite_agent.py
- Replace eval() with ast.literal_eval() for security compliance

Co-Authored-By: João <joao@crewai.com>

pyproject.toml

@@ -133,6 +133,10 @@ select = [
 ]
 ignore = ["E501"]  # ignore line too long
 
+[tool.ruff.lint.per-file-ignores]
+"tests/**/*.py" = ["S101"]  # Allow assert statements in tests
+"src/crewai/lite_agent.py" = ["PERF203"]  # Allow try-except in loop for LLM parsing
+
 [tool.mypy]
 exclude = ["src/crewai/cli/templates", "tests"]