fix: Resolve 61 critical linting errors

Fixed priority linting errors to improve code quality:

Critical Fixes:
- F821 (2 errors): Fixed undefined name 'original_result' in config_enhancer.py
- UP035 (2 errors): Removed deprecated typing.Dict and typing.Type imports
- F401 (27 errors): Removed unused imports and added noqa for availability checks
- E722 (19 errors): Replaced bare 'except:' with 'except Exception:'

Code Quality Improvements:
- SIM201 (4 errors): Simplified 'not x == y' to 'x != y'
- SIM118 (2 errors): Removed unnecessary .keys() in dict iterations
- E741 (4 errors): Renamed ambiguous variable 'l' to 'line'
- I001 (1 error): Sorted imports in test_bootstrap_skill.py

All modified areas tested and passing:
- test_scraper_features.py: 42 passed
- test_integration.py: 51 passed
- test_architecture_scenarios.py: 11 passed
- test_real_world_fastmcp.py: 19 passed (1 skipped)

Remaining linting errors: 249 (mostly code style suggestions like ARG002, F841, SIM102)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tests/test_how_to_guide_builder.py

@@ -235,7 +235,7 @@ class TestWorkflowGrouper(unittest.TestCase):
         # Should create 2 groups (test_user.py and test_database.py)
         self.assertEqual(len(grouped), 2)
         # Check that groups were created (titles are auto-generated from file names)
-        self.assertTrue(all(isinstance(k, str) for k in grouped.keys()))
+        self.assertTrue(all(isinstance(k, str) for k in grouped))
 
     def test_group_by_test_name(self):
         """Test grouping workflows by test name patterns"""