style: apply ruff formatting to all files

Formatted 14 files to comply with ruff formatting rules:
- Consistent code style across codebase
- Improved readability
- All formatting checks now pass

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

tests/conftest.py

@@ -5,7 +5,6 @@ This file is automatically loaded by pytest and provides
 shared fixtures available to all test modules.
 """
 
-
 import pytest
 
 

tests/unit/test_cli_install.py

@@ -138,7 +138,9 @@ class TestInstallCommands:
         expected = ["agent", "index-repo", "recommend", "research"]
 
         for expected_cmd in expected:
-            assert expected_cmd in commands, f"Expected command '{expected_cmd}' not found"
+            assert expected_cmd in commands, (
+                f"Expected command '{expected_cmd}' not found"
+            )
 
 
 class TestInstallCommandsEdgeCases:

tests/unit/test_confidence.py

@@ -60,7 +60,9 @@ class TestConfidenceChecker:
 
         confidence = checker.assess(context)
 
-        assert 0.7 <= confidence < 0.9, f"Expected medium confidence 0.7-0.9, got {confidence}"
+        assert 0.7 <= confidence < 0.9, (
+            f"Expected medium confidence 0.7-0.9, got {confidence}"
+        )
         assert confidence == 0.7, "Should be exactly 70%"
 
     def test_confidence_checks_recorded(self, sample_context):