fix: update version strings and test expectations from 3.2.0 to 3.3.0

Fix CI failures: version hardcoded in _version.py fallbacks and
test assertions (test_package_structure, test_cli_paths) still
referenced 3.2.0 after the version bump.

tests/test_cli_paths.py

@@ -138,7 +138,7 @@ class TestUnifiedCLIEntryPoints(unittest.TestCase):
 
             # Should show version
             output = result.stdout + result.stderr
-            self.assertIn("3.2.0", output)
+            self.assertIn("3.3.0", output)
 
         except FileNotFoundError:
             # If skill-seekers is not installed, skip this test