Fix linting errors and remove duplicate templates/lib directory

Linting fixes:
- UP047: Use modern type parameter syntax for generic functions
- UP038/UP040: Use X | Y syntax instead of Union/tuple in type hints
- C414: Remove unnecessary list() calls in sorted()
- RUF001: Replace ambiguous unicode character with ASCII
- F841: Remove unused variable
- F821: Add missing statistics import
- W291: Remove trailing whitespace

Removed templates/lib (duplicate of templates/python/lib)

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

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

Author: aegeiger

client-sdks/openapi/patch_api_hierarchy.py

@@ -98,10 +98,9 @@ def patch_api_file(api_file: Path, child_tag: str, package_name: str) -> bool:
 
     # Check if already patched
     import_line = f"from {package_name}.api.{child_module} import {child_class}\n"
-    property_pattern = f"self.{child_snake}:"
 
     if any(import_line.strip() in line for line in lines):
-        print(f"  ℹ Already patched: {child_snake}")
+        print(f"  Already patched: {child_snake}")
         return False
 
     # Find class definition line
@@ -223,7 +222,7 @@ def patch_llama_stack_client(client_file: Path, pairs: list[tuple[str, str]]) ->
         child_snake = to_snake_case(first_pair[1])
         test_line = f"self.{parent_snake}.{child_snake} = self.{child_snake}"
         if any(test_line in line for line in lines):
-            print("  ℹ LlamaStackClient already patched")
+            print("  LlamaStackClient already patched")
             return False
 
     # Get indentation from the comment line itself (count whitespace before '#')

client-sdks/openapi/process_openapi_hierarchy.py

@@ -67,7 +67,7 @@ def get_children_from_hierarchy(tag: str, hierarchy: dict) -> list[str]:
         return []
 
     # The children are the keys in the nested dict
-    return sorted(list(hierarchy[tag].keys()))
+    return sorted(hierarchy[tag].keys())
 
 
 def convert_oneof_const_to_enum(schema):
@@ -223,9 +223,9 @@ def process_openapi(input_file: str, output_file: str, hierarchy_file: str) -> N
     # Write api_hierarchy to file
     hierarchy_data = {
         "api_hierarchy": api_hierarchy,
-        "all_tags": sorted(list(all_tags)),
-        "tags_with_endpoints": sorted(list(tags_with_endpoints)),
-        "tags_without_endpoints": sorted(list(tags_without_endpoints)),
+        "all_tags": sorted(all_tags),
+        "tags_with_endpoints": sorted(tags_with_endpoints),
+        "tags_without_endpoints": sorted(tags_without_endpoints),
     }
 
     with open(hierarchy_file, "w") as f: