fix: resolve CI linting issues

src/templates/__init__.py

@@ -1 +1,23 @@
-# Templates for documentation generation
+"""Template module for documentation generation."""
+
+import os
+
+from jinja2 import Environment, FileSystemLoader
+
+TEMPLATES_DIR = os.path.join(os.path.dirname(__file__))
+
+def startswith(s, prefix):
+    return s.startswith(prefix) if s else False
+
+env = Environment(
+    loader=FileSystemLoader(TEMPLATES_DIR),
+    trim_blocks=True,
+    lstrip_blocks=True,
+)
+env.filters["startswith"] = startswith
+
+HTML_TEMPLATE = env.get_template("html_template.html")
+MARKDOWN_TEMPLATE = env.get_template("markdown_template.md")
+JSON_TEMPLATE = env.get_template("json_template.json")
+
+__all__ = ["HTML_TEMPLATE", "MARKDOWN_TEMPLATE", "JSON_TEMPLATE", "env"]