Remove deprecated routes file and move HTML prettifying logic to hooks module

routes/__init__.py

@@ -2,4 +2,4 @@ from flask import Blueprint
 
 main = Blueprint('main', __name__)
 
-from . import inventory, user, worklog, settings, index, search
+from . import inventory, user, worklog, settings, index, search, hooks

routes/hooks.py

@@ -0,0 +1,18 @@
+from bs4 import BeautifulSoup
+from flask import current_app as app
+
+from . import main
+
+@main.after_request
+def prettify_html_response(response):
+    if app.debug and response.content_type.startswith("text/html"):
+        try:
+            soup = BeautifulSoup(response.get_data(as_text=True), 'html5lib')
+            pretty_html = soup.prettify()
+
+            response.set_data(pretty_html.encode("utf-8")) # type: ignore
+            response.headers['Content-Type'] = 'text/html; charset=utf-8'
+
+        except Exception as e:
+            print(f"⚠️ Prettifying failed: {e}")
+    return response