start docs (AI) fix some caching logic

src/routes/routes.py

@@ -1,9 +1,8 @@
 from pathlib import Path
 from src.config.config import Configuration
 from src.rendering.renderer import render_page, render_error_page
-from flask import send_file
+from flask import send_file, request
 from src.rendering.image import generate_thumbnail
-from functools import lru_cache
 import os
 
 
@@ -114,13 +113,15 @@ class RouteManager:
         if file_path.exists():
             # Check to see if the file is an image, if it is, render a thumbnail
             if file_path.suffix.lower() in [".jpg", ".jpeg", ".png", ".gif"]:
+                max_width = request.args.get("max_width", default=2048, type=int)
                 thumbnail_bytes, img_format = generate_thumbnail(
-                    str(file_path), 10, 2048
+                    str(file_path), 10, 2048, max_width
                 )
                 return (
                     thumbnail_bytes,
                     200,
-                    {"Content-Type": f"image/{img_format.lower()}"},
+                    {"Content-Type": f"image/{img_format.lower()}",
+                     "cache-control": "public, max-age=31536000"},
                 )
             return send_file(file_path)
         else: