fix(cache): implement query-string-based cache busting

Update the `make_cache_key` function to include the request query string
in the generated key. This allows for manual cache busting by appending
version parameters to redirects.

In the `delete_account` route, replace manual cache deletion logic with
a redirect containing a timestamped nonce. This ensures that the user's
account list and home page views are refreshed without requiring explicit
knowledge of all internal cache keys.

app.py

@@ -74,6 +74,9 @@ def make_cache_key(*args, **kwargs):
     """Generate a cache key based on the user's session and request path."""
     username = session.get('username', 'anonymous')
     path = request.path
+    # Include query string in cache key to bust cache with version parameter
+    if request.query_string:
+        return f"view/{username}/{path}?{request.query_string.decode()}"
     return f"view/{username}/{path}"
 
 @app.before_request
@@ -298,18 +301,13 @@ def delete_account() -> Response:
     account_id = request.form.get("id")
     base_url = app.config["BACKEND_URL"]
     delete_user_account(base_url, session["auth_credentials"], account_id)
-    # Clear cache for user accounts route
-    cache_key = f"view/{session['username']}/accounts"
-    cache.delete(cache_key)
-    # Also clear memoized version for good measure
-    cache.delete_memoized(user_accounts, key_prefix=make_cache_key)
-    # Clear home page cache as well since it shows account stats
-    cache_key_home = f"view/{session['username']}/home"
-    cache.delete(cache_key_home)
     # Run the NPM config update in a background thread to remove the deleted account's redirect
     thread = threading.Thread(target=_update_npm_config_in_background, args=(session["auth_credentials"],))
     thread.start()
-    return redirect(url_for("user_accounts"))
+    # Redirect with a version nonce to bust all caches
+    import time
+    nonce = int(time.time())
+    return redirect(f"{url_for('user_accounts')}?_v={nonce}")
 
 @app.route("/validateAccount", methods=["POST"])
 def validate_account() -> Tuple[Response, int]: