From bbb63c605d7db3e18d88566d40807e3eeff643b7 Mon Sep 17 00:00:00 2001
From: bk86a <41694587+bk86a@users.noreply.github.com>
Date: Mon, 23 Feb 2026 21:29:05 +0100
Subject: [PATCH] fix: add csv.Error to _load_estimates_from_csv exception
 handling

Malformed CSV files (NUL bytes, parser corruption) would bubble up and
crash startup instead of logging a warning and continuing without
estimates. Restores graceful degradation for this optional input path.
---
 app/data_loader.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/data_loader.py b/app/data_loader.py
index 47209e6..eb024d3 100644
--- a/app/data_loader.py
+++ b/app/data_loader.py
@@ -496,7 +496,7 @@ def _load_estimates_from_csv(csv_path: Path) -> bool:
         if count:
             logger.info("Loaded %d estimates from %s", count, csv_path)
         return count > 0
-    except (OSError, KeyError, ValueError) as exc:
+    except (OSError, KeyError, ValueError, csv.Error) as exc:
         logger.warning("Failed to load estimates from CSV: %s", exc)
         return False