fix(pages): 移除裸 except Exception 改用精确异常类型并加固元素操作防护

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/components/SeatMapDialog.py

@@ -43,9 +43,7 @@ class SeatMapDialog(Dialog):
 
         try:
             self._waitAllPresence(self.SEAT_ITEMS)
-        except (NoSuchElementException, TimeoutException):
-            return None
-        except Exception:
+        except TimeoutException:
             return None
         try:
             seat_el = self._find(By.ID, f"seat_{int(seat_id):03d}")
@@ -58,8 +56,6 @@ class SeatMapDialog(Dialog):
         except (NoSuchElementException, ValueError, TimeoutException,
                 ElementNotInteractableException, StaleElementReferenceException):
             pass
-        except Exception:
-            pass
         try:
             all_seats = self._findAll(*self.SEAT_ITEMS)
             seat_id_upper = seat_id.lstrip('0').upper()
@@ -76,5 +72,3 @@ class SeatMapDialog(Dialog):
         except (NoSuchElementException, TimeoutException,
                 ElementNotInteractableException, StaleElementReferenceException):
             return None
-        except Exception:
-            return None