Fix bare except patterns in coordinator-api

- Fixed monitoring_dashboard.py: replaced bare except with ValueError, AttributeError
- Fixed cross_chain_bridge_enhanced.py: replaced bare except with Exception (with logging)
- Fixed enterprise_integration.py: replaced bare except with specific exceptions

This starts Phase 3: Exception Handling Improvement

apps/coordinator-api/src/app/routers/monitoring_dashboard.py

@@ -258,7 +258,7 @@ def calculate_overall_metrics(health_data: dict[str, Any]) -> dict[str, Any]:
                 time_str = service_health["response_time"].replace("s", "")
                 total_response_time += float(time_str)
                 response_time_count += 1
-            except:
+            except (ValueError, AttributeError):
                 pass
 
     # Determine overall status

apps/coordinator-api/src/app/services/cross_chain_bridge_enhanced.py

@@ -450,7 +450,9 @@ class CrossChainBridgeService:
                 )
                 self.session.execute(stmt)
                 self.session.commit()
-            except:
+            except Exception:
+                # Database update failed, log but continue
+                logger.warning(f"Failed to update bridge request status to failed: {bridge_request_id}")
                 pass
 
     async def _execute_atomic_swap(self, bridge_request: BridgeRequest) -> None:

apps/coordinator-api/src/app/services/enterprise_integration.py

@@ -392,7 +392,7 @@ class SAPIntegration(ERPIntegration):
                 day = date_value[6:8]
                 return f"{year}-{month}-{day}"
             return date_value
-        except:
+        except (ValueError, IndexError, AttributeError, TypeError):
             return date_value
     
     def _transform_numeric(self, value: str, transform: Dict[str, Any]) -> Union[str, int, float]: