fix: replace bare except with except Exception in critical files

- Fixed bare except clauses in blockchain-node p2p_network.py
- Fixed bare except clauses in blockchain-node rpc/router.py
- Fixed bare except clauses in coordinator-api migration scripts
- Fixed bare except clause in coordinator-api agent_integration_router.py
- Addresses ruff E722 warnings in critical application code
- Note: 170 bare except clauses remain in tests/dev/plugins (lower priority)

apps/blockchain-node/src/aitbc_chain/p2p_network.py

@@ -557,7 +557,7 @@ class P2PNetworkService:
             writer.close()
             try:
                 await writer.wait_closed()
-            except:
+            except Exception:
                 pass
 
     def _get_gpu_count(self) -> int:

apps/blockchain-node/src/aitbc_chain/rpc/router.py

@@ -113,7 +113,7 @@ def _normalize_transaction_data(tx_data: Dict[str, Any], chain_id: str) -> Dict[
         try:
             import json
             payload = json.loads(payload)
-        except:
+        except Exception:
             payload = {}
     
     if not isinstance(payload, dict):

apps/coordinator-api/scripts/migrate_complete.py

@@ -86,7 +86,7 @@ def migrate_all_data():
                     if isinstance(value, str):
                         try:
                             value = json.loads(value)
-                        except:
+                        except Exception:
                             pass
                 elif col_name in ['balance', 'price', 'average_job_duration_ms'] and value is not None:
                     value = Decimal(str(value))

apps/coordinator-api/scripts/migrate_to_postgresql.py

@@ -276,7 +276,7 @@ def migrate_data():
                     if isinstance(value, str):
                         try:
                             value = json.loads(value)
-                        except:
+                        except Exception:
                             pass
                 elif key in ['balance', 'price', 'average_job_duration_ms']:
                     # Handle numeric fields

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

@@ -454,7 +454,7 @@ async def get_production_dashboard(
             try:
                 monitoring_manager = AgentMonitoringManager(session)
                 metrics = await monitoring_manager.get_deployment_metrics(config.id)
-            except:
+            except Exception:
                 metrics = {"aggregated_metrics": {}}
 
             dashboard_data["deployments"].append(

scripts/fix_bare_except.py

@@ -0,0 +1,76 @@
+#!/usr/bin/env python3
+"""Fix bare except clauses by replacing 'except:' with 'except Exception:'"""
+
+import ast
+import sys
+from pathlib import Path
+
+
+def fix_bare_except(file_path):
+    """Fix bare except clauses in a Python file"""
+    try:
+        with open(file_path, 'r') as f:
+            content = f.read()
+        
+        # Parse the file to check for syntax errors
+        try:
+            ast.parse(content)
+        except SyntaxError:
+            print(f"Skipping {file_path}: syntax error")
+            return False
+        
+        # Split into lines
+        lines = content.split('\n')
+        modified = False
+        new_lines = []
+        
+        i = 0
+        while i < len(lines):
+            line = lines[i]
+            stripped = line.strip()
+            
+            # Check if this is a bare except statement
+            if stripped == 'except:':
+                # Check if the previous line is a try block
+                if i > 0 and 'try:' in lines[i-1]:
+                    # Replace with except Exception:
+                    new_lines.append(line.replace('except:', 'except Exception:'))
+                    modified = True
+                else:
+                    new_lines.append(line)
+            else:
+                new_lines.append(line)
+            
+            i += 1
+        
+        if modified:
+            with open(file_path, 'w') as f:
+                f.write('\n'.join(new_lines))
+            print(f"Fixed {file_path}")
+            return True
+        return False
+    except Exception as e:
+        print(f"Error processing {file_path}: {e}")
+        return False
+
+
+def main():
+    """Main function"""
+    if len(sys.argv) > 1:
+        root = Path(sys.argv[1])
+    else:
+        root = Path('.')
+    
+    # Find all Python files
+    py_files = list(root.rglob('*.py'))
+    
+    fixed_count = 0
+    for py_file in py_files:
+        if fix_bare_except(py_file):
+            fixed_count += 1
+    
+    print(f"\nFixed {fixed_count} files")
+
+
+if __name__ == '__main__':
+    main()