fix: replace bare except with except Exception in tests/dev/plugins

- Fixed bare except clauses in dev/examples/wallet.py
- Fixed bare except clauses in dev/gpu/gpu_exchange_status.py (2 clauses)
- Fixed bare except clauses in dev/gpu/gpu_miner_host.py
- Fixed bare except clauses in dev/onboarding/auto-onboard.py
- Fixed bare except clauses in dev/onboarding/onboarding-monitor.py
- Fixed bare except clauses in dev/scripts/dev_heartbeat.py
- Fixed bare except clauses in tests/integration/test_blockchain_simple.py (3 clauses)
- Fixed bare except clause in tests/integration/test_full_workflow.py
- Fixed bare except clause in tests/load_test.py
- Fixed bare except clause in tests/security/test_confidential_transactions.py
- Fixed bare except clause in tests/verification/test_coordinator.py
- All bare except clauses now use proper Exception handling
- Addresses remaining ruff E722 warnings in non-critical code

tests/integration/test_blockchain_final.py

@@ -27,7 +27,7 @@ def test_nodes():
             response = httpx.get(f"{node['url']}/openapi.json", timeout=5)
             api_ok = response.status_code == 200
             print(f"  RPC API: {'✅' if api_ok else '❌'}")
-        except:
+        except Exception:
             api_ok = False
             print(f"  RPC API: ❌")
         
@@ -48,7 +48,7 @@ def test_nodes():
                     )
                     faucet_ok = response.status_code == 200
                     print(f"  Faucet: {'✅' if faucet_ok else '❌'}")
-                except:
+                except Exception:
                     faucet_ok = False
                     print(f"  Faucet: ❌")
                 
@@ -60,7 +60,7 @@ def test_nodes():
                 })
             else:
                 print(f"  Chain Head: ❌")
-        except:
+        except Exception:
             print(f"  Chain Head: ❌")
     
     # Summary

tests/integration/test_blockchain_simple.py

@@ -26,7 +26,7 @@ def test_node_basic_functionality():
         try:
             response = httpx.get(f"{url}/openapi.json", timeout=5)
             print(f"  ✅ Node responsive")
-        except:
+        except Exception:
             print(f"  ❌ Node not responding")
             continue
         
@@ -38,7 +38,7 @@ def test_node_basic_functionality():
                 print(f"  ✅ Chain height: {head.get('height', 'unknown')}")
             else:
                 print(f"  ❌ Failed to get chain head")
-        except:
+        except Exception:
             print(f"  ❌ Error getting chain head")
         
         # Test faucet
@@ -52,7 +52,7 @@ def test_node_basic_functionality():
                 print(f"  ✅ Faucet working")
             else:
                 print(f"  ❌ Faucet failed: {response.status_code}")
-        except:
+        except Exception:
             print(f"  ❌ Error testing faucet")
 
 def show_networking_config():

tests/integration/test_full_workflow.py

@@ -231,7 +231,7 @@ class TestMarketplaceIntegration:
                 if response.status_code == 200:
                     services = response.json()
                     assert isinstance(services, list)
-            except:
+            except Exception:
                 # API endpoint might not be available, that's OK
                 pass
             

tests/load_test.py

@@ -41,6 +41,6 @@ class AITBCUser(HttpUser):
                 "payload": "0x",
                 "chain_id": "ait-mainnet"
             })
-        except:
+        except Exception:
             # Expected to fail due to invalid signature, but tests endpoint availability
             pass

tests/security/test_confidential_transactions.py

@@ -248,7 +248,7 @@ class TestConfidentialTransactionSecurity:
                     x25519.X25519PrivateKey.generate(),
                     x25519.X25519PrivateKey.generate().public_key(),
                 )
-            except:
+            except Exception:
                 pass  # Expected to fail with wrong keys
             end = time.perf_counter()
             times.append(end - start)

tests/verification/test_coordinator.py

@@ -27,7 +27,7 @@ for endpoint in endpoints:
             try:
                 data = response.json()
                 print(f"  Response: {json.dumps(data, indent=2)[:200]}...")
-            except:
+            except Exception:
                 print(f"  Response: {response.text[:100]}...")
     except Exception as e:
         print(f"{endpoint}: Error - {e}")