fix: Remove empty catch blocks and add error logging

src/backend/database/database.ts

@@ -1480,13 +1480,17 @@ app.get(
       if (status.hasUnencryptedDb) {
         try {
           unencryptedSize = fs.statSync(dbPath).size;
-        } catch {}
+        } catch (error) {
+          databaseLogger.debug("Operation failed, continuing", { error });
+        }
       }
 
       if (status.hasEncryptedDb) {
         try {
           encryptedSize = fs.statSync(encryptedDbPath).size;
-        } catch {}
+        } catch (error) {
+          databaseLogger.debug("Operation failed, continuing", { error });
+        }
       }
 
       res.json({

src/backend/database/routes/users.ts

@@ -935,7 +935,9 @@ router.post("/login", async (req, res) => {
       if (kekSalt.length === 0) {
         await authManager.registerUser(userRecord.id, password);
       }
-    } catch {}
+    } catch (error) {
+      databaseLogger.debug("Operation failed, continuing", { error });
+    }
 
     const dataUnlocked = await authManager.authenticateUser(
       userRecord.id,
@@ -1016,7 +1018,15 @@ router.post("/logout", authenticateJWT, async (req, res) => {
         try {
           const payload = await authManager.verifyJWTToken(token);
           sessionId = payload?.sessionId;
-        } catch (error) {}
+        } catch (error) {
+          authLogger.debug(
+            "Token verification failed during logout (expected if token expired)",
+            {
+              operation: "logout_token_verify_failed",
+              userId,
+            },
+          );
+        }
       }
 
       await authManager.logoutUser(userId, sessionId);

src/backend/ssh/file-manager.ts

@@ -120,7 +120,9 @@ function cleanupSession(sessionId: string) {
   if (session) {
     try {
       session.client.end();
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", { error });
+    }
     clearTimeout(session.timeout);
     delete sshSessions[sessionId];
   }
@@ -663,7 +665,9 @@ app.post("/ssh/file_manager/ssh/connect-totp", async (req, res) => {
     delete pendingTOTPSessions[sessionId];
     try {
       session.client.end();
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", { error });
+    }
     fileLogger.warn("TOTP session timeout before code submission", {
       operation: "file_totp_verify",
       sessionId,

src/backend/ssh/server-stats.ts

@@ -156,7 +156,9 @@ class SSHConnectionPool {
         if (!conn.inUse && now - conn.lastUsed > maxAge) {
           try {
             conn.client.end();
-          } catch {}
+          } catch (error) {
+            sshLogger.debug("Operation failed, continuing", { error });
+          }
           return false;
         }
         return true;
@@ -176,7 +178,9 @@ class SSHConnectionPool {
       for (const conn of connections) {
         try {
           conn.client.end();
-        } catch {}
+        } catch (error) {
+          sshLogger.debug("Operation failed, continuing", { error });
+        }
       }
     }
     this.connections.clear();
@@ -214,7 +218,9 @@ class RequestQueue {
       if (request) {
         try {
           await request();
-        } catch {}
+        } catch (error) {
+          sshLogger.debug("Operation failed, continuing", { error });
+        }
       }
     }
 
@@ -511,7 +517,14 @@ class PollingManager {
         data: metrics,
         timestamp: Date.now(),
       });
-    } catch (error) {}
+    } catch (error) {
+      statsLogger.warn("Failed to collect metrics for host", {
+        operation: "metrics_poll_failed",
+        hostId: host.id,
+        hostName: host.name,
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
   }
 
   stopPollingForHost(hostId: number): void {
@@ -1212,7 +1225,12 @@ async function collectMetrics(host: SSHHostWithCredentials): Promise<{
               txBytes: null,
             });
           }
-        } catch (e) {}
+        } catch (e) {
+          statsLogger.debug("Failed to collect network interface stats", {
+            operation: "network_stats_failed",
+            error: e instanceof Error ? e.message : String(e),
+          });
+        }
 
         let uptimeSeconds: number | null = null;
         let uptimeFormatted: string | null = null;
@@ -1228,7 +1246,12 @@ async function collectMetrics(host: SSHHostWithCredentials): Promise<{
               uptimeFormatted = `${days}d ${hours}h ${minutes}m`;
             }
           }
-        } catch (e) {}
+        } catch (e) {
+          statsLogger.debug("Failed to collect uptime", {
+            operation: "uptime_failed",
+            error: e instanceof Error ? e.message : String(e),
+          });
+        }
 
         let totalProcesses: number | null = null;
         let runningProcesses: number | null = null;
@@ -1270,7 +1293,12 @@ async function collectMetrics(host: SSHHostWithCredentials): Promise<{
           );
           totalProcesses = Number(procCount.stdout.trim()) - 1;
           runningProcesses = Number(runningCount.stdout.trim());
-        } catch (e) {}
+        } catch (e) {
+          statsLogger.debug("Failed to collect process stats", {
+            operation: "process_stats_failed",
+            error: e instanceof Error ? e.message : String(e),
+          });
+        }
 
         let hostname: string | null = null;
         let kernel: string | null = null;
@@ -1286,7 +1314,12 @@ async function collectMetrics(host: SSHHostWithCredentials): Promise<{
           hostname = hostnameOut.stdout.trim() || null;
           kernel = kernelOut.stdout.trim() || null;
           os = osOut.stdout.trim() || null;
-        } catch (e) {}
+        } catch (e) {
+          statsLogger.debug("Failed to collect system info", {
+            operation: "system_info_failed",
+            error: e instanceof Error ? e.message : String(e),
+          });
+        }
 
         const result = {
           cpu: { percent: toFixedNum(cpuPercent, 0), cores, load: loadTriplet },
@@ -1365,7 +1398,9 @@ function tcpPing(
       settled = true;
       try {
         socket.destroy();
-      } catch {}
+      } catch (error) {
+        sshLogger.debug("Operation failed, continuing", { error });
+      }
       resolve(result);
     };
 

src/backend/ssh/tunnel.ts

@@ -217,7 +217,9 @@ function cleanupTunnelResources(
     if (verification?.timeout) clearTimeout(verification.timeout);
     try {
       verification?.conn.end();
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", { error });
+    }
     tunnelVerifications.delete(tunnelName);
   }
 
@@ -282,7 +284,9 @@ function handleDisconnect(
       const verification = tunnelVerifications.get(tunnelName);
       if (verification?.timeout) clearTimeout(verification.timeout);
       verification?.conn.end();
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", { error });
+    }
     tunnelVerifications.delete(tunnelName);
   }
 
@@ -638,7 +642,9 @@ async function connectSSHTunnel(
 
       try {
         conn.end();
-      } catch {}
+      } catch (error) {
+        sshLogger.debug("Operation failed, continuing", { error });
+      }
 
       activeTunnels.delete(tunnelName);
 
@@ -778,7 +784,9 @@ async function connectSSHTunnel(
             const verification = tunnelVerifications.get(tunnelName);
             if (verification?.timeout) clearTimeout(verification.timeout);
             verification?.conn.end();
-          } catch {}
+          } catch (error) {
+            sshLogger.debug("Operation failed, continuing", { error });
+          }
           tunnelVerifications.delete(tunnelName);
         }
 

src/backend/starter.ts

@@ -21,7 +21,11 @@ import { systemLogger, versionLogger } from "./utils/logger.js";
       if (persistentConfig.parsed) {
         Object.assign(process.env, persistentConfig.parsed);
       }
-    } catch {}
+    } catch (error) {
+      systemLogger.debug("Operation failed, continuing", {
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
 
     let version = "unknown";
 

src/backend/utils/auto-ssl-setup.ts

@@ -233,7 +233,11 @@ IP.3 = 0.0.0.0
     let envContent = "";
     try {
       envContent = await fs.readFile(this.ENV_FILE, "utf8");
-    } catch {}
+    } catch (error) {
+      systemLogger.debug("Operation failed, continuing", {
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
 
     let updatedContent = envContent;
     let hasChanges = false;

src/backend/utils/database-file-encryption.ts

@@ -327,7 +327,11 @@ class DatabaseFileEncryption {
             fs.accessSync(envPath, fs.constants.R_OK);
             envFileReadable = true;
           }
-        } catch {}
+        } catch (error) {
+          databaseLogger.debug("Operation failed, continuing", {
+            error: error instanceof Error ? error.message : String(error),
+          });
+        }
 
         databaseLogger.error(
           "Database decryption authentication failed - possible causes: wrong DATABASE_KEY, corrupted files, or interrupted write",
@@ -628,7 +632,11 @@ class DatabaseFileEncryption {
         try {
           fs.accessSync(envPath, fs.constants.R_OK);
           result.environment.envFileReadable = true;
-        } catch {}
+        } catch (error) {
+          databaseLogger.debug("Operation failed, continuing", {
+            error: error instanceof Error ? error.message : String(error),
+          });
+        }
       }
 
       if (

src/backend/utils/lazy-field-encryption.ts

@@ -82,7 +82,11 @@ export class LazyFieldEncryption {
               legacyFieldName,
             );
             return decrypted;
-          } catch {}
+          } catch (error) {
+            databaseLogger.debug("Operation failed, continuing", {
+              error: error instanceof Error ? error.message : String(error),
+            });
+          }
         }
 
         const sensitiveFields = [
@@ -174,7 +178,11 @@ export class LazyFieldEncryption {
               wasPlaintext: false,
               wasLegacyEncryption: true,
             };
-          } catch {}
+          } catch (error) {
+            databaseLogger.debug("Operation failed, continuing", {
+              error: error instanceof Error ? error.message : String(error),
+            });
+          }
         }
         return {
           encrypted: fieldValue,

src/backend/utils/ssh-key-utils.ts

@@ -84,7 +84,11 @@ function detectKeyTypeFromContent(keyContent: string): string {
       } else if (decodedString.includes("1.3.101.112")) {
         return "ssh-ed25519";
       }
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", {
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
 
     if (content.length < 800) {
       return "ssh-ed25519";
@@ -140,7 +144,11 @@ function detectPublicKeyTypeFromContent(publicKeyContent: string): string {
       } else if (decodedString.includes("1.3.101.112")) {
         return "ssh-ed25519";
       }
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", {
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
 
     if (content.length < 400) {
       return "ssh-ed25519";
@@ -242,7 +250,11 @@ export function parseSSHKey(
 
           useSSH2 = true;
         }
-      } catch {}
+      } catch (error) {
+        sshLogger.debug("Operation failed, continuing", {
+          error: error instanceof Error ? error.message : String(error),
+        });
+      }
     }
 
     if (!useSSH2) {
@@ -268,7 +280,11 @@ export function parseSSHKey(
           success: true,
         };
       }
-    } catch {}
+    } catch (error) {
+      sshLogger.debug("Operation failed, continuing", {
+        error: error instanceof Error ? error.message : String(error),
+      });
+    }
 
     return {
       privateKey: privateKeyData,

src/backend/utils/system-crypto.ts

@@ -51,7 +51,15 @@ class SystemCrypto {
             },
           );
         }
-      } catch (fileError) {}
+      } catch (fileError) {
+        // OK: .env file not found or unreadable, will generate new JWT secret
+        databaseLogger.debug(
+          ".env file not accessible, will generate new JWT secret",
+          {
+            operation: "jwt_env_not_found",
+          },
+        );
+      }
 
       await this.generateAndGuideUser();
     } catch (error) {
@@ -102,7 +110,15 @@ class SystemCrypto {
           return;
         } else {
         }
-      } catch (fileError) {}
+      } catch (fileError) {
+        // OK: .env file not found or unreadable, will generate new database key
+        databaseLogger.debug(
+          ".env file not accessible, will generate new database key",
+          {
+            operation: "db_key_env_not_found",
+          },
+        );
+      }
 
       await this.generateAndGuideDatabaseKey();
     } catch (error) {
@@ -140,7 +156,11 @@ class SystemCrypto {
           process.env.INTERNAL_AUTH_TOKEN = tokenMatch[1];
           return;
         }
-      } catch {}
+      } catch (error) {
+        databaseLogger.debug("Operation failed, continuing", {
+          error: error instanceof Error ? error.message : String(error),
+        });
+      }
 
       await this.generateAndGuideInternalAuthToken();
     } catch (error) {

src/ui/desktop/apps/dashboard/Dashboard.tsx

@@ -91,7 +91,9 @@ export function Dashboard({
   try {
     const sidebar = useSidebar();
     sidebarState = sidebar.state;
-  } catch {}
+  } catch (error) {
+    console.error("Dashboard operation failed:", error);
+  }
 
   const topMarginPx = isTopbarOpen ? 74 : 26;
   const leftMarginPx = sidebarState === "collapsed" ? 26 : 8;
@@ -173,7 +175,9 @@ export function Dashboard({
               if (Array.isArray(tunnelConnections)) {
                 totalTunnelsCount += tunnelConnections.length;
               }
-            } catch {}
+            } catch (error) {
+              console.error("Dashboard operation failed:", error);
+            }
           }
         }
         setTotalTunnels(totalTunnelsCount);

src/ui/desktop/apps/host-manager/HostManagerEditor.tsx

@@ -167,7 +167,9 @@ export function HostManagerEditor({
 
         setFolders(uniqueFolders);
         setSshConfigurations(uniqueConfigurations);
-      } catch {}
+      } catch (error) {
+        console.error("Host manager operation failed:", error);
+      }
     };
 
     fetchData();
@@ -196,7 +198,9 @@ export function HostManagerEditor({
 
         setFolders(uniqueFolders);
         setSshConfigurations(uniqueConfigurations);
-      } catch {}
+      } catch (error) {
+        console.error("Host manager operation failed:", error);
+      }
     };
 
     window.addEventListener("credentials:changed", handleCredentialChange);

src/ui/desktop/apps/terminal/Terminal.tsx

@@ -189,7 +189,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
             terminal as { refresh?: (start: number, end: number) => void }
           ).refresh(0, terminal.rows - 1);
         }
-      } catch {}
+      } catch (error) {
+        console.error("Terminal operation failed:", error);
+      }
     }
 
     function performFit() {
@@ -331,7 +333,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
               scheduleNotify(cols, rows);
               hardRefresh();
             }
-          } catch {}
+          } catch (error) {
+            console.error("Terminal operation failed:", error);
+          }
         },
         refresh: () => hardRefresh(),
       }),
@@ -738,7 +742,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
           await navigator.clipboard.writeText(text);
           return;
         }
-      } catch {}
+      } catch (error) {
+        console.error("Terminal operation failed:", error);
+      }
       const textarea = document.createElement("textarea");
       textarea.value = text;
       textarea.style.position = "fixed";
@@ -758,7 +764,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
         if (navigator.clipboard && navigator.clipboard.readText) {
           return await navigator.clipboard.readText();
         }
-      } catch {}
+      } catch (error) {
+        console.error("Terminal operation failed:", error);
+      }
       return "";
     }
 
@@ -855,7 +863,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
             const pasteText = await readTextFromClipboard();
             if (pasteText) terminal.paste(pasteText);
           }
-        } catch {}
+        } catch (error) {
+          console.error("Terminal operation failed:", error);
+        }
       };
       element?.addEventListener("contextmenu", handleContextMenu);
 

src/ui/desktop/authentication/ElectronLoginForm.tsx

@@ -63,7 +63,9 @@ export function ElectronLoginForm({
             }
           }
         }
-      } catch (err) {}
+      } catch (err) {
+        console.error("Authentication operation failed:", err);
+      }
     };
 
     window.addEventListener("message", handleMessage);
@@ -190,8 +192,12 @@ export function ElectronLoginForm({
               );
             }
           }
-        } catch (err) {}
+        } catch (err) {
-      } catch (err) {}
+          console.error("Authentication operation failed:", err);
+        }
+      } catch (err) {
+        console.error("Authentication operation failed:", err);
+      }
     };
 
     const handleError = () => {

src/ui/desktop/authentication/ElectronServerConfig.tsx

@@ -37,7 +37,9 @@ export function ElectronServerConfig({
       if (config?.serverUrl) {
         setServerUrl(config.serverUrl);
       }
-    } catch {}
+    } catch (error) {
+      console.error("Server config operation failed:", error);
+    }
   };
 
   const handleSaveConfig = async () => {

src/ui/desktop/user/UserProfile.tsx

@@ -54,7 +54,9 @@ async function handleLogout() {
               },
               serverOrigin,
             );
-          } catch (err) {}
+          } catch (err) {
+            console.error("User profile operation failed:", err);
+          }
         }
       }
     }

src/ui/hooks/useDragToSystemDesktop.ts

@@ -48,7 +48,9 @@ export function useDragToSystemDesktop({ sshSessionId }: UseDragToSystemProps) {
           store.put({ handle: dirHandle }, "lastSaveDir");
         };
       }
-    } catch {}
+    } catch (error) {
+      console.error("Drag operation failed:", error);
+    }
   };
 
   const isFileSystemAPISupported = () => {

src/ui/mobile/apps/terminal/Terminal.tsx

@@ -101,7 +101,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
             terminal as { refresh?: (start: number, end: number) => void }
           ).refresh(0, terminal.rows - 1);
         }
-      } catch {}
+      } catch (error) {
+        console.error("Terminal operation failed:", error);
+      }
     }
 
     function performFit() {
@@ -175,7 +177,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
               scheduleNotify(cols, rows);
               hardRefresh();
             }
-          } catch {}
+          } catch (error) {
+            console.error("Terminal operation failed:", error);
+          }
         },
         refresh: () => hardRefresh(),
       }),
@@ -225,7 +229,9 @@ export const Terminal = forwardRef<TerminalHandle, SSHTerminalProps>(
               `\r\n[${msg.message || t("terminal.disconnected")}]`,
             );
           }
-        } catch {}
+        } catch (error) {
+          console.error("Terminal operation failed:", error);
+        }
       });
 
       ws.addEventListener("close", (event) => {

src/ui/mobile/apps/terminal/TerminalKeyboard.tsx

@@ -110,7 +110,9 @@ export function TerminalKeyboard({
         if (navigator.vibrate) {
           navigator.vibrate(20);
         }
-      } catch {}
+      } catch (error) {
+        console.error("Keyboard operation failed:", error);
+      }
 
       onSendInput(input);
     },

src/ui/mobile/authentication/Auth.tsx

@@ -52,7 +52,9 @@ function postJWTToWebView() {
         timestamp: Date.now(),
       }),
     );
-  } catch (error) {}
+  } catch (error) {
+    console.error("Auth operation failed:", error);
+  }
 }
 
 interface AuthProps extends React.ComponentProps<"div"> {