diff --git a/src/shared/command-executor/execute-hook-command.ts b/src/shared/command-executor/execute-hook-command.ts
index d4ded4a55f..c33a4561cc 100644
--- a/src/shared/command-executor/execute-hook-command.ts
+++ b/src/shared/command-executor/execute-hook-command.ts
@@ -71,7 +71,9 @@ export async function executeHookCommand(
       stderr += data.toString();
     });
 
-    proc.stdin?.on("error", () => {});
+    proc.stdin?.on("error", (stdinErr) => {
+      // Ignore stdin errors - process may have already exited
+    });
     proc.stdin?.write(stdin);
     proc.stdin?.end();
 
@@ -100,13 +102,16 @@ export async function executeHookCommand(
         if (!isWin32 && proc.pid) {
           try {
             process.kill(-proc.pid, signal);
-          } catch {
+          } catch (pgErr) {
+            // Process group kill failed, try direct kill
             proc.kill(signal);
           }
         } else {
           proc.kill(signal);
         }
-      } catch {}
+      } catch (killErr) {
+        // Process may already be dead
+      }
     };
 
     const timeoutTimer = setTimeout(() => {
diff --git a/src/shared/spawn-with-windows-hide.ts b/src/shared/spawn-with-windows-hide.ts
index 7da9ed0865..7835e885dd 100644
--- a/src/shared/spawn-with-windows-hide.ts
+++ b/src/shared/spawn-with-windows-hide.ts
@@ -61,7 +61,9 @@ function wrapNodeProcess(proc: ChildProcess): SpawnedProcess {
         }
 
         proc.kill(signal)
-      } catch {}
+      } catch (killErr) {
+        // Process may already be dead
+      }
     },
   }
 }
diff --git a/src/tools/lsp/lsp-client-transport.ts b/src/tools/lsp/lsp-client-transport.ts
index d4590262bd..875379a1f1 100644
--- a/src/tools/lsp/lsp-client-transport.ts
+++ b/src/tools/lsp/lsp-client-transport.ts
@@ -109,7 +109,9 @@ export class LSPClientTransport {
             this.stderrBuffer.shift()
           }
         }
-      } catch {}
+      } catch (err) {
+        // Silently ignore stderr read errors - stream may close during process shutdown
+      }
     }
     read()
   }
@@ -157,7 +159,9 @@ export class LSPClientTransport {
       try {
         this.sendNotification("shutdown", {})
         this.sendNotification("exit")
-      } catch {}
+      } catch (err) {
+        // Ignore shutdown errors - connection may already be closed
+      }
       this.connection.dispose()
       this.connection = null
     }
@@ -184,9 +188,13 @@ export class LSPClientTransport {
             proc.kill("SIGKILL")
             // Wait briefly for SIGKILL to take effect
             await Promise.race([proc.exited, new Promise<void>((resolve) => setTimeout(resolve, 1000))])
-          } catch {}
+          } catch (sigkillErr) {
+            // SIGKILL may fail if process already terminated
+          }
         }
-      } catch {}
+      } catch (stopErr) {
+        // Process cleanup errors are logged but don't prevent cleanup
+      }
     }
     this.processExited = true
     this.diagnosticsStore.clear()
diff --git a/src/tools/lsp/lsp-client.ts b/src/tools/lsp/lsp-client.ts
index 4785909cc4..5a2d3cfe24 100644
--- a/src/tools/lsp/lsp-client.ts
+++ b/src/tools/lsp/lsp-client.ts
@@ -103,7 +103,9 @@ export class LSPClient extends LSPClientConnection {
       if (result && typeof result === "object" && "items" in result) {
         return result as { items: Diagnostic[] }
       }
-    } catch {}
+    } catch (diagErr) {
+      // Diagnostic request failed, fall back to cached diagnostics
+    }
 
     return { items: this.diagnosticsStore.get(uri) ?? [] }
   }
diff --git a/src/tools/lsp/lsp-process.ts b/src/tools/lsp/lsp-process.ts
index 358c5c7e5b..23c0939c9a 100644
--- a/src/tools/lsp/lsp-process.ts
+++ b/src/tools/lsp/lsp-process.ts
@@ -126,7 +126,9 @@ function wrapNodeProcess(proc: ChildProcess): UnifiedProcess {
         } else {
           proc.kill()
         }
-      } catch {}
+      } catch (killErr) {
+        // Process may already be dead
+      }
     },
   }
 }
diff --git a/src/tools/lsp/lsp-server.ts b/src/tools/lsp/lsp-server.ts
index 69a004edc6..1a1824daad 100644
--- a/src/tools/lsp/lsp-server.ts
+++ b/src/tools/lsp/lsp-server.ts
@@ -77,7 +77,9 @@ class LSPServerManager {
         // Stale init can permanently block subsequent calls (e.g., LSP process hang)
         try {
           await managed.client.stop();
-        } catch {}
+        } catch (stopErr) {
+          // Ignore stop errors during stale init cleanup
+        }
         this.clients.delete(key);
         managed = undefined;
       }
@@ -86,11 +88,13 @@ class LSPServerManager {
       if (managed.initPromise) {
         try {
           await managed.initPromise;
-        } catch {
+        } catch (initErr) {
           // Failed init should not keep the key blocked forever.
           try {
             await managed.client.stop();
-          } catch {}
+          } catch (stopErr) {
+            // Ignore stop errors after failed init
+          }
           this.clients.delete(key);
           managed = undefined;
         }
@@ -104,7 +108,9 @@ class LSPServerManager {
         }
         try {
           await managed.client.stop();
-        } catch {}
+        } catch (stopErr) {
+          // Ignore stop errors when cleaning up dead client
+        }
         this.clients.delete(key);
       }
     }
@@ -130,7 +136,9 @@ class LSPServerManager {
       this.clients.delete(key);
       try {
         await client.stop();
-      } catch {}
+      } catch (stopErr) {
+        // Ignore stop errors after init failure
+      }
       throw error;
     }
     const m = this.clients.get(key);