diff --git a/src/renderer/src/lib/monaco-setup.ts b/src/renderer/src/lib/monaco-setup.ts
index 6d7adef78bd..a8ee26fb5cf 100644
--- a/src/renderer/src/lib/monaco-setup.ts
+++ b/src/renderer/src/lib/monaco-setup.ts
@@ -31,6 +31,19 @@ globalThis.MonacoEnvironment = {
   }
 }
 
+// Why: Monaco's built-in TypeScript worker runs in isolation without filesystem
+// access, so it cannot resolve imports to project files that aren't open as
+// editor models. This produces false "Cannot find module" diagnostics for every
+// import statement. Ignoring specific TS diagnostic codes (e.g., 2307, 2792)
+// removes this noise while keeping type checking, auto-complete, and basic
+// validation fully functional for local symbols.
+monaco.languages.typescript.typescriptDefaults.setDiagnosticsOptions({
+  diagnosticCodesToIgnore: [2307, 2792]
+})
+monaco.languages.typescript.javascriptDefaults.setDiagnosticsOptions({
+  diagnosticCodesToIgnore: [2307, 2792]
+})
+
 // Configure Monaco to use the locally bundled editor instead of CDN
 loader.config({ monaco })