fix(permissions): avoid false Local Network grants

src/main/ipc/developer-permissions.test.ts

@@ -168,7 +168,7 @@ describe('registerDeveloperPermissionHandlers', () => {
     })
   })
 
-  it('clears the local-network prompt fallback timer when UDP send settles first', async () => {
+  it('keeps the local-network status unknown when UDP send settles without an error', async () => {
     registerDeveloperPermissionHandlers()
 
     const result = getRequestHandler()({}, { id: 'local-network' })
@@ -179,7 +179,7 @@ describe('registerDeveloperPermissionHandlers', () => {
 
     await expect(result).resolves.toEqual({
       id: 'local-network',
-      status: 'granted',
+      status: 'unknown',
       openedSystemSettings: false
     })
     expect(vi.getTimerCount()).toBe(0)

src/main/ipc/developer-permissions.ts

@@ -140,7 +140,8 @@ function triggerLocalNetworkPrompt(): Promise<DeveloperPermissionStatus> {
     }
     function classify(error: Error | null | undefined): DeveloperPermissionStatus {
       if (!error) {
-        return 'granted'
+        // A queued UDP datagram does not prove Local Network access was granted.
+        return 'unknown'
       }
       const code = (error as NodeJS.ErrnoException).code
       return code && LOCAL_NETWORK_DENIAL_CODES.has(code) ? 'denied' : 'unknown'