fix: resolve CI failures for PR #10944

- Remove unused barrel file (src/integrations/terminal/index.ts) to fix knip check
- Fix Windows path test in OutputInterceptor.test.ts by using path.normalize()
- Add missing translations for terminal.outputPreviewSize settings to all 17 locales

Author: hannesrudolph

src/integrations/terminal/__tests__/OutputInterceptor.test.ts

@@ -32,7 +32,7 @@ describe("OutputInterceptor", () => {
 	beforeEach(() => {
 		vi.clearAllMocks()
 
-		storageDir = "/tmp/test-storage"
+		storageDir = path.normalize("/tmp/test-storage")
 
 		// Setup mock write stream
 		mockWriteStream = {