fix: skip lingo.dev i18n automation when API key is not set (#28704)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

.github/workflows/i18n.yml

@@ -10,6 +10,7 @@ concurrency:
 jobs:
   i18n:
     name: Run i18n
+    if: ${{ secrets.CI_LINGO_DOT_DEV_API_KEY != '' }}
     runs-on: blacksmith-2vcpu-ubuntu-2404
     permissions:
       actions: write

packages/lib/server/service/lingoDotDev.ts

@@ -1,13 +1,14 @@
+import { LINGO_DOT_DEV_API_KEY } from "@calcom/lib/constants";
+import logger from "@calcom/lib/logger";
 import type { LocaleCode } from "@lingo.dev/_spec";
 import { LingoDotDevEngine } from "lingo.dev/sdk";
 
-import { LINGO_DOT_DEV_API_KEY } from "@calcom/lib/constants";
-import logger from "@calcom/lib/logger";
-
 export class LingoDotDevService {
-  private static engine = new LingoDotDevEngine({
-    apiKey: LINGO_DOT_DEV_API_KEY,
-  });
+  private static engine = LINGO_DOT_DEV_API_KEY
+    ? new LingoDotDevEngine({
+        apiKey: LINGO_DOT_DEV_API_KEY,
+      })
+    : null;
 
   /**
    * Localizes text from one language to another
@@ -25,8 +26,13 @@ export class LingoDotDevService {
       return null;
     }
 
+    if (!LingoDotDevService.engine) {
+      logger.warn("LingoDotDevService.localizeText() skipped: LINGO_DOT_DEV_API_KEY is not set");
+      return null;
+    }
+
     try {
-      const result = await this.engine.localizeText(text, {
+      const result = await LingoDotDevService.engine.localizeText(text, {
         sourceLocale,
         targetLocale,
       });
@@ -50,8 +56,13 @@ export class LingoDotDevService {
     sourceLocale: string,
     targetLocales: string[]
   ): Promise<string[]> {
+    if (!LingoDotDevService.engine) {
+      logger.warn("LingoDotDevService.batchLocalizeText() skipped: LINGO_DOT_DEV_API_KEY is not set");
+      return [];
+    }
+
     try {
-      const result = await this.engine.batchLocalizeText(text, {
+      const result = await LingoDotDevService.engine.batchLocalizeText(text, {
         // TODO: LocaleCode is hacky, use our locale mapping instead.
         sourceLocale: sourceLocale as LocaleCode,
         targetLocales: targetLocales as LocaleCode[],
@@ -76,8 +87,13 @@ export class LingoDotDevService {
       return texts;
     }
 
+    if (!LingoDotDevService.engine) {
+      logger.warn("LingoDotDevService.localizeTexts() skipped: LINGO_DOT_DEV_API_KEY is not set");
+      return texts;
+    }
+
     try {
-      const result = await this.engine.localizeChat(
+      const result = await LingoDotDevService.engine.localizeChat(
         texts.map((text) => ({ name: "NO_NAME", text: text.trim() })),
         {
           sourceLocale,