enable image translation in co-op workflow

Pass Azure AI Vision credentials to Co-op Translator, translate Markdown plus images, trigger on source image changes, and include generated image translations in translation PRs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: DanWahlin

.github/workflows/co-op-translator.yml

@@ -7,16 +7,22 @@ on:
       - main
     paths:
       - "**/*.md"
+      - "**/*.png"
+      - "**/*.jpg"
+      - "**/*.jpeg"
+      - "**/*.gif"
+      - "**/*.svg"
       - "!translations/**"
+      - "!translated_images/**"
       - "!.github/**"
 
 permissions:
   contents: write
   pull-requests: write
 
 jobs:
-  translate-markdown:
-    name: Translate Markdown
+  translate-content:
+    name: Translate Markdown and Images
     runs-on: ubuntu-latest
 
     env:
@@ -27,6 +33,8 @@ jobs:
       AZURE_OPENAI_MODEL_NAME: ${{ secrets.AZURE_OPENAI_MODEL_NAME }}
       AZURE_OPENAI_CHAT_DEPLOYMENT_NAME: ${{ secrets.AZURE_OPENAI_CHAT_DEPLOYMENT_NAME }}
       AZURE_OPENAI_API_VERSION: ${{ secrets.AZURE_OPENAI_API_VERSION }}
+      AZURE_AI_SERVICE_API_KEY: ${{ secrets.AZURE_AI_SERVICE_API_KEY }}
+      AZURE_AI_SERVICE_ENDPOINT: ${{ secrets.AZURE_AI_SERVICE_ENDPOINT }}
       OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
       OPENAI_ORG_ID: ${{ secrets.OPENAI_ORG_ID }}
       OPENAI_CHAT_MODEL_ID: ${{ secrets.OPENAI_CHAT_MODEL_ID }}
@@ -48,9 +56,9 @@ jobs:
           python -m pip install --upgrade pip
           python -m pip install co-op-translator
 
-      - name: Translate Markdown
+      - name: Translate Markdown and images
         run: |
-          translate -l "$TRANSLATION_LANGUAGES" -md -y --repo-url "https://github.com/github/copilot-cli-for-beginners.git"
+          translate -l "$TRANSLATION_LANGUAGES" -md -img -y --repo-url "https://github.com/github/copilot-cli-for-beginners.git"
 
       - name: Normalize and review translations
         run: |
@@ -69,12 +77,13 @@ jobs:
           commit-message: "Update translations via Co-op Translator"
           title: "Update translations via Co-op Translator"
           body: |
-            This PR updates Markdown translations generated by Co-op Translator.
+            This PR updates Markdown and image translations generated by Co-op Translator.
 
-            Generated content is available in the `translations/` directory.
+            Generated content is available in the `translations/` and `translated_images/` directories.
           branch: update-translations
           base: main
           labels: translation, automated-pr
           delete-branch: true
           add-paths: |
             translations/
+            translated_images/