diff --git a/.github/workflows/crowdin-sync.yml b/.github/workflows/crowdin-sync.yml
index 2c17a99c..00e99807 100644
--- a/.github/workflows/crowdin-sync.yml
+++ b/.github/workflows/crowdin-sync.yml
@@ -2,6 +2,8 @@ name: Crowdin Sync
 
 on:
   workflow_dispatch:
+  schedule:
+    - cron: "17 */6 * * *"
   push:
     branches:
       - main
@@ -9,9 +11,15 @@ on:
     paths:
       - "crowdin.yml"
       - "locales/zh-CN/*.json"
+      - "prompts/zh-CN/**/*.prompt"
+
+permissions:
+  contents: write
+  pull-requests: write
 
 jobs:
-  sync:
+  sync-current-branch:
+    if: github.event_name != 'schedule'
     runs-on: ubuntu-24.04
 
     steps:
@@ -23,10 +31,46 @@ jobs:
           upload_sources: true
           upload_translations: false
           download_translations: true
+          localization_branch_name: l10n_${{ github.ref_name }}
           create_pull_request: true
           pull_request_title: "chore(i18n): sync Crowdin translations"
           pull_request_body: "Automated translation sync from Crowdin."
+          pull_request_base_branch_name: ${{ github.ref_name }}
           commit_message: "chore(i18n): sync Crowdin translations"
         env:
+          GITHUB_TOKEN: ${{ github.token }}
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}
+
+  sync-scheduled-branches:
+    if: github.event_name == 'schedule'
+    runs-on: ubuntu-24.04
+    strategy:
+      fail-fast: false
+      matrix:
+        base_branch:
+          - main
+          - r-dev
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ matrix.base_branch }}
+      - name: Sync scheduled translations with Crowdin
+        uses: crowdin/github-action@v2
+        with:
+          config: crowdin.yml
+          skip_ref_checkout: true
+          upload_sources: true
+          upload_translations: false
+          download_translations: true
+          localization_branch_name: l10n_${{ matrix.base_branch }}
+          create_pull_request: true
+          pull_request_title: "chore(i18n): sync Crowdin translations"
+          pull_request_body: "Automated translation sync from Crowdin."
+          pull_request_base_branch_name: ${{ matrix.base_branch }}
+          commit_message: "chore(i18n): sync Crowdin translations"
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
           CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
           CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}
diff --git a/.github/workflows/i18n-validate.yml b/.github/workflows/i18n-validate.yml
index cc64dd16..3db4bfb5 100644
--- a/.github/workflows/i18n-validate.yml
+++ b/.github/workflows/i18n-validate.yml
@@ -4,16 +4,22 @@ on:
   pull_request:
     paths:
       - "locales/**/*.json"
+      - "prompts/**/*.prompt"
       - "scripts/i18n_validate.py"
       - "src/common/i18n/**/*.py"
+      - "src/common/prompt_i18n.py"
+      - "src/prompt/prompt_manager.py"
   push:
     branches:
       - main
       - r-dev
     paths:
       - "locales/**/*.json"
+      - "prompts/**/*.prompt"
       - "scripts/i18n_validate.py"
       - "src/common/i18n/**/*.py"
+      - "src/common/prompt_i18n.py"
+      - "src/prompt/prompt_manager.py"
 
 jobs:
   validate: