Created Actions workflows

Author: adamlui

.github/workflows/eslint.yml

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+name: ESLint
+
+on: [push, pull_request]
+
+jobs:
+  eslint:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout repository code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 21
+
+      - name: Install dependencies
+        run: npm ci # instead of install to ensure consistency and determinism in CI/CD workflow
+
+      - name: Run ESLint
+        run: npm run lint

.github/workflows/sync-changes.yml

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+name: Sync * to adamlui/ai-apps/perplexity-omnibox/*
+
+on:
+  push:
+    branches: [main]
+    paths: ["**", "!.*", "!package*json", "!eslint.config*"]
+
+jobs:
+  build:
+    if: (github.repository == 'adamlui/perplexity-omnibox') && (github.event.commits[0].committer.username != 'kudo-sync-bot')
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - name: Checkout adamlui/perplexity-omnibox
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.REPO_SYNC_PAT }}
+          repository: adamlui/perplexity-omnibox
+          path: adamlui/perplexity-omnibox
+
+      - name: Checkout adamlui/ai-apps
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.REPO_SYNC_PAT }}
+          repository: adamlui/ai-apps
+          path: adamlui/ai-apps
+
+      - name: Sync * to adamlui/ai-apps/perplexity-omnibox/*
+        run: |
+          rsync -avhr --delete --exclude={'.*','eslint*','package*json'} \
+            ${{ github.workspace }}/adamlui/perplexity-omnibox/ \
+            ${{ github.workspace }}/adamlui/ai-apps/perplexity-omnibox/
+
+      - name: Escape backticks in commit msg
+        env:
+          COMMIT_MSG: ${{ github.event.head_commit.message }}
+        run: |
+          echo "ESCAPED_MSG<<EOF" >> $GITHUB_ENV
+          echo "$COMMIT_MSG" | sed 's/`/\`/g' >> $GITHUB_ENV
+          echo "EOF" >> $GITHUB_ENV
+      
+      - name: Config committer
+        run: |
+          gpg --batch --import <(echo "${{ secrets.GPG_PRIVATE_KEY }}")
+          git config --global user.name "kudo-sync-bot"
+          git config --global user.email "[email protected]"
+          git config --global user.signingkey  "${{ secrets.GPG_PRIVATE_ID }}"
+
+      - name: Push changes to adamlui/perplexity-omnibox
+        run: |
+          cd ${{ github.workspace }}/adamlui/perplexity-omnibox
+          git add .
+          git commit -S -n -m "$ESCAPED_MSG ↞ [auto-sync from \`adamlui/perplexity-omnibox\`]" || true
+          git push
+
+      - name: Push changes to adamlui/ai-apps
+        run: |
+          cd ${{ github.workspace }}/adamlui/ai-apps
+          git add .
+          git commit -S -n -m "$ESCAPED_MSG ↞ [auto-sync from \`adamlui/perplexity-omnibox\`]" || true
+          git push