chore: remove sync-preview job from sync-from-public workflow

.github/workflows/sync-from-public.yml

@@ -108,102 +108,3 @@ jobs:
           fi
         env:
           GH_TOKEN: ${{ steps.app-token.outputs.token }}
-
-  sync-preview:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Generate GitHub App Token
-        id: app-token
-        uses: actions/create-github-app-token@v1
-        with:
-          app-id: ${{ vars.APP_ID }}
-          private-key: ${{ secrets.APP_PRIVATE_KEY }}
-
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-          token: ${{ steps.app-token.outputs.token }}
-
-      - name: Configure Git
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-
-      - name: Fetch public preview
-        run: |
-          git remote add public https://github.com/aws/agentcore-cli.git
-          git fetch public preview
-
-      - name: Sync preview with public/preview
-        run: |
-          git checkout -B preview origin/preview
-
-          # Check if public/preview is already merged
-          if git merge-base --is-ancestor public/preview HEAD; then
-            echo "✅ preview is already up to date with public/preview"
-            exit 0
-          fi
-
-          # Merge but exclude .github/workflows/ (GITHUB_TOKEN lacks workflow permission)
-          if git merge public/preview --no-commit --no-ff; then
-            git checkout HEAD -- .github/workflows/ 2>/dev/null || true
-            git commit -m "chore: sync preview with public/preview"
-            git push origin preview
-            echo "✅ preview synced successfully"
-          else
-            echo "⚠️  Conflict detected in preview"
-
-            # Capture conflicted files before aborting
-            conflicted_files=$(git diff --name-only --diff-filter=U 2>/dev/null || echo "Unable to determine conflicted files")
-            git merge --abort
-
-            # Check if a sync PR already exists
-            existing_pr=$(gh pr list --base "preview" --search "Merge public/preview" --state open --json number --jq '.[0].number' 2>/dev/null || echo "")
-
-            if [ -n "$existing_pr" ]; then
-              echo "ℹ️  PR #$existing_pr already exists, skipping"
-              exit 0
-            fi
-
-            conflict_branch="sync-conflict-preview-$(date +%Y%m%d-%H%M%S)"
-            git checkout -b "$conflict_branch"
-
-            git merge public/preview --no-commit --no-ff || true
-            git checkout HEAD -- .github/workflows/ 2>/dev/null || true
-            git add -A
-            git commit -m "chore: sync preview with public/preview (conflicts present)
-
-          This automated sync detected merge conflicts that require manual resolution.
-
-          Source: public/preview (https://github.com/aws/agentcore-cli)
-          Target: preview
-
-          Please resolve conflicts and merge this PR." || true
-
-            git push origin "$conflict_branch"
-
-            gh pr create \
-              --title "🔀 [Sync Conflict] Merge public/preview → preview" \
-              --body "## Automated Sync Conflict
-
-          This PR was automatically created because merging \`public/preview\` into \`preview\` encountered conflicts.
-
-          **Source:** \`preview\` from [aws/agentcore-cli](https://github.com/aws/agentcore-cli)
-          **Target:** \`preview\`
-
-          ### Action Required
-          1. \`git fetch origin && git checkout $conflict_branch\`
-          2. Resolve merge conflicts
-          3. \`git add . && git commit\`
-          4. \`git push origin $conflict_branch\`
-          5. Merge this PR
-
-          ### Files with Conflicts
-          \`\`\`
-          $conflicted_files
-          \`\`\`" \
-              --base "preview" \
-              --head "$conflict_branch" || echo "⚠️  Failed to create PR"
-          fi
-        env:
-          GH_TOKEN: ${{ steps.app-token.outputs.token }}