ci(export): add e2e packed export build verification to pr checks

.github/workflows/export-testing.yml

@@ -6,12 +6,8 @@ name: Export Testing
 on:
   push:
     branches: [main]
-    paths:
-      - "apps/builder/src/export/**"
   pull_request:
     branches: [main]
-    paths:
-      - "apps/builder/src/export/**"
 
 permissions:
   contents: read
@@ -99,3 +95,70 @@ jobs:
           name: export-test-results
           path: apps/builder/test-results
           retention-days: 5
+
+  e2e-export:
+    runs-on: ubuntu-latest
+    name: E2E Export – ${{ matrix.chain }}
+    permissions:
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        chain: [evm, solana, stellar]
+        node-version: [22.x]
+
+    steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@ec9f2d5744a09debf3a187a3f4f675c53b671911 # v2.13.0
+        with:
+          egress-policy: audit
+
+      - name: Check if app creds exist (base repo only)
+        id: has-app
+        run: |
+          present=true
+          if [ "${{ github.event.pull_request.head.repo.fork || false }}" = "true" ]; then present=false; fi
+          if [ -z "${{ vars.GH_APP_ID }}" ] || [ -z "${{ secrets.GH_APP_PRIVATE_KEY }}" ]; then present=false; fi
+          echo "present=$present" >> "$GITHUB_OUTPUT"
+
+      - uses: actions/create-github-app-token@af35edadc00be37caa72ed9f3e6d5f7801bfdf09 # v1.11.7
+        id: gh-app-token
+        if: steps.has-app.outputs.present == 'true'
+        with:
+          app-id: ${{ vars.GH_APP_ID }}
+          private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
+
+      - name: Select token
+        id: auth
+        run: |
+          if [ "${{ steps.has-app.outputs.present }}" = "true" ]; then
+            echo "token=${{ steps.gh-app-token.outputs.token }}" >> "$GITHUB_OUTPUT"
+          else
+            echo "token=${{ github.token }}" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Prepare pre-requisites
+        uses: ./.github/actions/prepare
+        with:
+          token: ${{ steps.auth.outputs.token }}
+
+      - name: Configure npm authentication for npm registry
+        run: |
+          echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}" >> ~/.npmrc
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Build all packages
+        run: pnpm -r build
+        env:
+          NODE_OPTIONS: "--max-old-space-size=8192"
+
+      - name: Run packed export e2e test (${{ matrix.chain }})
+        run: node apps/builder/src/export/cli/export-app.cjs export --env packed -c ${{ matrix.chain }} -o exports/ci-test-${{ matrix.chain }}
+        env:
+          NODE_OPTIONS: "--max-old-space-size=8192"