Add comprehensive test coverage for intent validation

.github/workflows/test.yml

@@ -0,0 +1,46 @@
+name: Test Intent Decoder
+
+on:
+  push:
+    branches: [ main, test-decoding ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Setup Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+        cache-dependency-path: tests/package-lock.json
+
+    - name: Install dependencies
+      working-directory: ./tests
+      run: npm ci
+
+    - name: Run intent decoder tests
+      working-directory: ./tests
+      env:
+        CURVEGRID_JWT: ${{ secrets.CURVEGRID_JWT }}
+        ETHERSCAN_API_KEY: ${{ secrets.ETHERSCAN_API_KEY }}
+        ALCHEMY_API: ${{ secrets.ALCHEMY_API }}
+      run: npm test
+
+    - name: Upload test results
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: test-results-node-${{ matrix.node-version }}
+        path: tests/test-results/
+        retention-days: 30

.gitignore

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+# Test HTML files (not the tests/ directory)
+test*.html
+test-*.html
+
+# Local metadata
+local-metadata
+
+# Test dependencies
+tests/node_modules/
+tests/.env