Inspect sdk dist in release workflow

Author: Nam's Office Computer

.changeset/ci-sdk-dist-inspect.md

@@ -0,0 +1,5 @@
+---
+'@hyperlane-xyz/sdk': patch
+---
+
+The SDK build was inspected on GitHub Actions to verify that dist output matches source.

.github/workflows/release.yml

@@ -268,6 +268,25 @@ jobs:
       - name: Build packages
         run: pnpm run build
 
+      - name: Inspect SDK dist after build
+        run: |
+          echo "Source cross-collateral predicate:"
+          rg -n "isCrossCollateralToken|SealevelHypCrossCollateral" typescript/sdk/src/token/Token.ts
+          echo ""
+          echo "Dist token entry:"
+          sed -n '1,12p' typescript/sdk/dist/token/Token.js || true
+          echo ""
+          echo "Dist TokenMetadata predicate:"
+          sed -n '70,90p' typescript/sdk/dist/token/TokenMetadata.js || true
+          echo ""
+          if [ -f typescript/sdk/dist/token/TokenMetadata.js ] && \
+             rg -q "SealevelHypCrossCollateral" typescript/sdk/src/token/Token.ts && \
+             ! rg -q "SealevelHypCrossCollateral" typescript/sdk/dist/token/TokenMetadata.js; then
+            echo "::error::SDK dist is stale on CI: source includes SealevelHypCrossCollateral but dist/token/TokenMetadata.js does not"
+            exit 1
+          fi
+          echo "No sdk dist/source mismatch detected"
+
       - name: Build ZKSync artifacts
         if: inputs.include_zksync
         run: pnpm run build:zk