Fix CI: build stratus-sdk before mcp-aws typecheck

mcp-aws E2E tests import from stratus-sdk — TypeScript needs the
built types to resolve. Build stratus-sdk first so the workspace
link has .d.ts files available.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: tylergibbs1

.github/workflows/ci.yml

@@ -24,6 +24,9 @@ jobs:
 
       - run: bun install --frozen-lockfile
 
+      - name: Build stratus-sdk (needed for mcp-aws typecheck)
+        run: bun run --filter stratus-sdk build
+
       - name: Typecheck stratus-sdk
         run: bunx tsc -p packages/stratus-sdk/tsconfig.build.json --noEmit