feat(FN-2361): codify workspace verification bootstrap contract

- Add root verify:workspace script enforcing lint -> test -> build order
- Update CI workflow to run verify:workspace as the single workspace gate before binary packaging
- Add CLI guardrail tests for workflow sequencing and root script contract invariants
- Document deterministic workspace bootstrap expectations in contributing guide
- Clarify bundle-output test bootstrap intent for explicit artifact setup

.github/workflows/ci.yml

@@ -29,18 +29,12 @@ jobs:
       - name: Install dependencies
         run: pnpm install
 
-      - name: Lint
-        run: pnpm lint
-
-      - name: Build
-        run: pnpm build
+      - name: Verify workspace bootstrap contract (lint -> test -> build)
+        run: pnpm verify:workspace
 
       - name: Install Bun
         uses: oven-sh/setup-bun@v2
 
-      - name: Test
-        run: pnpm test
-
       - name: Build standalone binary
         run: pnpm --filter @runfusion/fusion build:exe