chore: update progress for US-183

Author: NathanFlurry

progress.txt

@@ -2301,3 +2301,13 @@ PRD: ralph/kernel-hardening (46 stories)
   - Must rebuild core (`pnpm turbo run build --filter=@secure-exec/core`) after changing isolate-runtime source files
   - Generated isolate-runtime.ts must be committed alongside source changes
 ---
+
+## 2026-03-18 - US-183
+- What was implemented: Added lodash-es project-matrix fixture to verify large ESM module resolution at scale in the sandbox
+- Files changed:
+  - packages/secure-exec/tests/projects/lodash-es-pass/ — new fixture (fixture.json, package.json, src/index.js, pnpm-lock.yaml)
+  - docs/nodejs-compatibility.mdx — added lodash-es to Tested Packages table
+- **Learnings for future iterations:**
+  - lodash-es individual module imports (e.g., `lodash-es/map.js`) work fine with ESM — no need to use barrel import
+  - Fixture passed on first attempt with no sandbox compatibility issues
+---

scripts/ralph/prd.json

@@ -3156,7 +3156,7 @@
         "Tests pass (project-matrix)"
       ],
       "priority": 183,
-      "passes": false,
+      "passes": true,
       "notes": "lodash-es has hundreds of ESM modules. Tests ESM resolution at scale."
     },
     {