fix: include dev dependencies in Render build

[haosenwang1018]

Summary

• update the Render build command to install dev dependencies before running the TypeScript build
• fix deploys where NODE_ENV=production causes npm install to skip typescript and the @types/* packages needed by tsc

Reproduction

With the current render.yaml settings:

• rootDir: packages/openmemory-js
• NODE_ENV=production
• buildCommand: npm install && npm run build

A production install omits dev dependencies, so the build fails locally with:

• sh: 1: tsc: not found

That matches the reported Render deployment failure pattern.

Testing

• cd packages/openmemory-js && NODE_ENV=production npm install --ignore-scripts --no-audit --no-fund && npm run build (fails before this change because dev dependencies are skipped)
• cd packages/openmemory-js && npm install --include=dev --ignore-scripts --no-audit --no-fund && npm run build (passes)

Closes #142

[nullure]

LGTM