fix(spec): raise DTS build heap 4096→12288 (fix flaky ERR_WORKER_OUT_OF_MEMORY) (#1619)

The spec build's separate DTS pass hard-codes NODE_OPTIONS=--max-old-space-size=4096,
which OVERRIDES the Docker/CI outer 12288 — so the type-declaration build runs in a
4GB ceiling and intermittently OOMs (ERR_WORKER_OUT_OF_MEMORY), failing the objectos
image build. The schema/type surface has grown past 4GB for the DTS pass. Match the
outer build budget (12288); --max-old-space-size is a ceiling, not a reservation, so
it is safe on smaller machines too.

Co-authored-by: Jack Zhuang <277994282+os-zhuang@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: 3 people

packages/spec/package.json

@@ -178,7 +178,7 @@
     "src/**/*.zod.ts"
   ],
   "scripts": {
-    "build": "pnpm gen:schema && pnpm gen:openapi && tsup && if [ -z \"$OS_SKIP_DTS\" ]; then NODE_OPTIONS=\"--max-old-space-size=4096\" BUILD_DTS=true tsup; fi",
+    "build": "pnpm gen:schema && pnpm gen:openapi && tsup && if [ -z \"$OS_SKIP_DTS\" ]; then NODE_OPTIONS=\"--max-old-space-size=12288\" BUILD_DTS=true tsup; fi",
     "dev": "tsc --watch",
     "clean": "rm -rf dist",
     "gen:schema": "OS_EAGER_SCHEMAS=1 tsx scripts/build-schemas.ts",