fix(cli): bump Node heap to 8GB for data-heavy :prod CLIs

cold-import 全量(13 万患者,appointment 50 万行,EMR 多 JSON)默认 2GB heap OOM。
4 个数据密集 CLI 加 --max-old-space-size:
  cold-import:prod         8GB
  recompute-persona:prod   8GB
  recompute-plans:prod     8GB
  sync-incremental:prod    4GB(增量,更轻)

服务器 14GB RAM,留 6GB 给 pac-service+postgres+redis 主进程。

apps/pac-service/package.json

@@ -17,13 +17,13 @@
     "prisma:studio": "prisma studio",
     "prisma:seed": "ts-node --transpile-only prisma/seed.ts",
     "cold-import": "ts-node --transpile-only src/cli/cold-import.cli.ts",
-    "cold-import:prod": "node dist/cli/cold-import.cli.js",
+    "cold-import:prod": "node --max-old-space-size=8192 dist/cli/cold-import.cli.js",
     "sync-incremental": "ts-node --transpile-only src/cli/sync-incremental.cli.ts",
-    "sync-incremental:prod": "node dist/cli/sync-incremental.cli.js",
+    "sync-incremental:prod": "node --max-old-space-size=4096 dist/cli/sync-incremental.cli.js",
     "recompute-persona": "ts-node --transpile-only src/cli/recompute-persona.cli.ts",
-    "recompute-persona:prod": "node dist/cli/recompute-persona.cli.js",
+    "recompute-persona:prod": "node --max-old-space-size=8192 dist/cli/recompute-persona.cli.js",
     "recompute-plans": "ts-node --transpile-only src/cli/recompute-plans.cli.ts",
-    "recompute-plans:prod": "node dist/cli/recompute-plans.cli.js",
+    "recompute-plans:prod": "node --max-old-space-size=8192 dist/cli/recompute-plans.cli.js",
     "timeline": "ts-node --transpile-only src/cli/timeline.cli.ts",
     "timeline:prod": "node dist/cli/timeline.cli.js",
     "verify-scenarios": "ts-node --transpile-only src/cli/verify-scenarios.ts",