feat(profiles): add typed live step config profiles

Profiles store script + default config per owner. Workflow steps reference
them with profile:, overlay keys win, and the UI marks overrides. Profile
name is immutable after create so YAML refs stay stable.

Co-authored-by: Nasyarobby Putra <nasyarobby@gmail.com>

packages/server/package.json

@@ -13,7 +13,8 @@
     "start:control": "node control.js",
     "migrate": "node -e \"import('./db.js').then((m) => m.migrate().then(() => process.exit(0)))\"",
     "test:plugins": "JFLOW_PLUGINS_DIR=./data/plugins-smoke-test JFLOW_DB_PATH=./data/plugins-smoke.db node test/plugins-smoke.js",
-    "test:workflow-history": "node test/workflow-history-smoke.js"
+    "test:workflow-history": "node test/workflow-history-smoke.js",
+    "test:profiles": "node test/profiles-smoke.js"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.1111.0",