feat(workflows): add revision history, trash, UUID naming, and backup

- Store up to 50 revisions per workflow in SQLite with normalized SHA dedup
- Soft-delete workflows to trash (7-day retention) with restore and permanent purge
- Assign UUID filenames for new and duplicated workflows; show name + file in UI
- Warn on invalid YAML, unknown scripts, and plaintext secrets with save-anyway option
- Add workflow backup zip (workflows + plugins) and merge/replace restore
- Trash page, history panel on editor, and smoke test

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

packages/server/package.json

@@ -12,7 +12,8 @@
     "start:worker": "node worker.js",
     "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: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"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.1111.0",