feat(workflows): migrate legacy workflows and enhance example handling

- Migrated legacy workflow files from `packages/server/workflows/` to `packages/server/data/workflows/` when the new store is empty.
- Introduced new API endpoints to list and retrieve example workflows.
- Added a dialog component for selecting example workflows when creating new workflows.
- Updated workflow paths and configurations to reflect the new structure.
- Enhanced the README and AGENTS.md documentation to clarify workflow management and usage.

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

examples/workflows/comic-monkeyuser-to-ntfy.yaml

@@ -0,0 +1,27 @@
+name: Comic - monkeyuser to ntfy
+description: |
+  Scrape the latest MonkeyUser comic and send it to ntfy (requires $VAR_ntfy_channel).
+scripts:
+  - script: fetch-html.js
+    config:
+      url: https://www.monkeyuser.com/
+      outputVar: comic
+      selector: .comic img
+      jsonata: |
+        {"url": "https://www.monkeyuser.com" & [attributes.src][0], "title": [attributes.title][0]}
+  - script: jsonata.js
+    config:
+      expression: |
+        {
+          "title": data.comic.title,
+          "message": data.comic.title,
+          "attach": data.comic.url
+        }
+  - script: fetch-binary.js
+  - script: ntfy.js
+    config:
+      url: $VAR_ntfy_channel
+triggers:
+  - type: HTTP
+    method: POST
+    path: /comic-monkeyuser