feat(workflows): add MinIO S3 test workflow

Exercise fetch-binary plus s3 write against a local HTTP MinIO endpoint.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/server/workflows/default/registers.yaml

@@ -10,3 +10,4 @@ scripts:
   - test-send-gmail.yaml
   - track.yaml
   - rss-devto-to-ntfy.yaml
+  - test-minio.yaml

packages/server/workflows/default/test-minio.yaml

@@ -0,0 +1,20 @@
+name: Test MinIO
+scripts:
+  - script: fetch-binary.js
+    config:
+      outputVar: file
+      url: https://nsrb:error403@dav.0dev.web.id/ntfy/IyM9784UdG4S
+      filename: test.png
+  - script: s3.js
+    config:
+      action: write
+      endpoint: http://localhost:9000
+      bucket: default
+      forcePathStyle: true
+      accessKeyIdSecret: minio_user
+      secretAccessKeySecret: minio_pass
+      key: file.png
+triggers:
+  - type: HTTP
+    method: POST
+    path: /new