jumpcloud: add description to the Starting point configuration option (#18774)

This PR also updates to `show_user: true`, so the field and its guidance are visible
without expanding advanced settings.

Author: brijesh-elastic

packages/jumpcloud/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.19.0"
+  changes:
+    - description: Add description to the Starting point configuration option.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/18774
 - version: "1.18.0"
   changes:
     - description: Update services description with all supported Directory Insights service values.

packages/jumpcloud/data_stream/events/manifest.yml

@@ -30,7 +30,12 @@ streams:
       - name: starting_point
         type: text
         title: Starting point for event collection relative to now
-        show_user: false
+        description: >-
+          How far back to collect events on the first run. Uses Go duration
+          syntax: a negative number followed by a unit (h, m, or s). The "d"
+          (days) unit is not supported — use hours instead. Examples: -30m
+          (30 minutes), -4h (4 hours), -168h (~7 days), -720h (~30 days).
+        show_user: true
         required: true
         default: -360h
       - name: source_lag_time

packages/jumpcloud/img/sample-add-integration.png

@@ -1,7 +1,7 @@
 format_version: "3.0.2"
 name: jumpcloud
 title: "JumpCloud"
-version: "1.18.0"
+version: "1.19.0"
 description: "Collect logs from JumpCloud Directory as a Service"
 type: integration
 categories: