alerts: Teams webhook fan-out (contract 0.14.0) + printedparts detail revision column

send_webhook(title,text) posts alerts to an optional webhook (Teams Incoming
Webhook / Workflow, or generic JSON) via alert_webhook_url + alert_webhook_format
settings; send_alert fans out to it alongside email; exposed on shopdb.api
(0.13.0->0.14.0, PLUGIN-HOOKS synced); low-stock posts on its custom-recipient
path too. Also: recent-transactions table shows the consumed print-file revision.

plugins/printedparts/api/routes.py

@@ -330,26 +330,33 @@ def _send_lowstock_alert(item):
     Recipients: Setting printedparts_alert_email (comma-separated), falling
     back to the site's alert_recipients. Never fails the transaction - the
     ledger write already committed."""
-    from shopdb.api import send_email, send_alert, Setting
+    from shopdb.api import send_email, send_alert, send_webhook, Setting
     code = item.gagelabtag or item.itemcode
     subject = (f'Low stock: {item.itemname} ({code}) - '
                f'{item.quantityonhand} left')
     # Absolute link to the item page when the site base URL is configured
     # (e.g. https://<host>/ops). Emails have no request context to derive it.
     base = (Setting.get('site_base_url') or '').rstrip('/')
-    link_html = (f'<p><a href="{base}/printedparts/{item.printeditemid}">'
-                 f'View {code}</a></p>') if base else ''
+    item_url = f'{base}/printedparts/{item.printeditemid}' if base else ''
+    link_html = f'<p><a href="{item_url}">View {code}</a></p>' if item_url else ''
     html = (f'<p><strong>{item.itemname}</strong> ({code}) is down '
             f'to <strong>{item.quantityonhand}</strong> '
             f'(threshold {item.lowstockthreshold}).</p>'
             f'<p>Bin: {item.binlocation or "-"}</p>'
             f'{link_html}'
             f'<p>Time to print more.</p>')
+    webhook_text = (f'**{item.itemname}** ({code}) is down to '
+                    f'{item.quantityonhand} (threshold {item.lowstockthreshold}). '
+                    f'Bin: {item.binlocation or "-"}.'
+                    + (f' [View]({item_url})' if item_url else ''))
     try:
         recipients = _alert_recipients()
         if recipients:
+            # send_email does not fan to the webhook, so post it explicitly.
+            send_webhook(subject, webhook_text)
             send_email(recipients, subject, html)
         else:
+            # send_alert already fans out to email + webhook.
             send_alert(subject, html)
     except Exception:
         import logging