fix(jira,tests): push system gaps to Jira, show detect suggested procedure in catalog

flag_blue_review_gap saved system_gaps on the test but the Jira
in_review comment never mentioned it, so a flagged capability gap was
silently invisible in Jira. Now included in the comment and tagged
with a system-gap label for filtering.

Also surfaces TestTemplate.detect_suggested_procedure as a read-only
reference in the Test Catalog's create-from-template modal — it was
only ever shown in the admin template editor, not here, so an approved
suggestion appeared to vanish when viewed from the catalog.

backend/app/services/jira_service.py

@@ -508,6 +508,8 @@ def _build_state_comment(
             "",
             f"*Detection Result:* {test.detection_result or 'N/A'}",
         ]
+        if test.system_gaps:
+            lines += ["", "h4. ⚠️ System Gap Flagged", test.system_gaps]
         if test.blue_summary:
             lines += ["", "h4. Blue Team Summary", test.blue_summary]
         if test.remediation_steps:
@@ -933,6 +935,8 @@ def push_test_event(
                     "Could not unassign %s for state %s: %s",
                     link.jira_issue_key, new_state, exc_a,
                 )
+            if test.system_gaps:
+                _add_jira_label(jira, link.jira_issue_key, "system-gap")
 
         link.last_synced_at = datetime.utcnow()
         db.flush()