fix: 4 improvements — campaign test deletion, review queue triggers, technique link, Jira read-only

1. Campaign test deletion: removing a test from a campaign now also
   deletes the underlying Test record and recalculates technique status.

2. Review Queue triggers: review_required=True is now also set when
   - Sigma/Elastic detection rules are imported for a technique
   - A test is validated (coverage status changes)

3. Test detail — Technique link: 'Technique' entry added at the top of
   the Details sidebar showing MITRE ID + name as a clickable link to
   /techniques/{mitre_id}.

4. Jira panel — read-only on test page: added readOnly + label props to
   JiraLinkPanel. TestDetailPage now passes readOnly=true and the test
   name as label, hiding Link Issue / Sync / Unlink controls (automatic
   Jira creation only — no manual management).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/services/campaign_crud_service.py

@@ -320,9 +320,28 @@ def remove_test_from_campaign(db: Session, campaign_id: str, campaign_test_id: s
     for dep in dependents:
         dep.depends_on = None
 
+    # Keep a reference to the underlying test before deleting the join record
+    test_id = ct.test_id
+    technique_id = None
+    test_obj = db.query(Test).filter(Test.id == test_id).first()
+    if test_obj:
+        technique_id = test_obj.technique_id
+
     db.delete(ct)
     db.flush()
 
+    # Also delete the actual test record (it was created for this campaign)
+    if test_obj:
+        db.delete(test_obj)
+        db.flush()
+
+    # Recalculate technique status_global so coverage metrics stay consistent
+    if technique_id:
+        technique = db.query(Technique).filter(Technique.id == technique_id).first()
+        if technique:
+            recalculate_technique_status(db, technique)
+            db.flush()
+
 
 def activate_campaign(db: Session, campaign_id: str) -> Campaign:
     """Activate a campaign, moving it from draft to active.