fix(jira): show test Jira tickets on technique page (correct entity model)

Techniques don't have their own Jira tickets — tickets exist on tests
and campaigns. The previous JiraLinkPanel entityType='technique' always
returned empty.

Backend: add entity_ids (list) filter to GET /jira/links so multiple
  test IDs can be fetched in a single request.
Frontend API: listJiraLinks() accepts entity_ids[] and serialises them
  as repeated query params (required by FastAPI List[UUID] parsing).
TechniqueDetailPage: replace JiraLinkPanel with TechniqueJiraSection —
  a dedicated read-only component that:
  - Takes technique.tests (already loaded)
  - Batch-fetches all test Jira links in one request
  - Shows test name + ticket key + status + priority + open-in-Jira link
  - Hides itself when no tickets exist (avoids empty panel)

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

frontend/src/pages/TechniqueDetailPage.tsx

@@ -21,9 +21,10 @@ import {
 } from "lucide-react";
 import { getTechniqueByMitreId, markTechniqueReviewed } from "../api/techniques";
 import { getTemplatesByTechnique } from "../api/test-templates";
+import { listJiraLinks, type JiraLink } from "../api/jira";
+import { getJiraConfig } from "../api/settings";
 import { useAuth } from "../context/AuthContext";
 import TestFromTemplateForm from "../components/TestFromTemplateForm";
-import JiraLinkPanel from "../components/JiraLinkPanel";
 import type { TechniqueStatus, TestState, TestResult } from "../types/models";
 
 const statusBadgeColors: Record<TechniqueStatus, string> = {
@@ -50,6 +51,102 @@ const testResultBadgeColors: Record<TestResult, string> = {
   partially_detected: "bg-yellow-900/50 text-yellow-400 border-yellow-500/30",
 };
 
+/* ── TechniqueJiraSection ─────────────────────────────────────────────
+   Techniques don't have their own Jira tickets — tickets live on tests.
+   This component fetches all test-linked Jira tickets for this technique
+   in a single batched request and shows them read-only.
+   ─────────────────────────────────────────────────────────────────── */
+function TechniqueJiraSection({ technique }: { technique: ReturnType<typeof Object.create> }) {
+  const tests: { id: string; name: string }[] = (technique as any).tests ?? [];
+
+  const testIds = tests.map((t) => t.id);
+
+  const { data: links = [], isLoading } = useQuery({
+    queryKey: ["jira-links-technique", testIds],
+    queryFn: () =>
+      listJiraLinks({ entity_type: "test", entity_ids: testIds }),
+    enabled: testIds.length > 0,
+    staleTime: 60_000,
+  });
+
+  const { data: jiraConfig } = useQuery({
+    queryKey: ["jira-config"],
+    queryFn: getJiraConfig,
+    staleTime: 5 * 60 * 1000,
+  });
+
+  const jiraBase = jiraConfig?.url?.replace(/\/$/, "") ?? "https://jira.atlassian.com";
+
+  const statusColors: Record<string, string> = {
+    "To Do":       "bg-gray-700 text-gray-300",
+    "In Progress": "bg-blue-900/50 text-blue-400",
+    "Done":        "bg-green-900/50 text-green-400",
+  };
+
+  // Build a map entity_id → test name
+  const testById = Object.fromEntries(tests.map((t) => [t.id, t.name]));
+
+  // Only render if there's something to show (or we're loading)
+  if (!isLoading && links.length === 0) return null;
+
+  return (
+    <div className="rounded-xl border border-gray-800 bg-gray-900 p-6">
+      <h2 className="mb-4 flex items-center gap-2 text-lg font-semibold text-white">
+        <ExternalLink className="h-5 w-5 text-blue-400" />
+        Jira Tickets
+      </h2>
+
+      {isLoading ? (
+        <div className="flex justify-center py-4">
+          <Loader2 className="h-5 w-5 animate-spin text-gray-500" />
+        </div>
+      ) : (
+        <div className="space-y-2">
+          {links.map((link: JiraLink) => (
+            <div
+              key={link.id}
+              className="flex items-center justify-between rounded-lg border border-gray-700 bg-gray-800/30 px-4 py-3"
+            >
+              <div className="flex-1 min-w-0">
+                {/* Test name */}
+                <p className="text-xs text-gray-500 truncate mb-1">
+                  {testById[link.entity_id] ?? "Test"}
+                </p>
+                {/* Jira ticket info */}
+                <div className="flex items-center gap-2 flex-wrap">
+                  <span className="font-mono text-sm font-medium text-blue-400">
+                    {link.jira_issue_key}
+                  </span>
+                  {link.jira_status && (
+                    <span className={`rounded px-1.5 py-0.5 text-xs ${statusColors[link.jira_status] ?? "bg-gray-700 text-gray-300"}`}>
+                      {link.jira_status}
+                    </span>
+                  )}
+                  {link.jira_priority && (
+                    <span className="text-xs text-gray-500">{link.jira_priority}</span>
+                  )}
+                  {link.jira_assignee && (
+                    <span className="text-xs text-gray-500">→ {link.jira_assignee}</span>
+                  )}
+                </div>
+              </div>
+              <a
+                href={`${jiraBase}/browse/${link.jira_issue_key}`}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="ml-3 shrink-0 rounded p-1.5 text-gray-500 hover:bg-gray-700 hover:text-blue-400 transition-colors"
+                title="Open in Jira"
+              >
+                <ExternalLink className="h-4 w-4" />
+              </a>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
+
 export default function TechniqueDetailPage() {
   const { mitreId } = useParams<{ mitreId: string }>();
   const navigate = useNavigate();
@@ -561,10 +658,8 @@ export default function TechniqueDetailPage() {
         </div>
       )}
 
-      {/* Jira Integration */}
-      {technique && (
-        <JiraLinkPanel entityType="technique" entityId={technique.id} readOnly label={technique.name} />
-      )}
+      {/* Jira Integration — shows tickets linked to tests of this technique */}
+      {technique && <TechniqueJiraSection technique={technique} />}
 
       {/* Template instantiation modal */}
       {templateFormId && technique && (