feat(campaigns): prefix test names with [Campaign] on add

- From template: name is pre-filled as '[Campaign] {template.name}'
  (user can edit before confirming).
- Existing test: renamed via PATCH /tests/{id} to prepend '[Campaign] '
  before being linked to the campaign, consistent with the APT-generated
  campaign flow.
  Idempotent — skips rename if the name already starts with '[Campaign]'.

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

frontend/src/components/AddTestToCampaignModal.tsx

@@ -12,10 +12,9 @@ import {
   ChevronRight,
   Filter,
 } from "lucide-react";
-import { getTests } from "../api/tests";
+import { getTests, createTestFromTemplate, updateTest } from "../api/tests";
 import { addTestToCampaign } from "../api/campaigns";
 import { getTemplates, getTemplateById } from "../api/test-templates";
-import { createTestFromTemplate } from "../api/tests";
 import type { Test, TestState, TestTemplateSummary } from "../types/models";
 
 /* ── helpers ─────────────────────────────────────────────────────── */
@@ -130,10 +129,13 @@ export default function AddTestToCampaignModal({
     enabled: !!selectedTemplateId,
   });
 
-  // Pre-fill form when full template loads
+  // Pre-fill form when full template loads — always prefix with [Campaign]
   useEffect(() => {
     if (fullTemplate) {
-      setFormName(fullTemplate.name);
+      const baseName = fullTemplate.name.startsWith("[Campaign]")
+        ? fullTemplate.name
+        : `[Campaign] ${fullTemplate.name}`;
+      setFormName(baseName);
       setFormDescription(fullTemplate.description || "");
       setFormPlatform(fullTemplate.platform || "");
       setFormProcedure(fullTemplate.attack_procedure || "");
@@ -143,14 +145,20 @@ export default function AddTestToCampaignModal({
 
   // ── mutations ─────────────────────────────────────────────────────
 
-  /** Add an existing test directly to the campaign */
+  /** Add an existing test to the campaign, renaming it with [Campaign] prefix first */
   const addExistingMutation = useMutation({
-    mutationFn: (testId: string) =>
+    mutationFn: async (test: Test) => {
-      addTestToCampaign(campaignId, { test_id: testId }),
+      // Rename the test to add [Campaign] prefix if not already present
-    onSuccess: (_data, testId) => {
+      if (!test.name.startsWith("[Campaign]")) {
-      setAddedIds((prev) => new Set(prev).add(testId));
+        await updateTest(test.id, { name: `[Campaign] ${test.name}` });
+      }
+      return addTestToCampaign(campaignId, { test_id: test.id });
+    },
+    onSuccess: (_data, test) => {
+      setAddedIds((prev) => new Set(prev).add(test.id));
       setAddedCount((n) => n + 1);
       queryClient.invalidateQueries({ queryKey: ["campaign", campaignId] });
+      queryClient.invalidateQueries({ queryKey: ["tests"] });
       onSuccess();
     },
   });
@@ -528,11 +536,11 @@ export default function AddTestToCampaignModal({
                           </div>
                         </div>
                         <button
-                          onClick={() => addExistingMutation.mutate(test.id)}
+                          onClick={() => addExistingMutation.mutate(test)}
-                          disabled={addExistingMutation.isPending && addExistingMutation.variables === test.id}
+                          disabled={addExistingMutation.isPending && addExistingMutation.variables?.id === test.id}
                           className="ml-3 flex shrink-0 items-center gap-1.5 rounded-lg border border-cyan-500/30 bg-cyan-500/10 px-3 py-1.5 text-xs font-medium text-cyan-400 hover:bg-cyan-500/20 disabled:opacity-50 transition-colors"
                         >
-                          {addExistingMutation.isPending && addExistingMutation.variables === test.id ? (
+                          {addExistingMutation.isPending && addExistingMutation.variables?.id === test.id ? (
                             <Loader2 className="h-3.5 w-3.5 animate-spin" />
                           ) : (
                             <Plus className="h-3.5 w-3.5" />