fix(campaigns,tests): admin cannot create campaigns, manager can delete unstarted tests, intensify red/blue team colors

- Campaign creation and generate-from-threat-actor now use the strict
  role check — admin no longer gets a free pass into campaign content,
  same principle already applied to test-template creation.
- New manager-only DELETE /tests/{id}: removes a standalone test still
  in draft (not started, not linked to any campaign).
- Replaced the orange/indigo stand-ins used across team badges, tabs,
  action buttons, and timers with true red/blue so Red Team and Blue
  Team read unambiguously at a glance.

backend/tests/test_admin_excluded_from_test_workflow.py

@@ -39,6 +39,8 @@ DUMMY_ID = str(uuid.uuid4())
         ("post", "/api/v1/tests", {"technique_id": DUMMY_ID, "name": "x"}),
         ("post", "/api/v1/tests/from-template", {"template_id": DUMMY_ID, "technique_id": DUMMY_ID}),
         ("post", "/api/v1/tests/import-rt", {"name": "x", "techniques": []}),
+        ("post", "/api/v1/campaigns", {"name": "x"}),
+        ("post", f"/api/v1/campaigns/from-threat-actor/{DUMMY_ID}", None),
     ],
 )
 def test_admin_forbidden(client, auth_headers, method, path, payload):

backend/tests/test_manager_delete_test.py

@@ -0,0 +1,73 @@
+"""A manager (and only a manager) can delete a standalone test from the
+queue, but only while it hasn't started yet (draft) and isn't linked to
+any campaign — a test already in progress, or one that's part of a
+campaign's plan, must go through the normal workflow instead.
+"""
+
+import pytest
+
+
+@pytest.fixture
+def technique(api, auth_headers):
+    resp = api(
+        "post", "/api/v1/techniques", auth_headers,
+        json={"mitre_id": "T1059.600", "name": "Command Line Delete Test"},
+    )
+    assert resp.status_code == 201, resp.text
+    return resp.json()["id"]
+
+
+@pytest.fixture
+def draft_test(api, red_lead_headers, technique):
+    resp = api(
+        "post", "/api/v1/tests", red_lead_headers,
+        json={"technique_id": technique, "name": "Standalone draft test"},
+    )
+    assert resp.status_code == 201, resp.text
+    return resp.json()["id"]
+
+
+def test_manager_can_delete_draft_standalone_test(api, manager_headers, draft_test):
+    resp = api("delete", f"/api/v1/tests/{draft_test}", manager_headers)
+    assert resp.status_code == 204, resp.text
+
+    reloaded = api("get", f"/api/v1/tests/{draft_test}", manager_headers)
+    assert reloaded.status_code == 404
+
+
+def test_red_lead_cannot_delete_test(api, red_lead_headers, draft_test):
+    resp = api("delete", f"/api/v1/tests/{draft_test}", red_lead_headers)
+    assert resp.status_code == 403
+
+
+def test_admin_cannot_delete_test(api, auth_headers, draft_test):
+    resp = api("delete", f"/api/v1/tests/{draft_test}", auth_headers)
+    assert resp.status_code == 403
+
+
+def test_manager_cannot_delete_started_test(api, manager_headers, red_tech_headers, draft_test):
+    started = api("post", f"/api/v1/tests/{draft_test}/start-execution", red_tech_headers)
+    assert started.status_code == 200, started.text
+
+    resp = api("delete", f"/api/v1/tests/{draft_test}", manager_headers)
+    assert resp.status_code == 400
+
+
+def test_manager_cannot_delete_test_linked_to_a_campaign(
+    api, db, manager_headers, red_lead_headers, draft_test,
+):
+    campaign = api(
+        "post", "/api/v1/campaigns", red_lead_headers,
+        json={"name": "Holds the test"},
+    )
+    assert campaign.status_code == 201, campaign.text
+    campaign_id = campaign.json()["id"]
+
+    add = api(
+        "post", f"/api/v1/campaigns/{campaign_id}/tests", red_lead_headers,
+        json={"test_id": draft_test},
+    )
+    assert add.status_code in (200, 201), add.text
+
+    resp = api("delete", f"/api/v1/tests/{draft_test}", manager_headers)
+    assert resp.status_code == 400