chore: update skipped tests plan with Cerberus verification results

Update skipped-tests-remediation.md to reflect completion of Phase 1 (Cerberus default enablement):

Verified Cerberus defaults to enabled:true when no env vars set
28 tests now passing (previously skipped due to Cerberus detection)
Total skipped reduced from 98 → 63 (36% reduction)
All real-time-logs tests (25) now executing and passing
Break-glass disable flow validated and working
Evidence includes:

Environment variable absence check (no CERBERUS_* vars)
Status endpoint verification (enabled:true by default)
Playwright test execution results (28 passed, 32 skipped)
Breakdown of remaining 7 skipped tests (toggle actions not impl)
Phase 1 and Phase 3 now complete. Remaining work: user management UI (22 tests), TestDataManager auth fix (8 tests), security toggles (8 tests).

.vscode/tasks.json

@@ -102,6 +102,42 @@
                 "close": false
             }
         },
+        {
+            "label": "Test: E2E Playwright (Chromium) - Cerberus: Real-Time Logs",
+            "type": "shell",
+            "command": "PLAYWRIGHT_HTML_OPEN=never npx playwright test --project=chromium tests/monitoring/real-time-logs.spec.ts",
+            "group": "test",
+            "problemMatcher": [],
+            "presentation": {
+                "reveal": "always",
+                "panel": "dedicated",
+                "close": false
+            }
+        },
+        {
+            "label": "Test: E2E Playwright (Chromium) - Cerberus: Security Dashboard",
+            "type": "shell",
+            "command": "PLAYWRIGHT_HTML_OPEN=never npx playwright test --project=chromium tests/security/security-dashboard.spec.ts",
+            "group": "test",
+            "problemMatcher": [],
+            "presentation": {
+                "reveal": "always",
+                "panel": "dedicated",
+                "close": false
+            }
+        },
+        {
+            "label": "Test: E2E Playwright (Chromium) - Cerberus: Rate Limiting",
+            "type": "shell",
+            "command": "PLAYWRIGHT_HTML_OPEN=never npx playwright test --project=chromium tests/security/rate-limiting.spec.ts",
+            "group": "test",
+            "problemMatcher": [],
+            "presentation": {
+                "reveal": "always",
+                "panel": "dedicated",
+                "close": false
+            }
+        },
         {
             "label": "Test: E2E Playwright (All Browsers)",
             "type": "shell",