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-# Manual Test Plan: E2E Feature Flags Timeout Fix
-
-**Created:** 2026-02-02
-**Priority:** P1 - High
-**Type:** Manual Testing
-**Component:** E2E Tests, Feature Flags API
-**Related PR:** #583
-
----
-
-## Objective
-
-Manually verify the E2E test timeout fix implementation works correctly in a real CI environment after resolving the Playwright infrastructure issue.
-
-## Prerequisites
-
-- [ ] Playwright deduplication issue resolved: `rm -rf node_modules && npm install && npm dedupe`
-- [ ] E2E container rebuilt: `.github/skills/scripts/skill-runner.sh docker-rebuild-e2e`
-- [ ] Container health check passing: `docker ps` shows `charon-e2e` as healthy
-
-## Test Scenarios
-
-### 1. Feature Flag Toggle Tests (Chromium)
-
-**File:** `tests/settings/system-settings.spec.ts`
-
-**Execute:**
-```bash
-npx playwright test tests/settings/system-settings.spec.ts --project=chromium --workers=1 --retries=0
-```
-
-**Expected Results:**
-- [ ] All 7 tests pass (4 refactored + 3 new)
-- [ ] Zero timeout errors
-- [ ] Test execution time: ≤5s per test
-- [ ] Console shows retry attempts (if transient failures occur)
-
-**Tests to Validate:**
-1. [ ] `should toggle Cerberus security feature`
-2. [ ] `should toggle CrowdSec console enrollment`
-3. [ ] `should toggle uptime monitoring`
-4. [ ] `should persist feature toggle changes`
-5. [ ] `should handle concurrent toggle operations`
-6. [ ] `should retry on 500 Internal Server Error`
-7. [ ] `should fail gracefully after max retries exceeded`
-
-### 2. Cross-Browser Validation
-
-**Execute:**
-```bash
-npx playwright test tests/settings/system-settings.spec.ts --project=chromium --project=firefox --project=webkit
-```
-
-**Expected Results:**
-- [ ] All browsers pass: Chromium, Firefox, WebKit
-- [ ] No browser-specific timeout issues
-- [ ] Consistent behavior across browsers
-
-### 3. Performance Metrics Extraction
-
-**Execute:**
-```bash
-docker logs charon-e2e 2>&1 | grep "\[METRICS\]"
-```
-
-**Expected Results:**
-- [ ] Metrics logged for GET operations: `[METRICS] GET /feature-flags: {latency}ms`
-- [ ] Metrics logged for PUT operations: `[METRICS] PUT /feature-flags: {latency}ms`
-- [ ] Latency values: <200ms P99 (CI environment)
-
-### 4. Reliability Test (10 Consecutive Runs)
-
-**Execute:**
-```bash
-for i in {1..10}; do
-  echo "Run $i of 10"
-  npx playwright test tests/settings/system-settings.spec.ts --project=chromium --workers=1 --retries=0
-  if [ $? -ne 0 ]; then
-    echo "FAILED on run $i"
-    break
-  fi
-done
-```
-
-**Expected Results:**
-- [ ] 10/10 runs pass (100% pass rate)
-- [ ] Zero timeout errors across all runs
-- [ ] Retry attempts: <5% of operations
-
-### 5. UI Verification
-
-**Manual Steps:**
-1. [ ] Navigate to `/settings/system` in browser
-2. [ ] Toggle Cerberus security feature switch
-3. [ ] Verify toggle animation completes
-4. [ ] Verify "Saved" notification appears
-5. [ ] Refresh page
-6. [ ] Verify toggle state persists
-
-**Expected Results:**
-- [ ] UI responsive (<1s toggle feedback)
-- [ ] State changes reflect immediately
-- [ ] No console errors
-
-## Bug Discovery Focus
-
-**Look for potential issues in:**
-
-### Backend Performance
-- [ ] Feature flags endpoint latency spikes (>500ms)
-- [ ] Database lock timeouts
-- [ ] Transaction rollback failures
-- [ ] Memory leaks after repeated toggles
-
-### Test Resilience
-- [ ] Retry logic not triggering on transient failures
-- [ ] Polling timeouts on slow CI runners
-- [ ] Race conditions in concurrent toggle test
-- [ ] Hard-coded wait remnants causing flakiness
-
-### Edge Cases
-- [ ] Concurrent toggles causing data corruption
-- [ ] Network failures not handled gracefully
-- [ ] Max retries not throwing expected error
-- [ ] Initial state mismatch in `beforeEach`
-
-## Success Criteria
-
-- [ ] All 35 checks above pass without issues
-- [ ] Zero timeout errors in 10 consecutive runs
-- [ ] Performance metrics confirm <200ms P99 latency
-- [ ] Cross-browser compatibility verified
-- [ ] No new bugs discovered during manual testing
-
-## Failure Handling
-
-**If any test fails:**
-
-1. **Capture Evidence:**
-   - Screenshot of failure
-   - Full test output (no truncation)
-   - `docker logs charon-e2e` output
-   - Network/console logs from browser DevTools
-
-2. **Analyze Root Cause:**
-   - Is it a code defect or infrastructure issue?
-   - Is it reproducible locally?
-   - Does it happen in all browsers?
-
-3. **Take Action:**
-   - **Code Defect:** Reopen issue, describe failure, assign to developer
-   - **Infrastructure:** Document in known issues, create follow-up ticket
-   - **Flaky Test:** Investigate retry logic, increase timeouts if justified
-
-## Notes
-
-- Run tests during low CI load times for accurate performance measurement
-- Use `--headed` flag for UI verification: `npx playwright test --headed`
-- Check Playwright trace if tests fail: `npx playwright show-report`
-
----
-
-**Assigned To:** QA Team
-**Estimated Time:** 2-3 hours
-**Due Date:** Within 24 hours of Playwright infrastructure fix