test(e2e): optimize global setup and fix hanging issues

docs/plans/current_spec.md

@@ -89,6 +89,7 @@ npx playwright test
 - [x] Modify playwright.config.js to comment out security projects
 - [x] Remove security-tests dependency from browser projects
 - [x] Fix Go cache path in e2e-tests.yml workflow
+- [x] Optimize global-setup.ts to prevent hanging on emergency reset
 - [ ] Commit with clear diagnostic message
 - [ ] Trigger CI run
 - [ ] Analyze results and document findings
@@ -119,3 +120,42 @@ Restore cache failed: Dependencies file is not found in /home/runner/work/Charon
 ```
 
 **Impact**: The Go module cache will now properly restore, speeding up the build process by ~30-60 seconds per run.
+
+### Global Setup Optimization (Hanging Prevention)
+
+**Issue**: Shards were hanging after the "Skipping authenticated security reset" message during global-setup.ts execution.
+
+**Root Cause**:
+1. Emergency security reset API calls had no timeout - could hang indefinitely
+2. 2-second propagation delay after each reset (called twice = 4+ seconds)
+3. Pre-auth reset was being attempted even on fresh containers where it's unnecessary
+
+**Fixes Applied**:
+1. **Added 5-second timeout** to emergency reset API calls to prevent indefinite hangs
+2. **Reduced propagation delay** from 2000ms to 500ms (fresh containers don't need long waits)
+3. **Skip pre-auth reset in CI** when using default test token (fresh containers start clean)
+
+**Before**:
+```typescript
+const response = await requestContext.post('/api/v1/emergency/security-reset', {
+  headers: { 'X-Emergency-Token': emergencyToken },
+  // No timeout - could hang forever
+});
+// ...
+await new Promise(resolve => setTimeout(resolve, 2000)); // 2s wait
+```
+
+**After**:
+```typescript
+const response = await requestContext.post('/api/v1/emergency/security-reset', {
+  headers: { 'X-Emergency-Token': emergencyToken },
+  timeout: 5000, // 5s timeout prevents hanging
+});
+// ...
+await new Promise(resolve => setTimeout(resolve, 500)); // 500ms wait
+```
+
+**Impact**:
+- ✅ Prevents shards from hanging on global-setup
+- ✅ Reduces global-setup time by ~3-4 seconds per shard
+- ✅ Skips unnecessary emergency reset on fresh CI containers