docs: update Phase 6 testing progress - auth working, 2 issues found

- Authentication fully functional (admin/admin login working)
- Export endpoint mismatch identified (frontend vs backend paths)
- Missing search button/Ctrl+K on inventory page
- Ready for Phase 6 issue fixes

.planning/6-TESTING-PROGRESS.md

@@ -25,10 +25,45 @@
 
 ---
 
-## ⏳ NEXT: Manual UI Testing (Phase 1, 2, 5)
+## ✅ COMPLETED: Authentication & Backend Login
+
+**Auth Status:** ✅ WORKING  
+**Credentials:** admin / admin  
+**Session:** 2026-04-23
+
+- ✅ Backend password hashing correct (pbkdf2_sha256)
+- ✅ Login endpoint `/users/login` returns valid JWT token
+- ✅ Frontend auth interception working
+- ✅ Access from external IP (192.168.84.131) resolved
+- ✅ HTTPS (self-signed) working with proper cert handling
+
+---
+
+## 🚨 ISSUES FOUND (Priority: HIGH)
+
+### Issue 1: Export Endpoints 404
+**Status:** NOT WORKING  
+**Location:** Admin → Export (all types: JSON, CSV, Excel, etc.)  
+**Root Cause:** Endpoint mismatch
+- Frontend calls: `/admin/db/export` (GET)
+- Backend has: `/admin/inventory-snapshot`, `/audit-trail` (POST)
+- **Fix Required:** Implement `/admin/db/export` or update frontend calls
+
+### Issue 2: Missing Search Button
+**Status:** NOT VISIBLE  
+**Location:** Main inventory page  
+**Expected:** Search button or Ctrl+K shortcut to search items  
+**Current:** No visible search UI for manual inventory search  
+- SearchModal component exists but not rendered
+- Ctrl+K listener not implemented
+- **Fix Required:** Wire search UI to inventory page
+
+---
+
+## ⏳ NEXT: Fix Export & Search (Phase 6 Completion)
 
 **Servers Running:** ✅ All services active  
-**Time Estimate:** ~20 minutes
+**Time Estimate:** ~30 minutes for both fixes
 
 ### Phase 1: Backend Functionality (CRITICAL)