T9: custom modal/dialog system update

Home.md

@@ -12,6 +12,17 @@ Mobile-first web app for tracking physical assets via barcode scanning, OCR stic
 - Username: `admin`
 - Password: `Brett85!@`
 
+### T9 Modal/Dialog System — May 2026
+- **Custom modal system** replaced all native browser `prompt()`, `alert()`, `confirm()` calls
+- Supports 4 modal types: **confirm** (yes/no), **alert** (OK only), **prompt** (text input), **form** (multi-field)
+- **CSS animations:** fade overlay + scale-in modal card
+- **Keyboard accessible:** ESC closes, Tab/Shift+Tab focus trap, Enter submits prompts
+- **Click-outside** overlay dismisses modal
+- **Accessibility:** `role="dialog"`, `aria-modal="true"`, `aria-labelledby`
+- **Backward-compatible** with all existing `showModal()` calls
+- Replaced 3 native `prompt()` calls: geofence naming (2x), database reset confirmation (1x)
+- 7 Playwright E2E tests passing
+
 ### T5 Dashboard Fixes — May 2026
 - **Active Technicians** now queries `users WHERE role='technician'` (was counting from visit data — showed 0 when no visits yet)
 - **Interactive bar charts** — hover shows label + count tooltip; click drills down to filtered asset list (Category, Status, Make)