v2.5.2 — PWA, new branding, bug fixes

Progressive Web App:
- Service worker with Workbox caching (map tiles, API, uploads, CDN)
- Web app manifest with standalone display mode
- Custom app icon with PNG generation from SVG
- Apple meta tags, dynamic theme-color for dark/light mode
- iOS safe area handling

New Branding:
- Custom NOMAD logo (icon + text variants for light/dark mode)
- Logo used in navbar, login page, demo banner, admin, PDF export
- MuseoModerno font for login tagline
- Plane takeoff animation on login
- Liquid glass hover effect on dashboard spotlight & widgets
- Brand images protected from save/copy/drag
- "made with NOMAD" footer on PDF exports

Bug Fixes:
- Fix mobile note reorder (missing tripId prop)
- Fix Atlas city counting (strip postal codes, normalize case)
- Fix Atlas country detection (add Japanese/Korean/Thai names)
- Fix PDF note positioning (use order_index instead of sort_order)
- Fix PDF note icons (render actual icon instead of hardcoded notepad)
- Fix file source badge overflow on mobile (text truncation)
- Fix navbar dropdown z-index overlap with mobile plan/places buttons
- Fix dashboard trip card hover contrast in dark mode
- Fix day header hover color matching place background in dark mode
- Shorten settings button labels on mobile

UI Improvements:
- Mobile navbar shows icon only, desktop shows full logo
- NOMAD version badge in profile dropdown
- Top padding before first item in day planner
- Improved drag & drop stability (larger drop zones, less flickering)

client/index.html

@@ -6,14 +6,19 @@
     <title>NOMAD</title>
 
     <!-- PWA / iOS -->
-    <meta name="theme-color" content="#111827" />
+    <meta name="theme-color" content="#09090b" />
     <meta name="apple-mobile-web-app-capable" content="yes" />
     <meta name="apple-mobile-web-app-status-bar-style" content="default" />
     <meta name="apple-mobile-web-app-title" content="NOMAD" />
     <link rel="apple-touch-icon" href="/icons/apple-touch-icon-180x180.png" />
 
     <!-- Favicon -->
-    <link rel="icon" type="image/svg+xml" href="/icons/icon.svg" />
+    <link rel="icon" type="image/svg+xml" href="/icons/icon-dark.svg" />
+
+    <!-- Fonts -->
+    <link rel="preconnect" href="https://fonts.googleapis.com" />
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+    <link href="https://fonts.googleapis.com/css2?family=MuseoModerno:wght@400;700;800&display=swap" rel="stylesheet" />
 
     <!-- Leaflet -->
     <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />