feat: Kisani UI overhaul — brand identity, gallery, visual polish

- Rename app to Kisani (CFBundleDisplayName, xcodeproj → Kisani.xcodeproj)
- BackupView: kisani. wordmark + SwiftUI-drawn server logo mark (no asset,
  adaptive ink/bg), 206pt progress ring with active-state glow, 4-page
  swipeable ring (progress/pending/failed/uploaded), 4-metric stats strip,
  friendly NAS card (Home Server label), hamburger → AppMenuView sheet
- GalleryView: new NAS + local photo grid with source picker chip, 3-col
  lazy grid, ThumbnailCache, sync-status dots (green = backed up)
- MainTabView: Browse tab → Gallery tab; tab bar uses ultraThinMaterial
  blur background (systemGray3 icons, 9.5pt labels)
- All app icon sizes regenerated from 1024pt source via sips
- LANMonitor: nasReachable Bool?, checkNASReachability(host:port:) TCP ping
- project.yml: photo library usage description updated to Kisani branding

Co-Authored-By: Kutesir <kutesir@provoc.ug>
Co-Authored-By: Sentry <sentry@provoc.ug>

Features/Sync/SyncView.swift

@@ -174,11 +174,13 @@ struct SyncView: View {
             Spacer()
             HStack(spacing: 5) {
                 Circle()
-                    .fill(lanMonitor.nasReachable == true ? AppTheme.positive : AppTheme.inkQuaternary)
+                    .fill(reachableColor)
                     .frame(width: 6, height: 6)
-                Text(lanMonitor.nasReachable == true ? "Available" : "Offline")
+                    .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
+                Text(reachableLabel)
                     .font(AppTheme.micro())
-                    .foregroundStyle(lanMonitor.nasReachable == true ? AppTheme.positive : AppTheme.inkTertiary)
+                    .foregroundStyle(reachableColor)
+                    .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
             }
         }
     }
@@ -274,6 +276,22 @@ struct SyncView: View {
         }
     }
 
+    private var reachableColor: Color {
+        switch lanMonitor.nasReachable {
+        case true:  return AppTheme.positive
+        case false: return AppTheme.destructive.opacity(0.7)
+        case nil:   return AppTheme.inkQuaternary
+        }
+    }
+
+    private var reachableLabel: String {
+        switch lanMonitor.nasReachable {
+        case true:  return "Online"
+        case false: return "Offline"
+        case nil:   return "Checking…"
+        }
+    }
+
     // MARK: — Toolbar chip
 
     private var nasStatusChip: some View {
@@ -281,14 +299,11 @@ struct SyncView: View {
             Circle()
                 .fill(lanMonitor.nasReachable == true ? AppTheme.positive : AppTheme.inkQuaternary)
                 .frame(width: 5, height: 5)
-            Text(connection?.displayName ?? "NAS")
+                .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
+            Text(connection?.host ?? "NAS")
                 .font(.system(size: 12, weight: .medium))
                 .foregroundStyle(AppTheme.inkSecondary)
         }
-        .padding(.horizontal, 10)
-        .padding(.vertical, 5)
-        .background(AppTheme.surfaceSunken)
-        .clipShape(Capsule(style: .continuous))
     }
 
     // MARK: — Data