pos changes

lib/core/config/sync_config.dart

@@ -35,7 +35,6 @@ class SyncConfig {
     this.password,
     this.httpBaseUrl = '',
     this.apiKey,
-    this.sessionToken,
     this.ackTimeout = const Duration(seconds: 20),
     this.batchSize = 50,
   });
@@ -53,38 +52,8 @@ class SyncConfig {
   final String? password;
 
   final String httpBaseUrl;
-
-  /// A static key shared by every terminal at a deployment, if one is set.
-  ///
-  /// Predates sign-in and says nothing about *who* is at the till, so it cannot
-  /// scope a request to an outlet. Kept for deployments that put one in front
-  /// of the endpoint.
   final String? apiKey;
 
-  /// The signed session from `POST /login`, held for the trading day.
-  ///
-  /// Distinct from [apiKey] because the two answer different questions. The key
-  /// says "this request came from our fleet"; the session says "this request
-  /// came from Selvapuram, signed in as Ragul, and may touch that outlet and no
-  /// other". Only the second can stop a till reaching another tenant's books,
-  /// which is why it takes precedence when both are present.
-  final String? sessionToken;
-
-  /// What goes in the Authorization header.
-  ///
-  /// One accessor rather than the same `??` repeated at each call site, because
-  /// the request that forgot it would be the one silently sending no
-  /// credentials at all.
-  String? get bearerToken {
-    final session = sessionToken?.trim();
-    if (session != null && session.isNotEmpty) return session;
-
-    final key = apiKey?.trim();
-    if (key != null && key.isNotEmpty) return key;
-
-    return null;
-  }
-
   /// How long to wait for the back office to confirm a batch before treating
   /// the outcome as unknown and leaving every row pending.
   ///
@@ -179,7 +148,6 @@ class SyncConfig {
     String? password,
     String? httpBaseUrl,
     String? apiKey,
-    String? sessionToken,
     Duration? ackTimeout,
     int? batchSize,
   }) =>
@@ -194,7 +162,6 @@ class SyncConfig {
         password: password ?? this.password,
         httpBaseUrl: httpBaseUrl ?? this.httpBaseUrl,
         apiKey: apiKey ?? this.apiKey,
-        sessionToken: sessionToken ?? this.sessionToken,
         ackTimeout: ackTimeout ?? this.ackTimeout,
         batchSize: batchSize ?? this.batchSize,
       );

lib/core/constants/asset_paths.dart

@@ -1,11 +1,17 @@
 /// Typed references to bundled assets.
 ///
-/// Only sounds are bundled: product imagery uses emoji glyphs and the welcome
-/// artwork is painted in code, so there are no raster or SVG assets to ship.
+/// Product imagery uses emoji glyphs and the welcome artwork is painted in
+/// code, so the only raster asset shipped is the mark itself.
 class AssetPaths {
   const AssetPaths._();
 
   static const String _snd = 'assets/sounds';
+  static const String _img = 'assets/images';
+
+  /// The Nearle mark. Every place that used to draw a letter "N" in a
+  /// gradient box now renders this instead, so the brand cannot drift between
+  /// the login screen, the sidebar and the cashier header.
+  static const String logo = '$_img/logo.png';
 
   static const String beepSuccess = '$_snd/beep_success.wav';
   static const String beepError = '$_snd/beep_error.wav';

lib/core/router/app_router.dart

@@ -8,6 +8,7 @@ import '../../presentation/auth/screens/login_screen.dart';
 import '../../presentation/payment/screens/payment_screen.dart';
 import '../../presentation/pos/screens/pos_dashboard_screen.dart';
 import '../../presentation/receipt/screens/receipt_screen.dart';
+import '../../presentation/shift/screens/end_shift_screen.dart';
 
 class AppRoutes {
   const AppRoutes._();
@@ -19,6 +20,10 @@ class AppRoutes {
   static const String pos = '/';
   static const String payment = '/payment';
   static const String receipt = '/receipt';
+
+  /// Drawer count and hand-over. Reached from the session-end chooser, never
+  /// linked to directly, and guarded like every other signed-in route.
+  static const String endShift = '/end-shift';
 }
 
 /// Router with an authentication guard.
@@ -60,6 +65,11 @@ final routerProvider = Provider<GoRouter>((ref) {
         pageBuilder: (context, state) =>
             _fade(state, const PosDashboardScreen()),
       ),
+      GoRoute(
+        path: AppRoutes.endShift,
+        name: 'endShift',
+        pageBuilder: (context, state) => _slide(state, const EndShiftScreen()),
+      ),
       GoRoute(
         path: AppRoutes.payment,
         name: 'payment',

lib/core/widgets/brand_mark.dart

@@ -0,0 +1,66 @@
+import 'package:flutter/material.dart';
+
+import '../constants/asset_paths.dart';
+import '../theme/app_colors.dart';
+
+/// The Nearle mark on its tile.
+///
+/// Every surface that shows the brand — login, sidebar, cashier header —
+/// renders this, so the mark cannot drift between them. It replaces the
+/// hand-drawn letter "N" in a gradient box that each of those screens used to
+/// build for itself.
+class BrandMark extends StatelessWidget {
+  const BrandMark({
+    super.key,
+    this.size = 36,
+    this.radius,
+    this.onDark = false,
+  });
+
+  final double size;
+  final double? radius;
+
+  /// Set on a coloured background, where the tile needs no border to separate
+  /// it from what is behind.
+  final bool onDark;
+
+  @override
+  Widget build(BuildContext context) {
+    final corner = BorderRadius.circular(radius ?? size * 0.28);
+
+    return Container(
+      width: size,
+      height: size,
+      // Clipped, not padded: the mark fills the tile edge to edge and the
+      // rounded corner does the trimming, so nothing can spill past the box
+      // whatever aspect ratio the file happens to have.
+      clipBehavior: Clip.antiAlias,
+      decoration: BoxDecoration(
+        color: Colors.white,
+        borderRadius: corner,
+        border: onDark ? null : Border.all(color: AppColors.border),
+      ),
+      child: Image.asset(
+        AssetPaths.logo,
+        fit: BoxFit.fill,
+        width: size,
+        height: size,
+        filterQuality: FilterQuality.medium,
+        // A missing or undeclared asset would otherwise blank the brand out
+        // of the sidebar entirely; the letterform is a poor substitute but a
+        // better failure than nothing.
+        errorBuilder: (context, _, __) => FittedBox(
+          fit: BoxFit.contain,
+          child: Text(
+            'N',
+            style: TextStyle(
+              color: AppColors.primary,
+              fontWeight: FontWeight.w800,
+              fontSize: size,
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}