Miler rider app: surface system, visible design language, backend lifecycle

Design system
- MilerSurface ladder (canvas → working → raised → floating) with MilerPanel
  as layer 1; canvas moved to #DEE3EA so white separates at 1.290:1.
- Visible vocabulary applied across Home, Deliveries, Activity, Account and
  the sheets: hero heads (tabular numeral + small caption, clamped at 1.3x),
  canvas wells for anything that opens, small filled tags for shelf labels,
  demoted placeholders. Recorded in DESIGN_SYSTEM.md §6.
- One icon family: 222 Material glyphs migrated to Lucide; none left outside
  lib/xpress.
- Colour semantics corrected: amber only for what is genuinely owed, brand red
  reserved for the live stop, disabled primaries go neutral rather than pale.

Data and lifecycle
- lib/data/lifecycle.dart reads mutations for what they prove; route_order.dart
  makes admin sequence the single ordering authority; service_day.dart, and
  stop_area.dart rewritten against live Coimbatore addresses (digit-token
  stripping, city stoplist, street suffixes, stammer collapse).
- countLabel states the load once, in bags.

Testing
- 1440 tests passing; golden shot harnesses for Home, Deliveries, Activity,
  sheets and verify, with test/failures/ now gitignored (diff debris).
- New pins: home_gutter_test, stop_area_test, plus updated structural bounds.

Note: this commit also carries pre-existing working-tree deletions that were
present before this work (API_SPEC.md, README.md, demo test fixtures).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

lib/views/onboardscreens/Sign_in.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:get/get.dart';
@@ -239,7 +240,7 @@ class _SignInState extends State<SignIn> {
       cursorColor: ColorConstants.primary,
       style: TextStyle(
         fontSize: 18.sp,
-        fontWeight: FontWeight.w700,
+        fontWeight: FontWeight.w600,
         letterSpacing: 1.2,
         color: ColorConstants.slateText,
         fontFamily: FontConstants.fontFamily,
@@ -258,7 +259,7 @@ class _SignInState extends State<SignIn> {
         floatingLabelBehavior: FloatingLabelBehavior.always,
         labelStyle: TextStyle(
           fontSize: 13.sp,
-          fontWeight: FontWeight.w700,
+          fontWeight: FontWeight.w600,
           letterSpacing: -0.1,
           color: error
               ? ColorConstants.errorRed
@@ -271,7 +272,7 @@ class _SignInState extends State<SignIn> {
         hintStyle: TextStyle(
           color: ColorConstants.secondaryText,
           fontSize: 18.sp,
-          fontWeight: FontWeight.w600,
+          fontWeight: FontWeight.w500,
           letterSpacing: 1.2,
           fontFamily: FontConstants.fontFamily,
         ),
@@ -292,7 +293,7 @@ class _SignInState extends State<SignIn> {
                 '+91',
                 style: TextStyle(
                   fontSize: 17.sp,
-                  fontWeight: FontWeight.w800,
+                  fontWeight: FontWeight.w700,
                   letterSpacing: -0.2,
                   color: ColorConstants.slateText,
                   fontFamily: FontConstants.fontFamily,
@@ -312,7 +313,7 @@ class _SignInState extends State<SignIn> {
             ? Padding(
                 padding: EdgeInsets.only(right: 14.w),
                 child: Icon(
-                  Icons.check_circle_rounded,
+                  LucideIcons.circleCheck,
                   size: 20.sp,
                   color: ColorConstants.acceptGreen,
                 ),
@@ -357,7 +358,7 @@ class _SignInState extends State<SignIn> {
                 text: 'Terms of Service',
                 style: TextStyle(
                   color: ColorConstants.slateText,
-                  fontWeight: FontWeight.w800,
+                  fontWeight: FontWeight.w700,
                   decoration: TextDecoration.underline,
                   decorationColor: ColorConstants.borderStrong,
                   fontFamily: FontConstants.fontFamily,
@@ -369,7 +370,7 @@ class _SignInState extends State<SignIn> {
                 text: 'Privacy Policy',
                 style: TextStyle(
                   color: ColorConstants.slateText,
-                  fontWeight: FontWeight.w800,
+                  fontWeight: FontWeight.w700,
                   decoration: TextDecoration.underline,
                   decorationColor: ColorConstants.borderStrong,
                   fontFamily: FontConstants.fontFamily,
@@ -418,7 +419,9 @@ class _IndiaFlag extends StatelessWidget {
           borderRadius: BorderRadius.circular(2.5.r),
           child: Column(
             children: [
-              const Expanded(child: ColoredBox(color: _saffron, child: SizedBox.expand())),
+              const Expanded(
+                child: ColoredBox(color: _saffron, child: SizedBox.expand()),
+              ),
               Expanded(
                 child: Container(
                   color: Colors.white,
@@ -433,7 +436,9 @@ class _IndiaFlag extends StatelessWidget {
                   ),
                 ),
               ),
-              const Expanded(child: ColoredBox(color: _green, child: SizedBox.expand())),
+              const Expanded(
+                child: ColoredBox(color: _green, child: SizedBox.expand()),
+              ),
             ],
           ),
         ),