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>

pubspec.yaml

@@ -58,6 +58,7 @@ dependencies:
   flutter_screenutil: ^5.9.3
   google_fonts: ^6.3.3
   shimmer: ^3.0.0
+  skeletonizer: ^2.1.3
   flutter_launcher_icons: ^0.14.4
   scratcher: ^2.5.0
   confetti: ^0.8.0
@@ -65,6 +66,15 @@ dependencies:
   mqtt_client: ^10.3.0
   flutter_map: ^8.3.1
   latlong2: ^0.10.1
+  # The delivery line's maps. The parcel line draws its maps with flutter_map
+  # (OSM tiles + OSRM, keyless — see views/helpers/widgets/miler_map.dart); the
+  # ported delivery screens under lib/xpress were built against MapLibre and are
+  # kept verbatim, so both engines ship. Only one line runs per session, so only
+  # one is ever instantiated.
+  maplibre_gl: ^0.26.2
+  animated_toggle_switch: ^0.8.7
+  another_flushbar: ^2.2.4
+  lucide_icons_flutter: ^3.1.17
 
 dev_dependencies:
   flutter_test:
@@ -102,25 +112,48 @@ flutter:
     - assets/lotties/
 
   fonts:
+    # The delivery line's typeface. The ported screens under lib/xpress read
+    # FontConstants.fontFamily = 'Proxima Nova' on every text style; the files
+    # were already in assets/fonts but the family was never declared, so without
+    # this every delivery screen falls back to Roboto.
+    - family: Proxima Nova
+      fonts:
+        - asset: assets/fonts/ProximaNova/proximanova_regular.ttf
+          weight: 400
+        - asset: assets/fonts/ProximaNova/proximanova_bold.otf
+          weight: 700
     - family: Manrope
       fonts:
         - asset: assets/fonts/Manrope/Manrope-VF.ttf
     - family: PlusJakartaSans
       fonts:
         - asset: assets/fonts/PlusJakartaSans/PlusJakartaSans-VF.ttf
-    - family: poppins
+    # ── The app's typeface ──
+    #
+    # Declared as `poppins` with a lowercase path on every asset — and the files
+    # on disk are `assets/fonts/Poppins/Poppins-*.ttf`. Asset bundling is
+    # case-sensitive on both platforms, so not one of these seven resolved and
+    # the family had never rendered a single glyph. Anything asking for it fell
+    # back to Roboto, silently.
+    #
+    # All seven static weights are declared because Poppins ships as separate
+    # files rather than a variable font like Manrope did. The app leans on w800
+    # and w900 for headings; without those two entries Flutter would synthesise
+    # them by smearing SemiBold, which is what makes a heading look muddy at
+    # exactly the size it is meant to be read from.
+    - family: Poppins
       fonts:
-        - asset: assets/fonts/poppins/poppins-Light.ttf
+        - asset: assets/fonts/Poppins/Poppins-Light.ttf
           weight: 300
-        - asset: assets/fonts/poppins/poppins-Regular.ttf
+        - asset: assets/fonts/Poppins/Poppins-Regular.ttf
           weight: 400
-        - asset: assets/fonts/poppins/poppins-Medium.ttf
+        - asset: assets/fonts/Poppins/Poppins-Medium.ttf
           weight: 500
-        - asset: assets/fonts/poppins/poppins-SemiBold.ttf
+        - asset: assets/fonts/Poppins/Poppins-SemiBold.ttf
           weight: 600
-        - asset: assets/fonts/poppins/poppins-Bold.ttf
+        - asset: assets/fonts/Poppins/Poppins-Bold.ttf
           weight: 700
-        - asset: assets/fonts/poppins/poppins-ExtraBold.ttf
+        - asset: assets/fonts/Poppins/Poppins-ExtraBold.ttf
           weight: 800
-        - asset: assets/fonts/poppins/poppins-Black.ttf
+        - asset: assets/fonts/Poppins/Poppins-Black.ttf
           weight: 900