Fix CI: resolve analyzer errors, remove invalid asset reference, stabilize lint rules

Author: Anbu-00001

mobile_app/lib/core/map/tile_fetch_diagnostic.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 import 'dart:io';
+import 'dart:typed_data';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 

mobile_app/lib/core/ws_service.dart

@@ -100,11 +100,11 @@ class WsService {
     // 1. Persist to sync queue
     final queueId = await _db.into(_db.syncQueue).insert(
       SyncQueueCompanion.insert(
-        entity_type: 'Message',
-        entity_id: entityId ?? 'msg_${DateTime.now().millisecondsSinceEpoch}',
+        entityType: 'Message',
+        entityId: entityId ?? 'msg_${DateTime.now().millisecondsSinceEpoch}',
         operation: 'SEND',
         data: jsonEncode(msg),
-        sequence_num: 0,
+        sequenceNum: 0,
         timestamp: DateTime.now(),
         status: const Value('queued'),
       ),
@@ -128,7 +128,7 @@ class WsService {
   }
 
   Future<void> _flushQueue() async {
-    final pendingItems = await (_db.select(_db.syncQueue)..where((t) => t.status.equals('queued') & t.entity_type.equals('Message'))).get();
+    final pendingItems = await (_db.select(_db.syncQueue)..where((t) => t.status.equals('queued') & t.entityType.equals('Message'))).get();
     for (var item in pendingItems) {
       _trySendMessage(item.id, jsonDecode(item.data));
     }

mobile_app/lib/data/database.dart

@@ -8,29 +8,29 @@ part 'database.g.dart';
 
 class Incidents extends Table {
   TextColumn get id => text()();
-  TextColumn get reporter_id => text()();
+  TextColumn get reporterId => text().named('reporter_id')();
   TextColumn get type => text()();
   RealColumn get lat => real()();
   RealColumn get lon => real()();
-  TextColumn get assigned_responder_id => text().nullable()();
+  TextColumn get assignedResponderId => text().named('assigned_responder_id').nullable()();
   TextColumn get priority => text()();
-  TextColumn get status_enum => text()();
-  TextColumn get client_id => text()();
-  IntColumn get sequence_num => integer()();
-  BoolColumn get deleted_flag => boolean().withDefault(const Constant(false))();
-  DateTimeColumn get updated_at => dateTime()();
+  TextColumn get statusEnum => text().named('status_enum')();
+  TextColumn get clientId => text().named('client_id')();
+  IntColumn get sequenceNum => integer().named('sequence_num')();
+  BoolColumn get deletedFlag => boolean().named('deleted_flag').withDefault(const Constant(false))();
+  DateTimeColumn get updatedAt => dateTime().named('updated_at')();
 
   @override
   Set<Column> get primaryKey => {id};
 }
 
 class SyncQueue extends Table {
   IntColumn get id => integer().autoIncrement()();
-  TextColumn get entity_type => text()();
-  TextColumn get entity_id => text()();
+  TextColumn get entityType => text().named('entity_type')();
+  TextColumn get entityId => text().named('entity_id')();
   TextColumn get operation => text()();
   TextColumn get data => text()(); // JSON string representation
-  IntColumn get sequence_num => integer()();
+  IntColumn get sequenceNum => integer().named('sequence_num')();
   DateTimeColumn get timestamp => dateTime()();
   TextColumn get status => text().withDefault(const Constant('queued'))(); // queued, sent, failed
 }