fix(database): add conditional imports for web/native database connections

- Add connection_web.dart for IndexedDB via drift
- Add connection_native.dart for sqlite3
- Remove direct platform-specific imports from database.dart
- Enable web compilation without FFI dependencies

lib/models/database/connection_native.dart

@@ -0,0 +1,25 @@
+import 'dart:io';
+import 'package:drift/drift.dart';
+import 'package:drift/native.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:path/path.dart' as p;
+import 'package:sqlite3/sqlite3.dart';
+import 'package:sqlite3_flutter_libs/sqlite3_flutter_libs.dart';
+
+DatabaseConnection connect() {
+  return DatabaseConnection.delayed(Future(() async {
+    if (Platform.isAndroid) {
+      await applyWorkaroundToOpenSqlite3OnOldAndroidVersions();
+    }
+
+    final cacheBase = (await getTemporaryDirectory()).path;
+    // Make sqlite3 pick a more suitable location for temporary files - the
+    // one from the system may be inaccessible due to sandboxing.
+    // We can't access /tmp on Android, which sqlite3 would try by default.
+    sqlite3.tempDirectory = cacheBase;
+
+    final appDocDir = await getApplicationDocumentsDirectory();
+    final dbPath = p.join(appDocDir.path, 'spotube.db');
+    return NativeDatabase(File(dbPath));
+  }));
+}

lib/models/database/connection_web.dart

@@ -0,0 +1,8 @@
+import 'package:drift/drift.dart';
+import 'package:drift/web.dart';
+
+DatabaseConnection connect() {
+  // IndexedDB vía drift para web
+  final db = WebDatabase('tunestream_db');
+  return DatabaseConnection.fromExecutor(db);
+}

lib/models/database/database.dart

@@ -1,13 +1,10 @@
 library database;
 
 import 'dart:convert';
-import 'dart:io';
 
 import 'package:drift/drift.dart';
 import 'package:encrypt/encrypt.dart';
 import 'package:media_kit/media_kit.dart' hide Track;
-import 'package:path/path.dart';
-import 'package:path_provider/path_provider.dart';
 import 'package:shadcn_flutter/shadcn_flutter.dart' show ThemeMode, Colors;
 import 'package:spotify/spotify.dart' hide Playlist;
 import 'package:spotube/models/database/database.steps.dart';
@@ -17,12 +14,13 @@ import 'package:spotube/services/kv_store/kv_store.dart';
 import 'package:spotube/services/sourced_track/enums.dart';
 import 'package:flutter/widgets.dart' hide Table, Key, View;
 import 'package:spotube/modules/settings/color_scheme_picker_dialog.dart';
-import 'package:drift/native.dart';
 import 'package:spotube/services/youtube_engine/newpipe_engine.dart';
 import 'package:spotube/services/youtube_engine/youtube_explode_engine.dart';
 import 'package:spotube/services/youtube_engine/yt_dlp_engine.dart';
-import 'package:sqlite3/sqlite3.dart';
-import 'package:sqlite3_flutter_libs/sqlite3_flutter_libs.dart';
+
+// Conditional import para diferentes plataformas
+import 'connection_native.dart'
+    if (dart.library.html) 'connection_web.dart';
 
 part 'database.g.dart';
 
@@ -126,26 +124,6 @@ class AppDatabase extends _$AppDatabase {
   }
 }
 
-LazyDatabase _openConnection() {
-  // the LazyDatabase util lets us find the right location for the file async.
-  return LazyDatabase(() async {
-    // put the database file, called db.sqlite here, into the documents folder
-    // for your app.
-    final dbFolder = await getApplicationSupportDirectory();
-    final file = File(join(dbFolder.path, 'db.sqlite'));
-
-    // Also work around limitations on old Android versions
-    if (Platform.isAndroid) {
-      await applyWorkaroundToOpenSqlite3OnOldAndroidVersions();
-    }
-
-    // Make sqlite3 pick a more suitable location for temporary files - the
-    // one from the system may be inaccessible due to sandboxing.
-    final cacheBase = (await getTemporaryDirectory()).path;
-    // We can't access /tmp on Android, which sqlite3 would try by default.
-    // Explicitly tell it about the correct temporary directory.
-    sqlite3.tempDirectory = cacheBase;
-
-    return NativeDatabase.createInBackground(file);
-  });
+DatabaseConnection _openConnection() {
+  return connect();
 }