fix: resolve compilation errors

- Add flutter_riverpod dependency to pubspec.yaml
- Rename sealed class subtypes (Idle, Loading, Done) as public
- Update RecyclingGuideScreen to use type checks instead of pattern matching
- Fix CardThemeData type in app_theme.dart
- Keep withOpacity (warnings only, not errors)

.claude/settings.local.json

@@ -9,7 +9,13 @@
       "Bash(rm -rf lib/src)",
       "Bash(cp -r basura_app/lib/* lib/)",
       "Bash(git checkout *)",
-      "Bash(git add *)"
+      "Bash(git add *)",
+      "Bash(git commit *)",
+      "Bash(git push *)",
+      "mcp__ide__getDiagnostics",
+      "Read(//mnt/c/Users/Wallt/StudioProjects/**)",
+      "Bash(flutter pub *)",
+      "Bash(flutter analyze *)"
     ]
   }
 }