chore: remove Firebase dependencies and legacy code (Fase 4)

- Delete all firebase_*_repository.dart files (replaced by api_* equivalents)
- Remove cloud_firestore, firebase_auth, firebase_storage, firebase_core from all package pubspecs
- Remove cloud_firestore from main pubspec.yaml
- Delete firebase_options.dart (no longer referenced)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/score_repository/lib/src/repositories/firebase_score_repository.dart

@@ -1,116 +0,0 @@
-import 'dart:async';
-import 'dart:developer';
-
-import 'package:cloud_firestore/cloud_firestore.dart';
-import 'package:firebase_auth/firebase_auth.dart';
-import 'package:score_repository/score_repository.dart';
-import 'package:score_repository/src/entities/comment_entity.dart';
-
-class FirebaseScoreRepository {
-  final reputationsCollection =
-      FirebaseFirestore.instance.collection('reputations');
-
-  final commentsCollection = FirebaseFirestore.instance.collection('comments');
-
-  ReputationEntity? _reputation;
-  final StreamController<ReputationEntity> _reputationController =
-      StreamController<ReputationEntity>.broadcast();
-
-  Stream<ReputationEntity> streamReputation() {
-    return _reputationController.stream;
-  }
-
-  FirebaseScoreRepository() {
-    FirebaseAuth.instance.userChanges().listen((user) async {
-      if (user != null) {
-        final reputation = await getReputationByUserId(user.uid);
-        _reputation = reputation;
-      } else {
-        _reputation = null;
-      }
-      _reputationController.add(_reputation ??
-          const ReputationEntity(
-            total: 0,
-            average: 0,
-            totalPro: 0,
-            averagePro: 0,
-          ));
-    });
-  }
-
-  ReputationEntity getReputation() {
-    return _reputation ??
-        const ReputationEntity(
-          total: 0,
-          average: 0,
-          totalPro: 0,
-          averagePro: 0,
-        );
-  }
-
-  Future<ReputationEntity> getReputationByUserId(String userId) async {
-    try {
-      final snap = await reputationsCollection.doc(userId).get();
-      return ReputationEntity.fromDocument(snap.data()!);
-    } catch (e) {
-      log(e.toString());
-      return const ReputationEntity(
-        total: 0,
-        average: 0,
-        totalPro: 0,
-        averagePro: 0,
-      );
-    }
-  }
-
-  Stream<List<CommentEntity>> getScoresForUser(String userId) {
-    return commentsCollection
-        .where('destination_id', isEqualTo: userId)
-        .where('is_from_user', isEqualTo: false)
-        .snapshots()
-        .map((querySnapshot) => querySnapshot.docs
-            .map((doc) => CommentEntity.fromDocument(doc.data()))
-            .toList());
-  }
-
-  Stream<List<CommentEntity>> getScoresForProfessional(String userId) {
-    return commentsCollection
-        .where('destination_id', isEqualTo: userId)
-        .where('is_from_user', isEqualTo: true)
-        .snapshots()
-        .map((querySnapshot) => querySnapshot.docs
-            .map((doc) => CommentEntity.fromDocument(doc.data()))
-            .toList());
-  }
-
-  addComment(CommentEntity comment) async {
-    await commentsCollection.add(comment.toDocument());
-
-    final query = await commentsCollection
-        .where('destination_id', isEqualTo: comment.destinationId)
-        .where('is_from_user', isEqualTo: comment.isFromUser)
-        .get();
-
-    var total = 0.0;
-    var count = 0;
-    for (var doc in query.docs) {
-      final comment = CommentEntity.fromDocument(doc.data());
-      total += comment.score;
-      count++;
-    }
-
-    if (count > 0) {
-      final average = total / count;
-      if (comment.isFromUser) {
-        await reputationsCollection.doc(comment.destinationId).set(
-            {'total_pro': count, 'average_pro': average},
-            SetOptions(merge: true));
-      } else {
-        await reputationsCollection.doc(comment.destinationId).set({
-          'total': count,
-          'average': average,
-        }, SetOptions(merge: true));
-      }
-    }
-  }
-}

packages/score_repository/pubspec.yaml

@@ -14,10 +14,6 @@ dependencies:
   http: ^1.1.0
   shared_preferences: ^2.0.10
 
-  # Firebase kept for FirebaseScoreRepository (legacy) and CommentEntity uses Timestamp
-  cloud_firestore: ^4.15.4
-  firebase_core: ^2.25.4
-  firebase_auth: ^4.17.4
 
 dev_dependencies:
   flutter_lints: ^2.0.0