feat: features 025-032 - favoritos, contatos, trabalhe-conosco, area-cliente, navbar, hero-light-dark, performance-homepage

- feat(025): favoritos locais com FavoritesContext, HeartButton, PublicFavoritesPage
- feat(026): central de contatos admin (leads/contatos unificados)
- feat(027): configuração da página de contato via admin
- feat(028): trabalhe conosco - candidaturas com upload e admin
- feat(029): UX área do cliente - visitas, comparação, perfil
- feat(030): navbar UX - menu mobile, ThemeToggle, useFavorites
- feat(031): hero light/dark - imagens separadas por tema, upload, preview, seed
- feat(032): performance homepage - Promise.all parallel fetches, sessionStorage cache,
  preload hero image, loading=lazy nos cards, useInView hook, will-change carrossel,
  keyframes em index.css, AgentsCarousel e HomeScrollScene via props
- fix: light mode HomeScrollScene - gradiente, cores de texto, scroll hint

migrations: g1h2i3j4k5l6 (source em leads), h1i2j3k4l5m6 (contact_config),
            i1j2k3l4m5n6 (job_applications), j2k3l4m5n6o7 (hero theme images)

backend/app/routes/homepage.py

@@ -1,7 +1,10 @@
-from flask import Blueprint, jsonify
+from flask import Blueprint, jsonify, request
+from pydantic import ValidationError
 
+from app.extensions import db
 from app.models.homepage import HomepageConfig
-from app.schemas.homepage import HomepageConfigOut
+from app.schemas.homepage import HomepageConfigOut, HomepageHeroImagesIn
+from app.utils.auth import require_admin
 
 homepage_bp = Blueprint("homepage", __name__, url_prefix="/api/v1")
 
@@ -11,4 +14,33 @@ def get_homepage_config():
     config = HomepageConfig.query.first()
     if config is None:
         return jsonify({"error": "Homepage config not found"}), 404
-    return jsonify(HomepageConfigOut.model_validate(config).model_dump())
+    return jsonify(HomepageConfigOut.model_validate(config).model_dump(mode="json"))
+
+
+@homepage_bp.put("/admin/homepage-config")
+@require_admin
+def update_homepage_hero_images():
+    try:
+        data = HomepageHeroImagesIn.model_validate(request.get_json() or {})
+    except ValidationError as e:
+        return jsonify({"error": e.errors(include_url=False)}), 422
+
+    config = HomepageConfig.query.first()
+    if config is None:
+        config = HomepageConfig(
+            hero_headline="Encontre o imóvel dos seus sonhos",
+            hero_subheadline="Os melhores imóveis para comprar ou alugar na sua região",
+            hero_cta_label="Ver Imóveis",
+            hero_cta_url="/imoveis",
+            featured_properties_limit=6,
+        )
+        db.session.add(config)
+
+    config.hero_image_url = data.hero_image_url
+    config.hero_image_light_url = data.hero_image_light_url
+    config.hero_image_dark_url = data.hero_image_dark_url
+
+    db.session.commit()
+    db.session.refresh(config)
+
+    return jsonify(HomepageConfigOut.model_validate(config).model_dump(mode="json")), 200