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/models/contact_config.py

@@ -0,0 +1,22 @@
+from app.extensions import db
+
+
+class ContactConfig(db.Model):
+    __tablename__ = "contact_config"
+
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    address_street = db.Column(db.String(200), nullable=True)
+    address_neighborhood_city = db.Column(db.String(200), nullable=True)
+    address_zip = db.Column(db.String(20), nullable=True)
+    phone = db.Column(db.String(30), nullable=True)
+    email = db.Column(db.String(254), nullable=True)
+    business_hours = db.Column(db.Text, nullable=True)
+    updated_at = db.Column(
+        db.DateTime,
+        nullable=False,
+        server_default=db.func.now(),
+        onupdate=db.func.now(),
+    )
+
+    def __repr__(self) -> str:
+        return f"<ContactConfig id={self.id}>"