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/schemas/homepage.py

@@ -12,6 +12,8 @@ class HomepageConfigOut(BaseModel):
     hero_cta_url: str
     featured_properties_limit: int
     hero_image_url: str | None = None
+    hero_image_light_url: str | None = None
+    hero_image_dark_url: str | None = None
 
 
 class HomepageConfigIn(BaseModel):
@@ -21,6 +23,8 @@ class HomepageConfigIn(BaseModel):
     hero_cta_url: str = "/imoveis"
     featured_properties_limit: int = 6
     hero_image_url: str | None = None
+    hero_image_light_url: str | None = None
+    hero_image_dark_url: str | None = None
 
     @field_validator("hero_headline")
     @classmethod
@@ -35,3 +39,17 @@ class HomepageConfigIn(BaseModel):
         if not (1 <= v <= 12):
             raise ValueError("featured_properties_limit deve estar entre 1 e 12")
         return v
+
+
+class HomepageHeroImagesIn(BaseModel):
+    hero_image_url: str | None = None
+    hero_image_light_url: str | None = None
+    hero_image_dark_url: str | None = None
+
+    @field_validator("hero_image_url", "hero_image_light_url", "hero_image_dark_url")
+    @classmethod
+    def normalize_empty_to_none(cls, v: str | None) -> str | None:
+        if v is None:
+            return None
+        trimmed = v.strip()
+        return trimmed or None