Animations custom (video/GIF) + selection aleatoire

- Upload de GIF/MP4/WebM comme animations de compte a rebours
- Checkboxes pour activer/desactiver chaque animation (CSS + custom)
- Si plusieurs actives, tirage aleatoire a chaque photo
- Preview dans le backoffice avec tirage aleatoire
- Suppression des animations custom importees
- Les animations custom se jouent en plein ecran avant la capture

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/config.py

@@ -10,6 +10,7 @@ DOSSIER_PHOTOS = RACINE / "data" / "photos"
 DOSSIER_EXPORTS = RACINE / "data" / "exports"
 DOSSIER_OVERLAYS = RACINE / "frontend" / "assets" / "overlays"
 DOSSIER_FONDS = RACINE / "frontend" / "assets" / "backgrounds"
+DOSSIER_ANIMATIONS = RACINE / "frontend" / "assets" / "animations"
 
 
 def charger_config() -> dict:
@@ -48,5 +49,5 @@ def _merge_profond(base: dict, modifications: dict):
 
 
 # Initialisation des dossiers au chargement du module
-for dossier in [DOSSIER_PHOTOS, DOSSIER_EXPORTS, DOSSIER_OVERLAYS, DOSSIER_FONDS]:
+for dossier in [DOSSIER_PHOTOS, DOSSIER_EXPORTS, DOSSIER_OVERLAYS, DOSSIER_FONDS, DOSSIER_ANIMATIONS]:
     dossier.mkdir(parents=True, exist_ok=True)

backend/main.py

@@ -10,7 +10,7 @@ from fastapi.responses import FileResponse, JSONResponse
 from fastapi.staticfiles import StaticFiles
 
 from backend.config import (
-    RACINE, DOSSIER_PHOTOS, DOSSIER_EXPORTS, DOSSIER_OVERLAYS, DOSSIER_FONDS,
+    RACINE, DOSSIER_PHOTOS, DOSSIER_EXPORTS, DOSSIER_OVERLAYS, DOSSIER_FONDS, DOSSIER_ANIMATIONS,
     charger_config, sauvegarder_config, mettre_a_jour_config,
 )
 from backend.camera import camera
@@ -348,6 +348,44 @@ async def api_animations():
     return ANIMATIONS_CAR
 
 
+@app.get("/api/animations/custom")
+async def api_animations_custom():
+    """Liste les animations personnalisees (GIF/video)."""
+    extensions = {".gif", ".mp4", ".webm"}
+    fichiers = []
+    if DOSSIER_ANIMATIONS.exists():
+        for f in sorted(DOSSIER_ANIMATIONS.iterdir()):
+            if f.suffix.lower() in extensions:
+                fichiers.append(f.name)
+    config = charger_config()
+    actives = config.get("animations_custom", {}).get("actives", [])
+    return {"tous": fichiers, "actives": actives}
+
+
+@app.post("/api/animations/custom")
+async def api_animations_custom_update(donnees: dict):
+    actives = donnees.get("actives", [])
+    mettre_a_jour_config({"animations_custom": {"actives": actives}})
+    return {"actives": actives}
+
+
+@app.post("/api/upload/animation")
+async def api_upload_animation(fichier: UploadFile = File(...)):
+    chemin = DOSSIER_ANIMATIONS / fichier.filename
+    with open(chemin, "wb") as f:
+        f.write(await fichier.read())
+    return {"nom": fichier.filename}
+
+
+@app.delete("/api/animations/custom/{nom}")
+async def api_supprimer_animation(nom: str):
+    chemin = DOSSIER_ANIMATIONS / nom
+    if chemin.exists() and chemin.parent == DOSSIER_ANIMATIONS:
+        chemin.unlink()
+        return {"succes": True}
+    return JSONResponse({"erreur": "Fichier introuvable"}, status_code=404)
+
+
 # --- API Systeme ---
 
 @app.post("/api/systeme/redemarrer")