Redimensionner photos DSLR (max 3000px, JPEG 92%) pour affichage rapide

Les RAW du Canon 6D font 24Mo, trop lent pour le navigateur.

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

backend/camera.py

@@ -146,6 +146,8 @@ class Camera:
             return self._capture_simulation(chemin_dest)
 
     def _capture_gphoto2(self, chemin_dest: Path) -> Path | None:
+        from PIL import Image as PILImage
+
         for attempt in range(3):
             try:
                 chemin_camera = self.camera.capture(gp.GP_CAPTURE_IMAGE)
@@ -153,8 +155,19 @@ class Camera:
                 self.camera.file_get(
                     chemin_camera.folder, chemin_camera.name, gp.GP_FILE_TYPE_NORMAL, fichier_camera
                 )
-                fichier_camera.save(str(chemin_dest))
-                log.info(f"Photo capturee (DSLR) : {chemin_dest}")
+                # Sauvegarder le fichier brut temporairement
+                tmp_path = str(chemin_dest) + ".tmp"
+                fichier_camera.save(tmp_path)
+
+                # Redimensionner si trop gros (max 3000px de large, JPEG 92%)
+                img = PILImage.open(tmp_path)
+                if img.width > 3000:
+                    ratio = 3000 / img.width
+                    img = img.resize((3000, int(img.height * ratio)), PILImage.LANCZOS)
+                img.save(str(chemin_dest), "JPEG", quality=92)
+                Path(tmp_path).unlink(missing_ok=True)
+
+                log.info(f"Photo capturee (DSLR) : {chemin_dest} ({img.width}x{img.height})")
                 return chemin_dest
             except gp.GPhoto2Error as e:
                 if "I/O in progress" in str(e) and attempt < 2: