fix(mobile): повторный enroll и удаление устройств в UI (0.9.10).

При повторной привязке Seaca переиспользуется запись device_uuid вместо INSERT.
Добавлены POST /devices/{id}/revoke и DELETE для полного удаления записи в настройках SAC.

backend/app/services/mobile_enrollment.py

@@ -1,4 +1,4 @@
-"""Создание и проверка кодов регистрации Seaca."""
+"""Создание и проверка кодов регистрации Seaca."""
 
 from __future__ import annotations
 
@@ -223,31 +223,50 @@ def enroll_device(
     if code_row.target_user_id is not None and user.id != code_row.target_user_id:
         raise ValueError("enrollment code is bound to another user")
 
+    existing = db.scalar(select(MobileDevice).where(MobileDevice.device_uuid == cleaned_uuid))
+    if existing is not None and existing.user_id != user.id:
+        raise ValueError("device_uuid already registered to another user")
+
     active_count = _count_active_devices(db, user.id)
+    if (
+        existing is not None
+        and existing.user_id == user.id
+        and existing.revoked_at is None
+    ):
+        active_count -= 1
     if active_count >= mobile_cfg.max_devices_per_user:
         raise ValueError("device limit reached for this user")
 
-    existing = db.scalar(select(MobileDevice).where(MobileDevice.device_uuid == cleaned_uuid))
-    if existing is not None:
-        if existing.revoked_at is None and existing.user_id != user.id:
-            raise ValueError("device_uuid already registered to another user")
-        if existing.revoked_at is None:
-            revoke_refresh_tokens_for_device(db, existing.id)
-            existing.revoked_at = now
-            existing = None
+    cleaned_display = (display_name or "").strip() or "Android"
+    cleaned_platform = (platform or "android").strip() or "android"
+    cleaned_app_version = (app_version or "").strip() or None
+    cleaned_fcm = (fcm_token or "").strip() or None
 
-    device = MobileDevice(
-        user_id=user.id,
-        device_uuid=cleaned_uuid,
-        display_name=(display_name or "").strip() or "Android",
-        platform=(platform or "android").strip() or "android",
-        app_version=(app_version or "").strip() or None,
-        fcm_token=(fcm_token or "").strip() or None,
-        fcm_token_updated_at=now if fcm_token else None,
-        enrollment_code_id=code_row.id,
-        last_seen_at=now,
-    )
-    db.add(device)
+    if existing is not None:
+        revoke_refresh_tokens_for_device(db, existing.id)
+        existing.revoked_at = None
+        existing.user_id = user.id
+        existing.display_name = cleaned_display
+        existing.platform = cleaned_platform
+        existing.app_version = cleaned_app_version
+        existing.fcm_token = cleaned_fcm
+        existing.fcm_token_updated_at = now if cleaned_fcm else None
+        existing.enrollment_code_id = code_row.id
+        existing.last_seen_at = now
+        device = existing
+    else:
+        device = MobileDevice(
+            user_id=user.id,
+            device_uuid=cleaned_uuid,
+            display_name=cleaned_display,
+            platform=cleaned_platform,
+            app_version=cleaned_app_version,
+            fcm_token=cleaned_fcm,
+            fcm_token_updated_at=now if cleaned_fcm else None,
+            enrollment_code_id=code_row.id,
+            last_seen_at=now,
+        )
+        db.add(device)
     code_row.use_count += 1
     db.flush()