docs: 明确迁移入口仅随计划启用，与强制拦截解耦

EOF

Co-authored-by: Cursor <cursoragent@cursor.com>

jituan/services/club_migrate.py

@@ -925,8 +925,8 @@ def gate_for_user(*, club_id: str, user_uid: str, roles: Optional[List[str]] = N
     if roles:
         role_hit = any(r in force_roles for r in roles)
     has_assets = user_has_migratable_assets(plan, user_uid)
-    # 强制：仍要有可迁资产（空资产别拦死首页）
-    # 入口：只要还有剩余次数就展示（含二次名额），不必依赖第一次强制拦截
+    # 关后台「启用」→ find_active 找不到计划 → 上面已全 false，前端零感知
+    # 开「启用」：源店可展示入口；「强制拦截」只控制是否自动跳，两者独立
     force = bool(plan.force_intercept and role_hit and not done and has_assets)
     show_entry = bool(not done)
     return {
@@ -940,6 +940,7 @@ def gate_for_user(*, club_id: str, user_uid: str, roles: Optional[List[str]] = N
         'from_club_id': plan.from_club_id,
         'to_club_id': plan.to_club_id,
         'force_roles': force_roles,
+        'force_intercept': bool(plan.force_intercept),
         'success_count': success_count(plan.plan_id, user_uid),
         'max_allowed': max_allowed_success(plan, user_uid),
         'is_target': False,