yuansiwei/DEV-MERGE-LEGACY-BACKEND-2026: 合并finance和marking-v3 @ 541f2e2784f522c066f3933fbbf386c61844aeeb

Q 2404d5c493 feat(identity): T4-4 /auth/* 端点 handler（两步登录 + me/refresh/logout + 微信占位）		4 өдөр өмнө
..
auth_service.go	2404d5c493 feat(identity): T4-4 /auth/* 端点 handler（两步登录 + me/refresh/logout + 微信占位）	4 өдөр өмнө
auth_service_test.go	9d74dac806 feat(identity): T4-3 AuthService 两步登录 + Redis 票据 + 惰性升级	4 өдөр өмнө
auth_service_test_helpers.go	9d74dac806 feat(identity): T4-3 AuthService 两步登录 + Redis 票据 + 惰性升级	4 өдөр өмнө