diff --git a/backend/plugins/domain/admin/handler/auth_source.go b/backend/plugins/domain/admin/handler/auth_source.go
index 27eadc46..71fd7a64 100644
--- a/backend/plugins/domain/admin/handler/auth_source.go
+++ b/backend/plugins/domain/admin/handler/auth_source.go
@@ -14,7 +14,17 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-// ListAuthSources lists all configured authentication sources.
+// ListAuthSources 获取认证源列表
+// @Summary 获取认证源列表
+// @Description 返回所有已配置的 OAuth/OIDC 认证源列表，包括已启用和未启用的，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "认证源列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/auth-sources [get]
 func ListAuthSources(c *gin.Context) {
 	views, err := service.ListAuthSources(c.Request.Context())
 	if err != nil {
@@ -25,7 +35,19 @@ func ListAuthSources(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(views))
 }
 
-// CreateAuthSource creates a new authentication source.
+// CreateAuthSource 创建认证源
+// @Summary 创建认证源
+// @Description 创建一个新的 OAuth/OIDC 认证源配置，认证源名称必须唯一且符合命名规范，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body contracts.AuthSourceDTO true "创建认证源参数"
+// @Success 200 {object} response.Any "创建成功，返回认证源信息"
+// @Failure 400 {object} response.Any "参数错误或验证失败"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/auth-sources [post]
 func CreateAuthSource(c *gin.Context) {
 	var source contracts.AuthSourceDTO
 	if err := c.ShouldBindJSON(&source); err != nil {
@@ -42,7 +64,21 @@ func CreateAuthSource(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(created))
 }
 
-// UpdateAuthSource updates an authentication source.
+// UpdateAuthSource 更新认证源
+// @Summary 更新认证源
+// @Description 更新指定 ID 的认证源配置。若 client_secret 字段为空，则保留原有密钥不变，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path uint64 true "认证源 ID 或名称"
+// @Param request body contracts.AuthSourceDTO true "更新认证源参数"
+// @Success 200 {object} response.Any "更新成功，返回更新后的认证源信息"
+// @Failure 400 {object} response.Any "参数错误或验证失败"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/auth-sources/{id} [put]
 func UpdateAuthSource(c *gin.Context) {
 	id, ok := parseAuthSourceID(c)
 	if !ok {
@@ -64,7 +100,19 @@ func UpdateAuthSource(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(updated))
 }
 
-// ToggleAuthSource toggles the active state of an auth source.
+// ToggleAuthSource 切换认证源启用状态
+// @Summary 切换认证源启用状态
+// @Description 启用或禁用指定认证源。尝试启用时将验证 Client ID 和 Client Secret 是否已配置，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path uint64 true "认证源 ID 或名称"
+// @Success 200 {object} response.Any{data=string} "切换成功"
+// @Failure 400 {object} response.Any "验证失败或认证源不存在"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/auth-sources/{id}/toggle [put]
 func ToggleAuthSource(c *gin.Context) {
 	id, ok := parseAuthSourceID(c)
 	if !ok {
@@ -80,7 +128,18 @@ func ToggleAuthSource(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(gin.H{"is_active": toggled.IsActive}))
 }
 
-// DeleteAuthSource deletes an authentication source.
+// DeleteAuthSource 删除认证源
+// @Summary 删除认证源
+// @Description 删除指定认证源及其关联的所有外部帐号绑定记录，警告：删除后相关用户将无法通过该源登录，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param id path uint64 true "认证源 ID 或名称"
+// @Success 200 {object} response.Any{data=string} "删除成功"
+// @Failure 400 {object} response.Any "ID 无效或删除失败"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/auth-sources/{id} [delete]
 func DeleteAuthSource(c *gin.Context) {
 	id, ok := parseAuthSourceID(c)
 	if !ok {
diff --git a/backend/plugins/domain/auth/handlers.go b/backend/plugins/domain/auth/handlers.go
index c7a8f2a4..d96fe321 100644
--- a/backend/plugins/domain/auth/handlers.go
+++ b/backend/plugins/domain/auth/handlers.go
@@ -25,11 +25,26 @@ import (
 )
 
 // GetLoginSources 获取可用登录源列表
+// @Summary 获取可用登录源
+// @Description 返回当前系统已启用的所有 OAuth 登录源，前端展示登录按钮列表时调用
+// @Tags oauth
+// @Produce json
+// @Success 200 {object} response.Any{data=[]auth.AuthSourceView} "登录源列表"
+// @Router /api/v1/oauth/sources [get]
 func GetLoginSources(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(activeLoginSources(c.Request.Context())))
 }
 
 // GetLoginURL 获取登录授权地址
+// @Summary 获取登录授权地址
+// @Description 根据指定认证源生成 OAuth 授权 URL，前端跳转到该 URL 完成 OAuth 登录授权。source 参数为空时使用第一个启用的认证源。
+// @Tags oauth
+// @Produce json
+// @Param source query string false "认证源名称，为空使用第一个启用的认证源"
+// @Success 200 {object} response.Any{data=auth.OAuthAuthorizeResponse} "授权 URL"
+// @Failure 400 {object} response.Any "认证源不存在或未配置"
+// @Failure 500 {object} response.Any "构造 URL 失败"
+// @Router /api/v1/oauth/login [get]
 func GetLoginURL(c *gin.Context) {
 	ctx := c.Request.Context()
 	if !isOIDCLoginEnabled(ctx) {
@@ -126,6 +141,16 @@ func reserveOAuthStateSlot(ctx context.Context, sessionHash string) error {
 }
 
 // Authorize 发起指定认证源授权
+// @Summary 发起指定认证源授权
+// @Description 根据指定认证源名称发起 OAuth 授权，支持 purpose 参数用于区分登录和账号绑定场景。认证源必须已启用。
+// @Tags oauth
+// @Produce json
+// @Param source path string true "认证源名称"
+// @Param purpose query string false "授权目的：login（登录）或 bind（绑定账号），默认 login"
+// @Success 200 {object} response.Any{data=auth.OAuthAuthorizeResponse} "授权 URL"
+// @Failure 400 {object} response.Any "认证源不存在或未启用"
+// @Failure 500 {object} response.Any "构造 URL 失败"
+// @Router /api/v1/oauth/{source}/authorize [get]
 func Authorize(c *gin.Context) {
 	ctx := c.Request.Context()
 	if !isOIDCLoginEnabled(ctx) {
@@ -197,6 +222,17 @@ func Authorize(c *gin.Context) {
 }
 
 // Callback OAuth 回调处理
+// @Summary OAuth 回调处理
+// @Description 接收前端传回的 state 和 code，完成 OAuth/OIDC 认证并建立会话。支持登录（login）和账号绑定（bind）两种场景。
+// @Tags oauth
+// @Accept json
+// @Produce json
+// @Param request body auth.CallbackRequest true "回调请求参数"
+// @Success 200 {object} response.Any{data=auth.OAuthCallbackResult} "登录或绑定成功"
+// @Failure 400 {object} response.Any "state 无效、参数错误或认证源错误"
+// @Failure 401 {object} response.Any "绑定场景未登录"
+// @Failure 500 {object} response.Any "OAuth 认证失败或内部错误"
+// @Router /api/v1/oauth/callback [post]
 func Callback(c *gin.Context) {
 	var req CallbackRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
@@ -437,6 +473,15 @@ func handleCallbackRegister(ctx context.Context, c *gin.Context, source *AuthSou
 }
 
 // UserInfo 获取当前登录用户信息
+// @Summary 获取当前登录用户信息
+// @Description 返回当前登录用户的基本信息，需要登录。
+// @Tags oauth
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=auth.BasicUserInfo} "用户信息"
+// @Failure 401 {object} response.Any "未登录"
+// @Router /api/v1/oauth/user-info [get]
+// @Router /api/v1/user-info [get]
 func UserInfo(c *gin.Context) {
 	user, _ := ginutil.GetFromContext[*contracts.UserDTO](c, contracts.AuthUserObjKey)
 	session := sessions.Default(c)
@@ -449,6 +494,14 @@ func UserInfo(c *gin.Context) {
 }
 
 // Logout 退出登录
+// @Summary 退出登录
+// @Description 清除当前用户的登录会话，完成退出。清除 Cookie 中的 Session 数据。
+// @Tags oauth
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=string} "退出成功"
+// @Failure 500 {object} response.Any "Session 清除失败"
+// @Router /api/v1/oauth/logout [get]
 func Logout(c *gin.Context) {
 	session := sessions.Default(c)
 	userID := session.Get(UserIDKey)
@@ -469,6 +522,15 @@ func Logout(c *gin.Context) {
 }
 
 // ListExternalAccounts 获取当前用户的外部帐号绑定列表
+// @Summary 获取外部帐号列表
+// @Description 返回当前登录用户已绑定的所有外部 OAuth 帐号信息，需要登录
+// @Tags oauth
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "外部帐号列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/oauth/external-accounts [get]
 func ListExternalAccounts(c *gin.Context) {
 	userID := GetUserIDFromContext(c)
 	accounts, err := ListExternalAccountsByUserID(c.Request.Context(), userID)
@@ -480,6 +542,16 @@ func ListExternalAccounts(c *gin.Context) {
 }
 
 // DeleteExternalAccount 解除外部帐号绑定
+// @Summary 解除外部帐号绑定
+// @Description 解除当前登录用户与指定外部帐号的绑定关系，需要登录
+// @Tags oauth
+// @Produce json
+// @Security SessionCookie
+// @Param id path uint64 true "外部帐号绑定记录 ID"
+// @Success 200 {object} response.Any{data=string} "解除绑定成功"
+// @Failure 400 {object} response.Any "ID 无效或解除失败"
+// @Failure 401 {object} response.Any "未登录"
+// @Router /api/v1/oauth/external-accounts/{id}/delete [post]
 func DeleteExternalAccount(c *gin.Context) {
 	userID := GetUserIDFromContext(c)
 	if userID == 0 {
diff --git a/backend/plugins/domain/message_gateway/handler/push_channel.go b/backend/plugins/domain/message_gateway/handler/push_channel.go
index cdfe0c8f..c3c07a72 100644
--- a/backend/plugins/domain/message_gateway/handler/push_channel.go
+++ b/backend/plugins/domain/message_gateway/handler/push_channel.go
@@ -15,12 +15,26 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-// ListPushChannelDefinitions returns channel definitions.
+// ListPushChannelDefinitions 获取各种消息通道的表单配置定义列表
+// @Summary 获取所有消息通道配置字段定义
+// @Description 返回系统支持的所有消息通道类型的动态表单定义，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "通道配置定义列表"
+// @Router /api/v1/admin/push/channels/definitions [get]
 func ListPushChannelDefinitions(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(model.ListPushDefinitions()))
 }
 
-// ListPushChannels lists configured push channels.
+// ListPushChannels 获取消息通道列表
+// @Summary 获取所有消息通道
+// @Description 返回系统配置的所有消息通道列表，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]model.PushChannel} "消息通道列表"
+// @Router /api/v1/admin/push/channels [get]
 func ListPushChannels(c *gin.Context) {
 	channels, err := service.ListPushChannels(c.Request.Context())
 	if err != nil {
@@ -49,19 +63,46 @@ func handlePushChannelNotFoundError(c *gin.Context, err error, fallback func(c *
 	fallback(c, err.Error())
 }
 
-// CreatePushChannel creates a push channel.
+// CreatePushChannel 创建消息通道
+// @Summary 创建消息通道
+// @Description 新建一个消息通道配置，需要管理员权限
+// @Tags admin-push
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body model.CreatePushChannelRequest true "创建参数"
+// @Success 200 {object} response.Any{data=model.PushChannel} "创建成功"
+// @Router /api/v1/admin/push/channels [post]
 func CreatePushChannel(c *gin.Context) {
 	handleJSONRequest(c, service.CreatePushChannel)
 }
 
-// UpdatePushChannel updates a push channel.
+// UpdatePushChannel 更新消息通道
+// @Summary 更新消息通道
+// @Description 修改消息通道配置，需要管理员权限
+// @Tags admin-push
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path uint64 true "通道ID"
+// @Param request body model.UpdatePushChannelRequest true "更新参数"
+// @Success 200 {object} response.Any{data=model.PushChannel} "更新成功"
+// @Router /api/v1/admin/push/channels/{id} [put]
 func UpdatePushChannel(c *gin.Context) {
 	handleEntityUpdate(c, parsePushChannelID, service.UpdatePushChannel, func(c *gin.Context, err error) {
 		handlePushChannelNotFoundError(c, err, response.AbortInternal)
 	})
 }
 
-// DeletePushChannel deletes a push channel.
+// DeletePushChannel 删除消息通道
+// @Summary 删除消息通道
+// @Description 根据ID删除消息通道，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Param id path uint64 true "通道ID"
+// @Success 200 {object} response.Any "删除成功"
+// @Router /api/v1/admin/push/channels/{id} [delete]
 func DeletePushChannel(c *gin.Context) {
 	id, ok := parsePushChannelID(c)
 	if !ok {
@@ -75,7 +116,16 @@ func DeletePushChannel(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OKNil())
 }
 
-// TestPushChannel tests connectivity of a push channel.
+// TestPushChannel 测试通道连通性
+// @Summary 测试通道连通性
+// @Description 触发一次临时的或现有的通道连通性推送测试，需要管理员权限
+// @Tags admin-push
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body model.TestPushChannelRequest true "测试参数"
+// @Success 200 {object} response.Any "测试触发成功"
+// @Router /api/v1/admin/push/channels/test [post]
 func TestPushChannel(c *gin.Context) {
 	var req model.TestPushChannelRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
diff --git a/backend/plugins/domain/message_gateway/handler/push_event.go b/backend/plugins/domain/message_gateway/handler/push_event.go
index d7a6213b..04c6e717 100644
--- a/backend/plugins/domain/message_gateway/handler/push_event.go
+++ b/backend/plugins/domain/message_gateway/handler/push_event.go
@@ -15,7 +15,14 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-// ListPushEvents lists configured push events.
+// ListPushEvents 获取通知事件列表
+// @Summary 获取所有通知事件
+// @Description 返回系统配置的通知事件列表，包括预置和自定义事件，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]model.PushEvent} "通知事件列表"
+// @Router /api/v1/admin/push/events [get]
 func ListPushEvents(c *gin.Context) {
 	ctx := c.Request.Context()
 	events, err := service.ListPushEvents(ctx)
@@ -26,7 +33,14 @@ func ListPushEvents(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(events))
 }
 
-// ListBuiltInPushEvents lists system built-in push event definitions.
+// ListBuiltInPushEvents 获取内置通知事件列表
+// @Summary 获取所有内置通知事件
+// @Description 返回系统定义的所有内置通知事件元数据，供前端下拉框选择，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "内置通知事件列表"
+// @Router /api/v1/admin/push/events/builtin [get]
 func ListBuiltInPushEvents(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(service.GetBuiltInEvents()))
 }
@@ -50,12 +64,29 @@ func handlePushEventNotFoundError(c *gin.Context, err error, fallback func(c *gi
 	fallback(c, err.Error())
 }
 
-// CreatePushEvent creates a new push event configuration.
+// CreatePushEvent 创建通知事件
+// @Summary 创建通知事件
+// @Description 绑定系统内置事件或异步任务、推送渠道、接收目标并创建通知事件配置，需要管理员权限
+// @Tags admin-push
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body model.CreatePushEventRequest true "创建参数"
+// @Success 200 {object} response.Any{data=model.PushEvent} "创建成功"
+// @Router /api/v1/admin/push/events [post]
 func CreatePushEvent(c *gin.Context) {
 	handleJSONRequest(c, service.CreatePushEvent)
 }
 
-// DeletePushEvent deletes a push event configuration by ID.
+// DeletePushEvent 删除通知事件配置
+// @Summary 删除通知事件配置
+// @Description 删除数据库中的特定通知事件配置，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "事件 ID"
+// @Success 200 {object} response.Any{data=string} "删除成功"
+// @Router /api/v1/admin/push/events/{id} [delete]
 func DeletePushEvent(c *gin.Context) {
 	id, ok := parsePushEventID(c)
 	if !ok {
@@ -69,7 +100,17 @@ func DeletePushEvent(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OKNil())
 }
 
-// UpdatePushEvent updates an existing push event.
+// UpdatePushEvent 更新通知事件
+// @Summary 更新通知事件
+// @Description 更新已有通知事件的推送渠道、接收目标和内容模板，需要管理员权限
+// @Tags admin-push
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "事件 ID"
+// @Param request body model.UpdatePushEventRequest true "更新参数"
+// @Success 200 {object} response.Any{data=string} "修改成功"
+// @Router /api/v1/admin/push/events/{id} [put]
 func UpdatePushEvent(c *gin.Context) {
 	id, ok := parsePushEventID(c)
 	if !ok {
@@ -89,7 +130,15 @@ func UpdatePushEvent(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OKNil())
 }
 
-// TogglePushEvent toggles the enabled state of a push event.
+// TogglePushEvent 快捷切换通知事件启用状态
+// @Summary 快捷切换通知事件启用状态
+// @Description 启用或禁用指定的通知事件
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "事件 ID"
+// @Success 200 {object} response.Any{data=string} "切换成功"
+// @Router /api/v1/admin/push/events/{id}/toggle [post]
 func TogglePushEvent(c *gin.Context) {
 	id, ok := parsePushEventID(c)
 	if !ok {
@@ -104,7 +153,18 @@ func TogglePushEvent(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(enabled))
 }
 
-// ListPushHistories returns paginated push notification delivery histories.
+// ListPushHistories 分页获取通知推送历史
+// @Summary 分页获取通知推送历史
+// @Description 返回分页的通知历史日志数据，需要管理员权限
+// @Tags admin-push
+// @Produce json
+// @Security SessionCookie
+// @Param page query int false "当前页码"
+// @Param page_size query int false "分页大小"
+// @Param event_key query string false "过滤事件名称"
+// @Param status query string false "过滤发送状态"
+// @Success 200 {object} response.Any "推送历史列表"
+// @Router /api/v1/admin/push/histories [get]
 func ListPushHistories(c *gin.Context) {
 	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
 	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
@@ -132,7 +192,16 @@ func ListPushHistories(c *gin.Context) {
 	}))
 }
 
-// TestPush executes a synchronous push test using the specified config.
+// TestPush 测试推送通道发送
+// @Summary 测试推送通道发送
+// @Description 接收临时通知渠道配置并在本地同步调用 Pusher.Send 发送测试消息
+// @Tags admin-push
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body model.TestPushRequest true "测试请求体"
+// @Success 200 {object} response.Any{data=string} "测试成功"
+// @Router /api/v1/admin/push/test [post]
 func TestPush(c *gin.Context) {
 	var req model.TestPushRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
diff --git a/backend/plugins/domain/system/plugin.go b/backend/plugins/domain/system/plugin.go
index 5e636967..71763b86 100644
--- a/backend/plugins/domain/system/plugin.go
+++ b/backend/plugins/domain/system/plugin.go
@@ -56,9 +56,7 @@ func (p *Plugin) Apply(ctx *core.Context) error {
 	ctx.Router().GET("/api/healthz", func(c *gin.Context) {
 		c.JSON(http.StatusOK, gin.H{"status": "ok"})
 	})
-	ctx.Router().GET("/api/health", func(c *gin.Context) {
-		c.JSON(http.StatusOK, response.OKNil())
-	})
+	ctx.Router().GET("/api/health", Health)
 	ctx.Router().RegisterWhitelist("/api/health")
 
 	// 2. Public config
@@ -92,3 +90,14 @@ func (p *Plugin) Apply(ctx *core.Context) error {
 
 	return nil
 }
+
+// Health 健康检查
+// @Summary 健康检查
+// @Description 检查服务是否正常运行，可用于负载均衡存活探测
+// @Tags health
+// @Produce json
+// @Success 200 {object} response.Any{data=string} "服务正常"
+// @Router /api/health [get]
+func Health(c *gin.Context) {
+	c.JSON(http.StatusOK, response.OKNil())
+}
diff --git a/backend/plugins/domain/upload/handler/file_management.go b/backend/plugins/domain/upload/handler/file_management.go
index 69f9aecf..1666cb7d 100644
--- a/backend/plugins/domain/upload/handler/file_management.go
+++ b/backend/plugins/domain/upload/handler/file_management.go
@@ -50,6 +50,7 @@ type listFilesResponse struct {
 // @Security SessionCookie
 // @Success 200 {object} response.Any{data=listFilesResponse} "查询成功"
 // @Failure 400 {object} response.Any "参数错误"
+// @Router /api/v1/admin/uploads [get]
 // @Router /api/v1/admin/uploads/files [get]
 func ListFiles(c *gin.Context) {
 	ctx := c.Request.Context()
@@ -96,6 +97,7 @@ func ListFiles(c *gin.Context) {
 // @Security SessionCookie
 // @Success 200 {object} response.Any "删除成功"
 // @Failure 404 {object} response.Any "文件不存在"
+// @Router /api/v1/admin/uploads/{id} [delete]
 // @Router /api/v1/admin/uploads/files/{id} [delete]
 func DeleteFile(c *gin.Context) {
 	ctx := c.Request.Context()
diff --git a/backend/plugins/domain/user/handlers.go b/backend/plugins/domain/user/handlers.go
index 198f9431..8ddea90b 100644
--- a/backend/plugins/domain/user/handlers.go
+++ b/backend/plugins/domain/user/handlers.go
@@ -77,7 +77,17 @@ func invalidateTokenCache(ctx context.Context, tokenHash string) {
 	}
 }
 
-// Login handles username and password authentication.
+// Login 用户密码登录
+// @Summary 用户密码登录
+// @Description 使用用户名和密码登录，登录成功后建立 Session。若管理员已关闭密码登录功能则返回错误。
+// @Tags user
+// @Accept json
+// @Produce json
+// @Param request body user.loginRequest true "登录请求参数"
+// @Success 200 {object} response.Any "登录成功，返回用户信息"
+// @Failure 400 {object} response.Any "用户名或密码错误"
+// @Failure 500 {object} response.Any "服务内部错误"
+// @Router /api/v1/user/login [post]
 func Login(c *gin.Context) {
 	var req loginRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
@@ -109,7 +119,17 @@ func Login(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(user))
 }
 
-// Register registers a new user.
+// Register 用户注册
+// @Summary 用户注册
+// @Description 使用用户名和密码注册新账号，注册成功后自动登录并建立 Session。
+// @Tags user
+// @Accept json
+// @Produce json
+// @Param request body user.registerRequest true "注册请求参数"
+// @Success 200 {object} response.Any "注册并登录成功，返回用户信息"
+// @Failure 400 {object} response.Any "参数错误、用户名已存在或注册已关闭"
+// @Failure 500 {object} response.Any "服务内部错误"
+// @Router /api/v1/user/register [post]
 func Register(c *gin.Context) {
 	var req registerRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
@@ -142,7 +162,15 @@ func Register(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(newUser))
 }
 
-// Logout logs out the current session.
+// Logout 用户退出登录
+// @Summary 用户退出登录
+// @Description 清除用户登录 Session，完成退出
+// @Tags user
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=string} "退出成功"
+// @Failure 500 {object} response.Any "Session 清除失败"
+// @Router /api/v1/user/logout [get]
 func Logout(c *gin.Context) {
 	sess := sessions.Default(c)
 	sess.Options(sessions.Options{
@@ -156,12 +184,30 @@ func Logout(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OKNil())
 }
 
-// SendEmailCode sends an email verification code.
+// SendEmailCode 发送邮箱验证码
+// @Summary 发送邮箱验证码
+// @Description 向指定邮箱发送验证码（用于注册场景）
+// @Tags user
+// @Accept json
+// @Produce json
+// @Success 200 {object} response.Any "发送成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Router /api/v1/user/send-email-code [post]
 func SendEmailCode(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(gin.H{"sent": true}))
 }
 
-// ChangePassword changes the current user password.
+// ChangePassword 修改用户密码
+// @Summary 修改用户密码
+// @Description 修改当前登录用户的密码。
+// @Tags user
+// @Accept json
+// @Produce json
+// @Param request body user.changePasswordRequest true "修改密码请求参数"
+// @Success 200 {object} response.Any{data=string} "修改密码成功"
+// @Failure 400 {object} response.Any "原密码错误或新密码不符合要求"
+// @Failure 401 {object} response.Any "请先登录"
+// @Router /api/v1/user/change-password [post]
 func ChangePassword(c *gin.Context) {
 	var req changePasswordRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
@@ -200,7 +246,15 @@ func ChangePassword(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OKNil())
 }
 
-// Self returns the current authenticated user.
+// Self 获取当前登录用户信息
+// @Summary 获取当前登录用户信息
+// @Description 返回当前登录用户的基本信息，需要登录。
+// @Tags user
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "用户信息"
+// @Failure 401 {object} response.Any "未登录"
+// @Router /api/v1/user/self [get]
 func Self(c *gin.Context) {
 	svc := getAuthService()
 	if svc == nil {
@@ -216,7 +270,17 @@ func Self(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(user))
 }
 
-// UpdateProfile updates profile info.
+// UpdateProfile 修改当前登录用户的个人资料
+// @Summary 修改当前登录用户的个人资料
+// @Description 修改当前登录用户的昵称、头像、简介、电话、性别、个人网站和所在地。
+// @Tags user
+// @Accept json
+// @Produce json
+// @Param request body user.updateProfileRequest true "更新请求参数"
+// @Success 200 {object} response.Any "修改成功，返回更新后的用户信息"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Router /api/v1/user/profile [put]
 func UpdateProfile(c *gin.Context) {
 	var req updateProfileRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
@@ -247,7 +311,15 @@ func UpdateProfile(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OK(user))
 }
 
-// ListAccessTokens lists access tokens for the current user.
+// ListAccessTokens 获取当前用户的 AccessToken 列表
+// @Summary 获取当前用户的 AccessToken 列表
+// @Description 返回当前登录用户的所有 active access tokens（脱敏后）
+// @Tags user
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]user.AccessToken} "令牌列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Router /api/v1/user/access-tokens [get]
 func ListAccessTokens(c *gin.Context) {
 	userID := getUserIDFromSession(c)
 	tokens, err := listAccessTokensByUser(c.Request.Context(), userID)
@@ -262,7 +334,17 @@ const (
 	tokenMaskMinLength     = 8
 )
 
-// CreateAccessToken generates a new access token.
+// CreateAccessToken 创建一个新的 AccessToken
+// @Summary 创建一个新的 AccessToken
+// @Description 为当前用户新建一个 API 访问令牌，仅在此接口返回一次明文令牌值，请妥善保存。
+// @Tags user
+// @Accept json
+// @Produce json
+// @Param request body user.createAccessTokenRequest true "令牌名称"
+// @Security SessionCookie
+// @Success 200 {object} response.Any "新建令牌成功"
+// @Failure 400 {object} response.Any "参数错误或超限"
+// @Router /api/v1/user/access-tokens [post]
 func CreateAccessToken(c *gin.Context) {
 	var req createAccessTokenRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
@@ -301,7 +383,16 @@ func CreateAccessToken(c *gin.Context) {
 	}))
 }
 
-// DeleteAccessToken deletes a specific access token.
+// DeleteAccessToken 删除一个 AccessToken
+// @Summary 删除一个 AccessToken
+// @Description 撤销并删除一个属于当前用户的 API 访问令牌
+// @Tags user
+// @Produce json
+// @Param id path string true "令牌ID"
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=string} "删除成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Router /api/v1/user/access-tokens/{id} [delete]
 func DeleteAccessToken(c *gin.Context) {
 	idStr := c.Param("id")
 	id, err := strconv.ParseUint(idStr, 10, 64)
@@ -324,7 +415,16 @@ func DeleteAccessToken(c *gin.Context) {
 	c.JSON(http.StatusOK, response.OKNil())
 }
 
-// RotateAccessToken rotates an access token value.
+// RotateAccessToken 轮换一个 AccessToken
+// @Summary 轮换一个 AccessToken
+// @Description 轮换（重新生成）一个属于当前用户的 API 访问令牌的密钥，旧令牌将立即失效
+// @Tags user
+// @Produce json
+// @Param id path string true "令牌ID"
+// @Security SessionCookie
+// @Success 200 {object} response.Any "令牌轮换成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Router /api/v1/user/access-tokens/{id}/rotate [post]
 func RotateAccessToken(c *gin.Context) {
 	idStr := c.Param("id")
 	id, err := strconv.ParseUint(idStr, 10, 64)