diff --git a/internal/handler/chat_uploads.go b/internal/handler/chat_uploads.go
index d8e4bd20..dea41625 100644
--- a/internal/handler/chat_uploads.go
+++ b/internal/handler/chat_uploads.go
@@ -1,13 +1,17 @@
 package handler
 
 import (
+	"archive/zip"
 	"crypto/rand"
+	"encoding/json"
 	"fmt"
 	"io"
+	"mime"
 	"net/http"
 	"os"
 	"path/filepath"
 	"sort"
+	"strconv"
 	"strings"
 	"time"
 	"unicode/utf8"
@@ -21,8 +25,15 @@ import (
 )
 
 const (
-	chatUploadsRootDirName = "chat_uploads"
-	maxChatUploadEditBytes = 2 * 1024 * 1024 // 文本编辑上限
+	chatUploadsRootDirName       = "chat_uploads"
+	reductionRootDirName         = "tmp/reduction"
+	artifactsRootDirName         = "data/conversation_artifacts"
+	reductionVirtualPrefix       = "__reduction__/"
+	artifactVirtualPrefix        = "__conversation_artifact__/"
+	chatUploadSourceUpload       = "upload"
+	chatUploadSourceReduction    = "reduction"
+	chatUploadSourceConversation = "conversation_artifact"
+	maxChatUploadEditBytes       = 2 * 1024 * 1024 // 文本编辑上限
 )
 
 // ChatUploadsHandler 对话中上传附件（chat_uploads 目录）的管理 API
@@ -66,6 +77,64 @@ func (h *ChatUploadsHandler) pathAllowed(c *gin.Context, relativePath string) bo
 	return h.db.UserCanAccessResource(session.UserID, session.Scope, "conversation", parts[1])
 }
 
+func (h *ChatUploadsHandler) reductionPathAllowed(c *gin.Context, scope, id string) bool {
+	session, ok := security.CurrentSession(c)
+	if !ok || h.db == nil {
+		return false
+	}
+	if session.Scope == database.RBACScopeAll {
+		return true
+	}
+	id = strings.TrimSpace(id)
+	switch scope {
+	case "conversations":
+		if id == "" || id == "default" {
+			return false
+		}
+		return h.db.UserCanAccessResource(session.UserID, session.Scope, "conversation", id)
+	case "projects":
+		if id == "" {
+			return false
+		}
+		return h.db.UserCanAccessResource(session.UserID, session.Scope, "project", id)
+	default:
+		return false
+	}
+}
+
+func (h *ChatUploadsHandler) reductionVirtualPathAllowed(c *gin.Context, relativePath string) bool {
+	rel := strings.TrimPrefix(strings.TrimSpace(relativePath), reductionVirtualPrefix)
+	parts := strings.Split(filepath.ToSlash(rel), "/")
+	if len(parts) < 2 {
+		return false
+	}
+	return h.reductionPathAllowed(c, parts[0], parts[1])
+}
+
+func (h *ChatUploadsHandler) conversationArtifactPathAllowed(c *gin.Context, conversationID string) bool {
+	session, ok := security.CurrentSession(c)
+	if !ok || h.db == nil {
+		return false
+	}
+	if session.Scope == database.RBACScopeAll {
+		return true
+	}
+	conversationID = strings.TrimSpace(conversationID)
+	if conversationID == "" || conversationID == "default" {
+		return false
+	}
+	return h.db.UserCanAccessResource(session.UserID, session.Scope, "conversation", conversationID)
+}
+
+func (h *ChatUploadsHandler) conversationArtifactVirtualPathAllowed(c *gin.Context, relativePath string) bool {
+	rel := strings.TrimPrefix(strings.TrimSpace(relativePath), artifactVirtualPrefix)
+	parts := strings.Split(filepath.ToSlash(rel), "/")
+	if len(parts) < 1 {
+		return false
+	}
+	return h.conversationArtifactPathAllowed(c, parts[0])
+}
+
 func (h *ChatUploadsHandler) absRoot() (string, error) {
 	cwd, err := os.Getwd()
 	if err != nil {
@@ -74,6 +143,46 @@ func (h *ChatUploadsHandler) absRoot() (string, error) {
 	return filepath.Abs(filepath.Join(cwd, chatUploadsRootDirName))
 }
 
+func (h *ChatUploadsHandler) absReductionRoot() (string, error) {
+	if h.db != nil {
+		if base := strings.TrimSpace(h.db.EinoReductionBaseDir()); base != "" {
+			if filepath.IsAbs(base) {
+				return filepath.Abs(base)
+			}
+			cwd, err := os.Getwd()
+			if err != nil {
+				return "", err
+			}
+			return filepath.Abs(filepath.Join(cwd, base))
+		}
+	}
+	cwd, err := os.Getwd()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Abs(filepath.Join(cwd, reductionRootDirName))
+}
+
+func (h *ChatUploadsHandler) absConversationArtifactsRoot() (string, error) {
+	if h.db != nil {
+		if base := strings.TrimSpace(h.db.ConversationArtifactsBaseDir()); base != "" {
+			if filepath.IsAbs(base) {
+				return filepath.Abs(base)
+			}
+			cwd, err := os.Getwd()
+			if err != nil {
+				return "", err
+			}
+			return filepath.Abs(filepath.Join(cwd, base))
+		}
+	}
+	cwd, err := os.Getwd()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Abs(filepath.Join(cwd, artifactsRootDirName))
+}
+
 // resolveUnderChatUploads 校验 relativePath（使用 / 分隔）对应文件必须在 chat_uploads 根下
 func (h *ChatUploadsHandler) resolveUnderChatUploads(relativePath string) (abs string, err error) {
 	root, err := h.absRoot()
@@ -105,30 +214,44 @@ type ChatUploadFileItem struct {
 	RelativePath   string `json:"relativePath"`
 	AbsolutePath   string `json:"absolutePath"` // 服务器上的绝对路径，便于在对话中引用（与附件落盘路径一致）
 	Name           string `json:"name"`
+	Source         string `json:"source,omitempty"`
 	Size           int64  `json:"size"`
 	ModifiedUnix   int64  `json:"modifiedUnix"`
 	Date           string `json:"date"`
 	ConversationID string `json:"conversationId"`
+	ProjectID      string `json:"projectId,omitempty"`
 	// SubPath 为日期、会话目录之下的子路径（不含文件名），如 date/conv/a/b/file 则为 "a/b"；无嵌套则为 ""。
 	SubPath string `json:"subPath"`
 }
 
-// List GET /api/chat-uploads
-func (h *ChatUploadsHandler) List(c *gin.Context) {
-	conversationFilter := strings.TrimSpace(c.Query("conversation"))
+func (h *ChatUploadsHandler) conversationProjectID(conversationID string, cache map[string]string) string {
+	conversationID = strings.TrimSpace(conversationID)
+	if conversationID == "" || conversationID == "_manual" || conversationID == "_new" || h.db == nil {
+		return ""
+	}
+	if v, ok := cache[conversationID]; ok {
+		return v
+	}
+	projectID, err := h.db.GetConversationProjectID(conversationID)
+	if err != nil {
+		projectID = ""
+	}
+	cache[conversationID] = projectID
+	return projectID
+}
+
+func (h *ChatUploadsHandler) collectFiles(c *gin.Context, conversationFilter, projectFilter string) ([]ChatUploadFileItem, []string, error) {
 	root, err := h.absRoot()
 	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
-		return
+		return nil, nil, err
 	}
 	// 保证根目录存在，否则「按文件夹」浏览时无法 mkdir，且首次列表为空时界面无路径工具栏
 	if err := os.MkdirAll(root, 0755); err != nil {
-		h.logger.Warn("创建 chat_uploads 根目录失败", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
-		return
+		return nil, nil, err
 	}
 	var files []ChatUploadFileItem
 	var folders []string
+	projectCache := make(map[string]string)
 	err = filepath.WalkDir(root, func(path string, d os.DirEntry, walkErr error) error {
 		if walkErr != nil {
 			return walkErr
@@ -157,6 +280,7 @@ func (h *ChatUploadsHandler) List(c *gin.Context) {
 		if len(parts) >= 3 {
 			convID = parts[1]
 		}
+		projectID := h.conversationProjectID(convID, projectCache)
 		var subPath string
 		if len(parts) >= 4 {
 			subPath = strings.Join(parts[2:len(parts)-1], "/")
@@ -164,29 +288,32 @@ func (h *ChatUploadsHandler) List(c *gin.Context) {
 		if conversationFilter != "" && convID != conversationFilter {
 			return nil
 		}
+		if projectFilter != "" && projectID != projectFilter {
+			return nil
+		}
 		absPath, _ := filepath.Abs(path)
 		files = append(files, ChatUploadFileItem{
 			RelativePath:   relSlash,
 			AbsolutePath:   absPath,
 			Name:           d.Name(),
+			Source:         chatUploadSourceUpload,
 			Size:           info.Size(),
 			ModifiedUnix:   info.ModTime().Unix(),
 			Date:           dateStr,
 			ConversationID: convID,
+			ProjectID:      projectID,
 			SubPath:        subPath,
 		})
 		return nil
 	})
 	if err != nil {
-		h.logger.Warn("列举对话附件失败", zap.Error(err))
-		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
-		return
+		return nil, nil, err
 	}
-	if conversationFilter != "" {
+	if conversationFilter != "" || projectFilter != "" {
 		filteredFolders := make([]string, 0, len(folders))
 		for _, rel := range folders {
 			parts := strings.Split(rel, "/")
-			if len(parts) >= 2 && parts[1] == conversationFilter {
+			if len(parts) >= 2 && (conversationFilter == "" || parts[1] == conversationFilter) && (projectFilter == "" || h.conversationProjectID(parts[1], projectCache) == projectFilter) {
 				filteredFolders = append(filteredFolders, rel)
 				continue
 			}
@@ -221,12 +348,480 @@ func (h *ChatUploadsHandler) List(c *gin.Context) {
 	sort.Slice(files, func(i, j int) bool {
 		return files[i].ModifiedUnix > files[j].ModifiedUnix
 	})
-	c.JSON(http.StatusOK, gin.H{"files": files, "folders": folders})
+	reductionFiles, err := h.collectReductionFiles(c, conversationFilter, projectFilter)
+	if err != nil {
+		h.logger.Warn("列举 reduction 产物失败", zap.Error(err))
+	} else if len(reductionFiles) > 0 {
+		files = append(files, reductionFiles...)
+	}
+	artifactFiles, err := h.collectConversationArtifactFiles(c, conversationFilter, projectFilter)
+	if err != nil {
+		h.logger.Warn("列举 conversation_artifacts 产物失败", zap.Error(err))
+	} else if len(artifactFiles) > 0 {
+		files = append(files, artifactFiles...)
+	}
+	sort.Slice(files, func(i, j int) bool {
+		return files[i].ModifiedUnix > files[j].ModifiedUnix
+	})
+	return files, folders, nil
+}
+
+func (h *ChatUploadsHandler) collectReductionFiles(c *gin.Context, conversationFilter, projectFilter string) ([]ChatUploadFileItem, error) {
+	root, err := h.absReductionRoot()
+	if err != nil {
+		return nil, err
+	}
+	if st, err := os.Stat(root); err != nil || !st.IsDir() {
+		return nil, nil
+	}
+	projectCache := make(map[string]string)
+	files := make([]ChatUploadFileItem, 0)
+	for _, scope := range []string{"conversations", "projects"} {
+		scopeRoot := filepath.Join(root, scope)
+		_ = filepath.WalkDir(scopeRoot, func(path string, d os.DirEntry, walkErr error) error {
+			if walkErr != nil || d == nil || d.IsDir() {
+				return nil
+			}
+			rel, err := filepath.Rel(root, path)
+			if err != nil {
+				return nil
+			}
+			relSlash := filepath.ToSlash(rel)
+			parts := strings.Split(relSlash, "/")
+			if len(parts) < 3 {
+				return nil
+			}
+			ownerID := parts[1]
+			if !h.reductionPathAllowed(c, scope, ownerID) {
+				return nil
+			}
+			var convID, projectID string
+			if scope == "conversations" {
+				convID = ownerID
+				projectID = h.conversationProjectID(convID, projectCache)
+			} else {
+				projectID = ownerID
+			}
+			if conversationFilter != "" && convID != conversationFilter {
+				return nil
+			}
+			if projectFilter != "" && projectID != projectFilter {
+				return nil
+			}
+			info, err := d.Info()
+			if err != nil {
+				return nil
+			}
+			name := d.Name()
+			if filepath.Ext(name) == "" {
+				name += ".txt"
+			}
+			abs, _ := filepath.Abs(path)
+			files = append(files, ChatUploadFileItem{
+				RelativePath:   reductionVirtualPrefix + relSlash,
+				AbsolutePath:   abs,
+				Name:           name,
+				Source:         chatUploadSourceReduction,
+				Size:           info.Size(),
+				ModifiedUnix:   info.ModTime().Unix(),
+				Date:           info.ModTime().Format("2006-01-02"),
+				ConversationID: convID,
+				ProjectID:      projectID,
+				SubPath:        strings.Join(parts[2:len(parts)-1], "/"),
+			})
+			return nil
+		})
+	}
+	return files, nil
+}
+
+func (h *ChatUploadsHandler) collectConversationArtifactFiles(c *gin.Context, conversationFilter, projectFilter string) ([]ChatUploadFileItem, error) {
+	root, err := h.absConversationArtifactsRoot()
+	if err != nil {
+		return nil, err
+	}
+	if st, err := os.Stat(root); err != nil || !st.IsDir() {
+		return nil, nil
+	}
+	projectCache := make(map[string]string)
+	files := make([]ChatUploadFileItem, 0)
+	_ = filepath.WalkDir(root, func(path string, d os.DirEntry, walkErr error) error {
+		if walkErr != nil || d == nil || d.IsDir() {
+			return nil
+		}
+		rel, err := filepath.Rel(root, path)
+		if err != nil {
+			return nil
+		}
+		relSlash := filepath.ToSlash(rel)
+		parts := strings.Split(relSlash, "/")
+		if len(parts) < 2 {
+			return nil
+		}
+		convID := parts[0]
+		if !h.conversationArtifactPathAllowed(c, convID) {
+			return nil
+		}
+		projectID := h.conversationProjectID(convID, projectCache)
+		if conversationFilter != "" && convID != conversationFilter {
+			return nil
+		}
+		if projectFilter != "" && projectID != projectFilter {
+			return nil
+		}
+		info, err := d.Info()
+		if err != nil {
+			return nil
+		}
+		name := d.Name()
+		if filepath.Ext(name) == "" {
+			name += ".txt"
+		}
+		abs, _ := filepath.Abs(path)
+		files = append(files, ChatUploadFileItem{
+			RelativePath:   artifactVirtualPrefix + relSlash,
+			AbsolutePath:   abs,
+			Name:           name,
+			Source:         chatUploadSourceConversation,
+			Size:           info.Size(),
+			ModifiedUnix:   info.ModTime().Unix(),
+			Date:           info.ModTime().Format("2006-01-02"),
+			ConversationID: convID,
+			ProjectID:      projectID,
+			SubPath:        strings.Join(parts[1:len(parts)-1], "/"),
+		})
+		return nil
+	})
+	return files, nil
+}
+
+func (h *ChatUploadsHandler) resolveReductionVirtualPath(relativePath string) (string, error) {
+	rel := strings.TrimPrefix(strings.TrimSpace(relativePath), reductionVirtualPrefix)
+	rel = filepath.Clean(filepath.FromSlash(rel))
+	if rel == "." || strings.HasPrefix(rel, "..") {
+		return "", fmt.Errorf("invalid path")
+	}
+	root, err := h.absReductionRoot()
+	if err != nil {
+		return "", err
+	}
+	full, err := filepath.Abs(filepath.Join(root, rel))
+	if err != nil {
+		return "", err
+	}
+	rootAbs, _ := filepath.Abs(root)
+	if full != rootAbs && !strings.HasPrefix(full, rootAbs+string(filepath.Separator)) {
+		return "", fmt.Errorf("path escapes reduction root")
+	}
+	return full, nil
+}
+
+func (h *ChatUploadsHandler) resolveConversationArtifactVirtualPath(relativePath string) (string, error) {
+	rel := strings.TrimPrefix(strings.TrimSpace(relativePath), artifactVirtualPrefix)
+	rel = filepath.Clean(filepath.FromSlash(rel))
+	if rel == "." || strings.HasPrefix(rel, "..") {
+		return "", fmt.Errorf("invalid path")
+	}
+	root, err := h.absConversationArtifactsRoot()
+	if err != nil {
+		return "", err
+	}
+	full, err := filepath.Abs(filepath.Join(root, rel))
+	if err != nil {
+		return "", err
+	}
+	rootAbs, _ := filepath.Abs(root)
+	if full != rootAbs && !strings.HasPrefix(full, rootAbs+string(filepath.Separator)) {
+		return "", fmt.Errorf("path escapes conversation artifacts root")
+	}
+	return full, nil
+}
+
+func chatUploadItemIsInternal(item ChatUploadFileItem) bool {
+	return item.Source == chatUploadSourceReduction ||
+		item.Source == chatUploadSourceConversation ||
+		strings.HasPrefix(item.RelativePath, reductionVirtualPrefix) ||
+		strings.HasPrefix(item.RelativePath, artifactVirtualPrefix)
+}
+
+func (h *ChatUploadsHandler) resolveListedFilePath(item ChatUploadFileItem) (string, error) {
+	switch {
+	case item.Source == chatUploadSourceReduction || strings.HasPrefix(item.RelativePath, reductionVirtualPrefix):
+		return h.resolveReductionVirtualPath(item.RelativePath)
+	case item.Source == chatUploadSourceConversation || strings.HasPrefix(item.RelativePath, artifactVirtualPrefix):
+		return h.resolveConversationArtifactVirtualPath(item.RelativePath)
+	default:
+		return h.resolveUnderChatUploads(item.RelativePath)
+	}
+}
+
+func chatUploadSourceMatches(item ChatUploadFileItem, sourceFilter string) bool {
+	sourceFilter = strings.TrimSpace(sourceFilter)
+	if sourceFilter == "" || sourceFilter == "all" {
+		return true
+	}
+	source := strings.TrimSpace(item.Source)
+	if source == "" {
+		source = chatUploadSourceUpload
+	}
+	return source == sourceFilter
+}
+
+func chatUploadSearchMatches(item ChatUploadFileItem, search string) bool {
+	search = strings.ToLower(strings.TrimSpace(search))
+	if search == "" {
+		return true
+	}
+	values := []string{
+		item.RelativePath,
+		item.Name,
+		item.Source,
+		item.Date,
+		item.ConversationID,
+		item.ProjectID,
+		item.SubPath,
+	}
+	for _, value := range values {
+		if strings.Contains(strings.ToLower(value), search) {
+			return true
+		}
+	}
+	return false
+}
+
+func filterChatUploadItems(files []ChatUploadFileItem, sourceFilter, search string) []ChatUploadFileItem {
+	if strings.TrimSpace(sourceFilter) == "" && strings.TrimSpace(search) == "" {
+		return files
+	}
+	out := make([]ChatUploadFileItem, 0, len(files))
+	for _, item := range files {
+		if chatUploadSourceMatches(item, sourceFilter) && chatUploadSearchMatches(item, search) {
+			out = append(out, item)
+		}
+	}
+	return out
+}
+
+func parsePositiveIntQuery(c *gin.Context, key string, def, max int) int {
+	raw := strings.TrimSpace(c.Query(key))
+	if raw == "" {
+		return def
+	}
+	if strings.EqualFold(raw, "all") {
+		return 0
+	}
+	n, err := strconv.Atoi(raw)
+	if err != nil || n <= 0 {
+		return def
+	}
+	if max > 0 && n > max {
+		return max
+	}
+	return n
+}
+
+func paginateChatUploadItems(files []ChatUploadFileItem, page, pageSize int) []ChatUploadFileItem {
+	if pageSize <= 0 {
+		return files
+	}
+	if page <= 0 {
+		page = 1
+	}
+	start := (page - 1) * pageSize
+	if start >= len(files) {
+		return []ChatUploadFileItem{}
+	}
+	end := start + pageSize
+	if end > len(files) {
+		end = len(files)
+	}
+	return files[start:end]
+}
+
+// List GET /api/chat-uploads
+func (h *ChatUploadsHandler) List(c *gin.Context) {
+	conversationFilter := strings.TrimSpace(c.Query("conversation"))
+	projectFilter := strings.TrimSpace(c.Query("project"))
+	sourceFilter := strings.TrimSpace(c.Query("source"))
+	search := strings.TrimSpace(c.Query("search"))
+	page := parsePositiveIntQuery(c, "page", 1, 0)
+	pageSize := parsePositiveIntQuery(c, "pageSize", 20, 200)
+	files, folders, err := h.collectFiles(c, conversationFilter, projectFilter)
+	if err != nil {
+		h.logger.Warn("列举对话附件失败", zap.Error(err))
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	files = filterChatUploadItems(files, sourceFilter, search)
+	total := len(files)
+	paged := paginateChatUploadItems(files, page, pageSize)
+	c.JSON(http.StatusOK, gin.H{
+		"files":    paged,
+		"folders":  folders,
+		"total":    total,
+		"page":     page,
+		"pageSize": pageSize,
+	})
+}
+
+// Export GET /api/chat-uploads/export?conversation=...&project=...
+func (h *ChatUploadsHandler) Export(c *gin.Context) {
+	conversationFilter := strings.TrimSpace(c.Query("conversation"))
+	projectFilter := strings.TrimSpace(c.Query("project"))
+	sourceFilter := strings.TrimSpace(c.Query("source"))
+	search := strings.TrimSpace(c.Query("search"))
+	files, _, err := h.collectFiles(c, conversationFilter, projectFilter)
+	if err != nil {
+		h.logger.Warn("导出对话附件失败", zap.Error(err))
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	files = filterChatUploadItems(files, sourceFilter, search)
+	if len(files) == 0 {
+		c.JSON(http.StatusNotFound, gin.H{"error": "no files to export"})
+		return
+	}
+	nameParts := []string{"chat-files"}
+	if projectFilter != "" {
+		nameParts = append(nameParts, "project-"+projectFilter)
+	}
+	if conversationFilter != "" {
+		nameParts = append(nameParts, "conversation-"+conversationFilter)
+	}
+	nameParts = append(nameParts, time.Now().Format("20060102-150405"))
+	filename := strings.Join(nameParts, "-") + ".zip"
+	c.Header("Content-Type", "application/zip")
+	c.Header("Content-Disposition", mime.FormatMediaType("attachment", map[string]string{"filename": filename}))
+
+	zw := zip.NewWriter(c.Writer)
+	defer zw.Close()
+
+	manifest := gin.H{
+		"exportedAt":      time.Now().UTC().Format(time.RFC3339),
+		"conversationId":  conversationFilter,
+		"projectId":       projectFilter,
+		"source":          sourceFilter,
+		"search":          search,
+		"fileCount":       len(files),
+		"files":           files,
+		"layout":          "chat uploads are stored under conversations/<conversationId>/; internal outputs are stored under internal/<source>/",
+		"sourceDirectory": []string{chatUploadsRootDirName, reductionRootDirName, artifactsRootDirName},
+	}
+	manifestBytes, _ := json.MarshalIndent(manifest, "", "  ")
+	mw, err := zw.Create("manifest.json")
+	if err != nil {
+		h.logger.Warn("写入附件导出清单失败", zap.Error(err))
+		return
+	}
+	_, _ = mw.Write(manifestBytes)
+
+	used := make(map[string]int)
+	for _, item := range files {
+		abs, err := h.resolveListedFilePath(item)
+		if err != nil {
+			continue
+		}
+		st, err := os.Stat(abs)
+		if err != nil || st.IsDir() {
+			continue
+		}
+		var zipName string
+		if item.Source == chatUploadSourceReduction || strings.HasPrefix(item.RelativePath, reductionVirtualPrefix) {
+			rel := strings.TrimPrefix(item.RelativePath, reductionVirtualPrefix)
+			zipName = filepath.ToSlash(filepath.Join("internal", "reduction", rel))
+			if filepath.Ext(zipName) == "" {
+				zipName += ".txt"
+			}
+		} else if item.Source == chatUploadSourceConversation || strings.HasPrefix(item.RelativePath, artifactVirtualPrefix) {
+			rel := strings.TrimPrefix(item.RelativePath, artifactVirtualPrefix)
+			zipName = filepath.ToSlash(filepath.Join("internal", "conversation_artifacts", rel))
+			if filepath.Ext(zipName) == "" {
+				zipName += ".txt"
+			}
+		} else {
+			conv := strings.TrimSpace(item.ConversationID)
+			if conv == "" || conv == "_manual" || conv == "_new" {
+				conv = "manual"
+			}
+			zipName = filepath.ToSlash(filepath.Join("conversations", conv, strings.TrimSpace(item.SubPath), item.Name))
+		}
+		if used[zipName] > 0 {
+			ext := filepath.Ext(zipName)
+			zipName = strings.TrimSuffix(zipName, ext) + fmt.Sprintf("-%d", used[zipName]+1) + ext
+		}
+		used[zipName]++
+		fw, err := zw.Create(zipName)
+		if err != nil {
+			h.logger.Warn("创建附件导出项失败", zap.String("path", item.RelativePath), zap.Error(err))
+			continue
+		}
+		src, err := os.Open(abs)
+		if err != nil {
+			continue
+		}
+		_, copyErr := io.Copy(fw, src)
+		_ = src.Close()
+		if copyErr != nil {
+			h.logger.Warn("复制附件导出项失败", zap.String("path", item.RelativePath), zap.Error(copyErr))
+			return
+		}
+	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "file", "export", "导出对话附件", "chat_upload", filename, map[string]interface{}{
+			"conversation_id": conversationFilter,
+			"project_id":      projectFilter,
+			"file_count":      len(files),
+		})
+	}
 }
 
 // Download GET /api/chat-uploads/download?path=...
 func (h *ChatUploadsHandler) Download(c *gin.Context) {
 	p := c.Query("path")
+	if strings.HasPrefix(strings.TrimSpace(p), reductionVirtualPrefix) {
+		if !h.reductionVirtualPathAllowed(c, p) {
+			c.JSON(http.StatusForbidden, gin.H{"error": "无权访问该资源"})
+			return
+		}
+		abs, err := h.resolveReductionVirtualPath(p)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+			return
+		}
+		st, err := os.Stat(abs)
+		if err != nil || st.IsDir() {
+			c.JSON(http.StatusNotFound, gin.H{"error": "file not found"})
+			return
+		}
+		name := filepath.Base(abs)
+		if filepath.Ext(name) == "" {
+			name += ".txt"
+		}
+		c.FileAttachment(abs, name)
+		return
+	}
+	if strings.HasPrefix(strings.TrimSpace(p), artifactVirtualPrefix) {
+		if !h.conversationArtifactVirtualPathAllowed(c, p) {
+			c.JSON(http.StatusForbidden, gin.H{"error": "无权访问该资源"})
+			return
+		}
+		abs, err := h.resolveConversationArtifactVirtualPath(p)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+			return
+		}
+		st, err := os.Stat(abs)
+		if err != nil || st.IsDir() {
+			c.JSON(http.StatusNotFound, gin.H{"error": "file not found"})
+			return
+		}
+		name := filepath.Base(abs)
+		if filepath.Ext(name) == "" {
+			name += ".txt"
+		}
+		c.FileAttachment(abs, name)
+		return
+	}
 	if !h.pathAllowed(c, p) {
 		c.JSON(http.StatusForbidden, gin.H{"error": "无权访问该资源"})
 		return
diff --git a/internal/handler/openapi.go b/internal/handler/openapi.go
index 1e45b6aa..a1933000 100644
--- a/internal/handler/openapi.go
+++ b/internal/handler/openapi.go
@@ -5798,10 +5798,15 @@ func (h *OpenAPIHandler) GetOpenAPISpec(c *gin.Context) {
 				"get": map[string]interface{}{
 					"tags":        []string{"对话附件"},
 					"summary":     "列出附件",
-					"description": "获取对话附件文件列表，可按对话ID过滤。",
+					"description": "获取对话文件列表，包含手动上传附件、工具输出和会话产物，可按会话、项目、来源、文件名搜索和分页过滤。",
 					"operationId": "listChatUploads",
 					"parameters": []map[string]interface{}{
 						{"name": "conversation", "in": "query", "required": false, "description": "按对话ID过滤", "schema": map[string]interface{}{"type": "string"}},
+						{"name": "project", "in": "query", "required": false, "description": "按项目ID过滤", "schema": map[string]interface{}{"type": "string"}},
+						{"name": "source", "in": "query", "required": false, "description": "按来源过滤：upload/reduction/conversation_artifact/all", "schema": map[string]interface{}{"type": "string", "enum": []string{"all", "upload", "reduction", "conversation_artifact"}}},
+						{"name": "search", "in": "query", "required": false, "description": "按文件名或子路径搜索", "schema": map[string]interface{}{"type": "string"}},
+						{"name": "page", "in": "query", "required": false, "description": "页码，从1开始", "schema": map[string]interface{}{"type": "integer", "default": 1}},
+						{"name": "pageSize", "in": "query", "required": false, "description": "每页数量，传 all 返回全部", "schema": map[string]interface{}{"oneOf": []map[string]interface{}{{"type": "integer"}, {"type": "string", "enum": []string{"all"}}}}},
 					},
 					"responses": map[string]interface{}{
 						"200": map[string]interface{}{
@@ -5823,11 +5828,18 @@ func (h *OpenAPIHandler) GetOpenAPISpec(c *gin.Context) {
 														"modifiedUnix":   map[string]interface{}{"type": "integer"},
 														"date":           map[string]interface{}{"type": "string"},
 														"conversationId": map[string]interface{}{"type": "string"},
+														"projectId":      map[string]interface{}{"type": "string"},
 														"subPath":        map[string]interface{}{"type": "string"},
+														"source":         map[string]interface{}{"type": "string", "description": "upload/reduction/conversation_artifact"},
 													},
 												},
 											},
 											"folders": map[string]interface{}{"type": "array", "items": map[string]interface{}{"type": "string"}},
+											"total":   map[string]interface{}{"type": "integer"},
+											"page":    map[string]interface{}{"type": "integer"},
+											"pageSize": map[string]interface{}{
+												"type": "integer",
+											},
 										},
 									},
 								},
@@ -5902,6 +5914,31 @@ func (h *OpenAPIHandler) GetOpenAPISpec(c *gin.Context) {
 					},
 				},
 			},
+			"/api/chat-uploads/export": map[string]interface{}{
+				"get": map[string]interface{}{
+					"tags":        []string{"对话附件"},
+					"summary":     "导出附件",
+					"description": "按当前过滤条件导出对话文件 ZIP，包含 manifest.json。",
+					"operationId": "exportChatUploads",
+					"parameters": []map[string]interface{}{
+						{"name": "conversation", "in": "query", "required": false, "description": "按对话ID过滤", "schema": map[string]interface{}{"type": "string"}},
+						{"name": "project", "in": "query", "required": false, "description": "按项目ID过滤", "schema": map[string]interface{}{"type": "string"}},
+						{"name": "source", "in": "query", "required": false, "description": "按来源过滤：upload/reduction/conversation_artifact/all", "schema": map[string]interface{}{"type": "string", "enum": []string{"all", "upload", "reduction", "conversation_artifact"}}},
+						{"name": "search", "in": "query", "required": false, "description": "按文件名或子路径搜索", "schema": map[string]interface{}{"type": "string"}},
+					},
+					"responses": map[string]interface{}{
+						"200": map[string]interface{}{
+							"description": "ZIP文件下载",
+							"content": map[string]interface{}{
+								"application/zip": map[string]interface{}{
+									"schema": map[string]interface{}{"type": "string", "format": "binary"},
+								},
+							},
+						},
+						"401": map[string]interface{}{"description": "未授权"},
+					},
+				},
+			},
 			"/api/chat-uploads/download": map[string]interface{}{
 				"get": map[string]interface{}{
 					"tags":        []string{"对话附件"},
diff --git a/internal/handler/openapi_i18n.go b/internal/handler/openapi_i18n.go
index 21286e49..d0480c0f 100644
--- a/internal/handler/openapi_i18n.go
+++ b/internal/handler/openapi_i18n.go
@@ -61,7 +61,7 @@ var apiDocI18nSummaryToKey = map[string]string{
 	"获取连接状态": "getWebshellConnectionState", "保存连接状态": "saveWebshellConnectionState",
 	"获取AI对话历史": "getWebshellAIHistory", "列出AI对话": "listWebshellAIConversations",
 	"执行WebShell命令": "webshellExec", "WebShell文件操作": "webshellFileOp",
-	"列出附件": "listChatUploads", "上传附件": "uploadChatFile", "删除附件": "deleteChatUpload",
+	"列出附件": "listChatUploads", "导出附件": "exportChatUploads", "上传附件": "uploadChatFile", "删除附件": "deleteChatUpload",
 	"下载附件": "downloadChatUpload", "获取附件文本内容": "getChatUploadContent",
 	"写入附件文本内容": "putChatUploadContent", "创建附件目录": "mkdirChatUpload", "重命名附件": "renameChatUpload",
 	"企业微信回调验证": "wecomCallbackVerify", "企业微信消息回调": "wecomCallbackMessage",