Add files via upload

internal/database/conversation.go

@@ -4,6 +4,8 @@ import (
 	"database/sql"
 	"encoding/json"
 	"fmt"
+	"os"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -416,6 +418,14 @@ func (db *DB) DeleteConversation(id string) error {
 	if err != nil {
 		return fmt.Errorf("删除对话失败: %w", err)
 	}
+	// Best-effort cleanup for conversation-scoped filesystem artifacts
+	// (e.g., summarization transcript, reduction/checkpoint files under conversation_artifacts/<id>).
+	if base := strings.TrimSpace(db.conversationArtifactsDir); base != "" {
+		artDir := filepath.Join(base, id)
+		if rmErr := os.RemoveAll(artDir); rmErr != nil {
+			db.logger.Warn("删除会话 artifacts 目录失败", zap.String("conversationId", id), zap.String("dir", artDir), zap.Error(rmErr))
+		}
+	}
 
 	db.logger.Info("对话及其所有相关数据已删除", zap.String("conversationId", id))
 	return nil

internal/database/database.go

@@ -3,6 +3,8 @@ package database
 import (
 	"database/sql"
 	"fmt"
+	"os"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -21,7 +23,8 @@ func configureDBPool(db *sql.DB) {
 // DB 数据库连接
 type DB struct {
 	*sql.DB
-	logger *zap.Logger
+	logger                   *zap.Logger
+	conversationArtifactsDir string
 }
 
 // NewDB 创建数据库连接
@@ -41,6 +44,13 @@ func NewDB(dbPath string, logger *zap.Logger) (*DB, error) {
 		DB:     db,
 		logger: logger,
 	}
+	// Keep conversation-scoped artifacts near database files, so cleanup can follow conversation lifecycle.
+	baseDir := filepath.Join(filepath.Dir(dbPath), "conversation_artifacts")
+	if mkErr := os.MkdirAll(baseDir, 0o755); mkErr == nil {
+		database.conversationArtifactsDir = baseDir
+	} else if logger != nil {
+		logger.Warn("创建 conversation artifacts 目录失败", zap.String("dir", baseDir), zap.Error(mkErr))
+	}
 
 	// 初始化表
 	if err := database.initTables(); err != nil {