feat: 并发文件审查，可配置并行度

handlers/review.go

@@ -38,9 +38,10 @@ func (h *ReviewHandler) Review(c *gin.Context) {
 
 	// Parse request
 	var req struct {
-		Base string `json:"base" binding:"required"`
-		Head string `json:"head" binding:"required"`
-		TopN *int   `json:"top_n"`
+		Base        string `json:"base" binding:"required"`
+		Head        string `json:"head" binding:"required"`
+		TopN        *int   `json:"top_n"`
+		Concurrency *int   `json:"concurrency"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "base and head are required"})
@@ -61,6 +62,20 @@ func (h *ReviewHandler) Review(c *gin.Context) {
 		}
 	}
 
+	// Determine concurrency: request value > settings default (5)
+	concurrency := 5
+	if req.Concurrency != nil {
+		concurrency = *req.Concurrency
+	} else {
+		var concStr string
+		h.db.QueryRow(`SELECT value FROM settings WHERE key = 'review.concurrency'`).Scan(&concStr)
+		if concStr != "" {
+			if n, err := strconv.Atoi(concStr); err == nil && n > 0 {
+				concurrency = n
+			}
+		}
+	}
+
 	// Set SSE headers
 	c.Header("Content-Type", "text/event-stream")
 	c.Header("Cache-Control", "no-cache")
@@ -84,7 +99,7 @@ func (h *ReviewHandler) Review(c *gin.Context) {
 	h.db.Exec(`UPDATE repositories SET last_used = datetime('now') WHERE id = ?`, id)
 
 	// Run AI review
-	reviewResult, err := services.GenerateReview(h.db, localPath, req.Base, req.Head, topN, sendEvent)
+	reviewResult, err := services.GenerateReview(h.db, localPath, req.Base, req.Head, topN, concurrency, sendEvent)
 	if err != nil {
 		sendEvent("error", map[string]interface{}{"message": err.Error()})
 		return