server: Go 服务器（REST+WSS 网关+JWT+Argon2+配对+素材直链+任务状态机）；修复并发下线 send-on-closed-channel、下发查询 SQL 优先级、配对码原子占用、上传体积上限、JWT 默认密钥告警

server/internal/ws/browser.go

@@ -0,0 +1,45 @@
+package ws
+
+import (
+	"log"
+
+	"github.com/coder/websocket"
+	"github.com/gin-gonic/gin"
+
+	"everypublish/server/internal/auth"
+	"everypublish/server/internal/config"
+)
+
+// HandleBrowser 浏览器实时通道：?token=JWT 鉴权，只读订阅工作空间事件
+func HandleBrowser(cfg *config.Config, hub *Hub) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		claims, err := auth.ParseAccess(cfg.JWTSecret, c.Query("token"))
+		if err != nil {
+			c.JSON(401, gin.H{"code": 1002, "message": "令牌无效"})
+			return
+		}
+		conn, err := websocket.Accept(c.Writer, c.Request, &websocket.AcceptOptions{InsecureSkipVerify: true})
+		if err != nil {
+			return
+		}
+		sess := &Conn{
+			ID:   randHex(16),
+			Kind: "browser",
+			WSID: claims.WorkspaceID,
+			ws:   conn,
+			send: make(chan []byte, 64),
+		}
+		hub.RegisterBrowser(sess)
+		go sess.writeLoop()
+		log.Printf("[ws] browser session %s online (workspace %d)", sess.ID, claims.WorkspaceID)
+		defer func() {
+			hub.UnregisterBrowser(sess)
+			log.Printf("[ws] browser session %s offline", sess.ID)
+		}()
+		for {
+			if _, _, err = conn.Read(c.Request.Context()); err != nil {
+				return
+			}
+		}
+	}
+}