feat: allow enabling all plugins into a channel

internal/admin/admin.go

@@ -564,6 +564,13 @@ func (a *Admin) handleChannelDetail(w http.ResponseWriter, r *http.Request) {
 				return
 			}
 
+			// Update enable_all_plugins
+			enableAllPlugins := r.FormValue("enable_all_plugins") == "true"
+			if err := a.db.UpdateChannelEnableAllPlugins(id, enableAllPlugins); err != nil {
+				http.Error(w, "Failed to update channel enable all plugins", http.StatusInternalServerError)
+				return
+			}
+
 			a.addFlash(w, r, "Channel updated", "success")
 			http.Redirect(w, r, "/admin/channels/"+channelID, http.StatusSeeOther)
 			return