feat(admin): 运行时策略 - 配置对象存储策略与默认并发

backend/internal/platform/coordination.go

@@ -24,7 +24,7 @@ type localRateEntry struct {
 const (
 	MinChannelConcurrencyLimit     = 1
 	MaxChannelConcurrencyLimit     = maxRuntimeConcurrency
-	defaultChannelConcurrencyValue = 3
+	defaultChannelConcurrencyValue = 8
 )
 
 type channelSlotError struct {
@@ -381,13 +381,17 @@ func envInt(key string, fallback int) int {
 	return value
 }
 
+func defaultWorkerConcurrencyLimit() int {
+	return envInt("CANVAS_WORKER_CONCURRENCY", defaultWorkerConcurrency)
+}
+
 func defaultChannelConcurrencyLimit() int {
-	return effectiveChannelConcurrencyLimit(envInt("CANVAS_CHANNEL_CONCURRENCY", defaultChannelConcurrencyValue))
+	return envInt("CANVAS_CHANNEL_CONCURRENCY", defaultChannelConcurrencyValue)
 }
 
 func effectiveChannelConcurrencyLimit(configured int) int {
 	if configured < MinChannelConcurrencyLimit || configured > MaxChannelConcurrencyLimit {
-		return defaultChannelConcurrencyValue
+		return defaultChannelConcurrencyLimit()
 	}
 	return configured
 }