feat: 添加队列工作者配置，增强作业提供者功能，支持并发控制和健康检查

templates/project/providers/job/config.go.tpl

@@ -17,7 +17,19 @@ func DefaultProvider() container.ProviderContainer {
 	}
 }
 
-type Config struct{}
+type Config struct {
+	// Optional per-queue worker concurrency. If empty, defaults apply.
+	QueueWorkers QueueWorkersConfig
+}
+
+// QueueWorkers allows configuring worker concurrency per queue.
+// Key is the queue name, value is MaxWorkers. If empty, defaults are used.
+// Example TOML:
+//
+//	[Job]
+//	# high=20, default=10, low=5
+//	# QueueWorkers = { high = 20, default = 10, low = 5 }
+type QueueWorkersConfig map[string]int
 
 const (
 	PriorityDefault = river.PriorityDefault
@@ -31,3 +43,25 @@ const (
 	QueueDefault = river.QueueDefault
 	QueueLow     = "low"
 )
+
+// queueConfig returns a river.QueueConfig map built from QueueWorkers or defaults.
+func (c *Config) queueConfig() map[string]river.QueueConfig {
+	cfg := map[string]river.QueueConfig{}
+	if c == nil || len(c.QueueWorkers) == 0 {
+		cfg[QueueHigh] = river.QueueConfig{MaxWorkers: 10}
+		cfg[QueueDefault] = river.QueueConfig{MaxWorkers: 10}
+		cfg[QueueLow] = river.QueueConfig{MaxWorkers: 10}
+		return cfg
+	}
+	for name, n := range c.QueueWorkers {
+		if n <= 0 {
+			n = 1
+		}
+		cfg[name] = river.QueueConfig{MaxWorkers: n}
+	}
+
+	if _, ok := cfg[QueueDefault]; !ok {
+		cfg[QueueDefault] = river.QueueConfig{MaxWorkers: 10}
+	}
+	return cfg
+}