fix: rebuild MES as compilable go-zero+ent backend (renamed bj_power_mes), restore 3 workstation projects from pristine original, align naming; all Go projects go build clean

bj_power_mes/internal/processor/scheduler/scheduler.go

@@ -0,0 +1,74 @@
+package scheduler
+
+import "context"
+
+// Scheduler 三层编排器——串联 TaskGenerator → ConstraintFilter → PolicyEngine。
+// 骨架阶段：只定义接口和编排流程，不直接修改 processor 包。
+// 后续阶段：processor 包的 JobRuntime 将通过此 Scheduler 替代直接调用 Dispatcher。
+type Scheduler struct {
+	generator TaskGenerator
+	filter    ConstraintFilter
+	policy    PolicyEngine
+}
+
+func NewScheduler(g TaskGenerator, f ConstraintFilter, p PolicyEngine) *Scheduler {
+	return &Scheduler{
+		generator: g,
+		filter:    f,
+		policy:    p,
+	}
+}
+
+// ScheduleAll 对多个 Job 执行三层调度，合并结果后排序。
+// 用于全局调度场景（如收到 MachineTaskComplete 信号后重新评估所有 Job）。
+func (s *Scheduler) ScheduleAll(ctx context.Context, jobs []JobView, state SystemState) []CandidateTask {
+	var allCandidates []CandidateTask
+	for _, job := range jobs {
+		candidates := s.generator.Generate(job)
+		allCandidates = append(allCandidates, candidates...)
+	}
+
+	if len(allCandidates) == 0 {
+		return nil
+	}
+
+	feasible := s.filter.Filter(ctx, allCandidates, state)
+
+	if len(feasible) == 0 {
+		return nil
+	}
+
+	return s.policy.Rank(feasible, state)
+}
+
+// DefaultScheduler 创建默认配置的 Scheduler。
+// 使用 RecipeTaskGenerator + 所有内置约束 + 默认优先级策略。
+func DefaultScheduler() *Scheduler {
+	generator := NewRecipeTaskGenerator()
+	filter := NewCompositeFilter(
+		NewMachineDisabledConstraint(),
+		NewMachineBusyConstraint(),
+		NewMachineEmptyConstraint(),
+		NewTempSlotFullConstraint(),
+		NewOrderPausedConstraint(),
+		NewOrderPausingConstraint(),
+		NewOrderCancellingConstraint(),
+		NewJobSuspendedConstraint(),
+		NewExchangePairConstraint(),
+		NewReplenishConstraint(),
+		NewWasteReadyConstraint(),
+	)
+	policy := NewPriorityPolicy(
+		UnloadFirstRule,
+		SamplingFirstRule,
+		LaterStageUnloadFirstRule,
+		IdleMachineLoadFirstRule,
+		LaterStageLoadFirstRule,
+		ExchangeFirstRule,
+		BasePriorityRule,
+		JobIDSmallerFirstRule,
+		SameMachineRule,
+	)
+
+	return NewScheduler(generator, filter, policy)
+}