Version: 0.7.9.dev.260326

后端：
1.把最后一块拼图：schedule_refine也搬迁到了agent2，此时agent已经完全解耦。但是它没融入新架构，Codex只尝试把它调整了一部分，回退了一些错误的更改，保持着现在的可运行状态。下次继续改。
2.agent目录先保留，直到refine彻底融入新架构。
3.改善Codex主导的新史山结构:node文件夹里面大量文件，转而改成了module.go+module_tool.go的双文件格局，极大提升架构整洁度和代码可读性。
前端：
1.新开了日历界面，正在保持往前推进。做了很多更改，感觉越来越好了。

backend/agent2/node/schedule_refine_impl/composite_route_test.go

@@ -0,0 +1,85 @@
+package schedulerefine
+
+import (
+	"context"
+	"testing"
+
+	"github.com/LoveLosita/smartflow/backend/model"
+)
+
+func TestRefineToolSpreadEvenRespectsCanonicalRouteFilters(t *testing.T) {
+	entries := []model.HybridScheduleEntry{
+		{TaskItemID: 1, Name: "任务1", Type: "task", Status: "suggested", Week: 16, DayOfWeek: 1, SectionFrom: 1, SectionTo: 2, ContextTag: "A"},
+		// 1. 这里放一个更早周次的 existing 条目，用来把可查询窗口拉到 W11；
+		// 2. 若复合工具内部丢了 week_filter/day_of_week，就会优先落到更早的 W11D1，而不是目标 W12D3。
+		{TaskItemID: 99, Name: "课程", Type: "course", Status: "existing", Week: 11, DayOfWeek: 5, SectionFrom: 11, SectionTo: 12, BlockForSuggested: true},
+	}
+	params := map[string]any{
+		"task_item_ids": []int{1},
+		"week_filter":   []int{12},
+		"day_of_week":   []int{3},
+		"allow_embed":   false,
+	}
+
+	nextEntries, result := refineToolSpreadEven(entries, params, planningWindow{Enabled: false}, refineToolPolicy{
+		OriginOrderMap: map[int]int{1: 1},
+	})
+	if !result.Success {
+		t.Fatalf("SpreadEven 执行失败: %s", result.Result)
+	}
+
+	idx := findSuggestedByID(nextEntries, 1)
+	if idx < 0 {
+		t.Fatalf("未找到 task_item_id=1")
+	}
+	got := nextEntries[idx]
+	if got.Week != 12 || got.DayOfWeek != 3 {
+		t.Fatalf("期望复合工具严格遵守 week_filter/day_of_week，实际落点=W%dD%d", got.Week, got.DayOfWeek)
+	}
+}
+
+func TestRunCompositeRouteNodeAllowsHandoffWithoutDeterministicObjective(t *testing.T) {
+	entries := []model.HybridScheduleEntry{
+		{TaskItemID: 11, Name: "任务11", Type: "task", Status: "suggested", Week: 16, DayOfWeek: 1, SectionFrom: 1, SectionTo: 2, ContextTag: "数学"},
+		{TaskItemID: 12, Name: "任务12", Type: "task", Status: "suggested", Week: 16, DayOfWeek: 1, SectionFrom: 3, SectionTo: 4, ContextTag: "算法"},
+		{TaskItemID: 13, Name: "任务13", Type: "task", Status: "suggested", Week: 16, DayOfWeek: 1, SectionFrom: 5, SectionTo: 6, ContextTag: "数学"},
+	}
+	st := &ScheduleRefineState{
+		UserMessage:           "把这些任务按最少上下文切换整理一下",
+		HybridEntries:         cloneHybridEntries(entries),
+		InitialHybridEntries:  cloneHybridEntries(entries),
+		WorksetTaskIDs:        []int{11, 12, 13},
+		RequiredCompositeTool: "MinContextSwitch",
+		CompositeRetryMax:     0,
+		ExecuteMax:            4,
+		OriginOrderMap:        map[int]int{11: 1, 12: 2, 13: 3},
+		CompositeToolCalled: map[string]bool{
+			"SpreadEven":       false,
+			"MinContextSwitch": false,
+		},
+		CompositeToolSuccess: map[string]bool{
+			"SpreadEven":       false,
+			"MinContextSwitch": false,
+		},
+	}
+
+	stageLogs := make([]string, 0, 8)
+	nextState, err := runCompositeRouteNode(context.Background(), st, func(stage, detail string) {
+		stageLogs = append(stageLogs, stage+"|"+detail)
+	})
+	if err != nil {
+		t.Fatalf("runCompositeRouteNode 返回错误: %v", err)
+	}
+	if nextState == nil {
+		t.Fatalf("runCompositeRouteNode 返回 nil state")
+	}
+	if !nextState.CompositeRouteSucceeded {
+		t.Fatalf("期望复合分支在缺少 deterministic objective 时直接出站，实际 CompositeRouteSucceeded=false, stages=%v, action_logs=%v", stageLogs, nextState.ActionLogs)
+	}
+	if nextState.DisableCompositeTools {
+		t.Fatalf("期望复合分支直接进入终审，不应降级为禁复合 ReAct")
+	}
+	if !nextState.CompositeToolSuccess["MinContextSwitch"] {
+		t.Fatalf("期望 MinContextSwitch 成功状态被记录")
+	}
+}