feat(daemon-beta t1): 多資料夾 config——watch_folders[]+單數相容、manifest 每根一份、多根掃描標 Root、托盤資料層相容；rag-wave1 closed→daemon-beta 實作卷 active

- direct.go: Folders() 正規化（去重保序）/manifestPathFor（單根沿用不丟狀態、多根 sha 尾碼）/RunDirectOnce 多根彙總
- 新測試 4 支全綠（單數相容/多根去重/缺欄驗證/多根 dry-run 標 Root）；既有 7 支不動全綠
- tray: config 加 watch_folders 欄（防存檔洗掉）＋addWatchFolder 資料層；勾選 UI=task 7

direct_multi_test.go

@@ -0,0 +1,124 @@
+// direct_multi_test.go — daemon-beta task 1 多資料夾 config（單數相容／manifest 分根／多根掃描）。
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func writeDirectConfig(t *testing.T, dir string, cfg map[string]any) string {
+	t.Helper()
+	data, _ := json.Marshal(cfg)
+	p := filepath.Join(dir, "config.json")
+	if err := os.WriteFile(p, data, 0o600); err != nil {
+		t.Fatal(err)
+	}
+	return p
+}
+
+// 單數舊制照舊可載入；Folders() 正規化＝一根。
+func TestLoadDirectConfigSingularCompat(t *testing.T) {
+	dir := t.TempDir()
+	p := writeDirectConfig(t, dir, map[string]any{
+		"watch_folder": "/tmp/kb", "manifest": filepath.Join(dir, "m.json"),
+		"cypher_url": "https://x.example", "namespace": "demo",
+	})
+	c, err := LoadDirectConfig(p)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got := c.Folders(); len(got) != 1 || got[0] != "/tmp/kb" {
+		t.Fatalf("Folders()=%v", got)
+	}
+	// 單根 manifest 沿用原路徑（升級不丟狀態）
+	if mp := c.manifestPathFor("/tmp/kb"); mp != c.Manifest {
+		t.Fatalf("單根 manifest 應沿用原路徑，got %s", mp)
+	}
+}
+
+// 只填 watch_folders 也合法；單數與清單並存時去重保序。
+func TestLoadDirectConfigMulti(t *testing.T) {
+	dir := t.TempDir()
+	p := writeDirectConfig(t, dir, map[string]any{
+		"watch_folder": "/tmp/a", "watch_folders": []string{"/tmp/b", "/tmp/a", "/tmp/c"},
+		"manifest":   filepath.Join(dir, "m.json"),
+		"cypher_url": "https://x.example", "namespace": "demo",
+	})
+	c, err := LoadDirectConfig(p)
+	if err != nil {
+		t.Fatal(err)
+	}
+	got := c.Folders()
+	want := []string{"/tmp/a", "/tmp/b", "/tmp/c"}
+	if len(got) != len(want) {
+		t.Fatalf("Folders()=%v want %v", got, want)
+	}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Fatalf("Folders()[%d]=%s want %s", i, got[i], want[i])
+		}
+	}
+	// 多根＝每根 manifest 各一份、彼此不同、且尾碼對同一路徑穩定
+	m1 := c.manifestPathFor("/tmp/a")
+	m2 := c.manifestPathFor("/tmp/b")
+	if m1 == m2 || m1 == c.Manifest {
+		t.Fatalf("多根 manifest 應分根：%s vs %s", m1, m2)
+	}
+	if m1 != c.manifestPathFor("/tmp/a") {
+		t.Fatal("同路徑尾碼應穩定")
+	}
+}
+
+// 兩欄都空＝缺必填。
+func TestLoadDirectConfigMissingFolders(t *testing.T) {
+	dir := t.TempDir()
+	p := writeDirectConfig(t, dir, map[string]any{
+		"manifest": filepath.Join(dir, "m.json"), "cypher_url": "https://x.example", "namespace": "demo",
+	})
+	if _, err := LoadDirectConfig(p); err == nil {
+		t.Fatal("兩欄皆空應報缺必填")
+	}
+}
+
+// 多根 dry-run：各根的檔案都被掃到、事件標 Root、manifest 各自獨立。
+func TestRunDirectOnceMultiRootDryRun(t *testing.T) {
+	base := t.TempDir()
+	rootA := filepath.Join(base, "rootA")
+	rootB := filepath.Join(base, "rootB")
+	for _, d := range []string{rootA, rootB} {
+		if err := os.MkdirAll(d, 0o755); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := os.WriteFile(filepath.Join(rootA, "a.md"), []byte("# A"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(rootB, "b.md"), []byte("# B"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	cfg := &DirectConfig{
+		WatchFolders: []string{rootA, rootB},
+		Manifest:     filepath.Join(base, "manifest.json"),
+		CypherURL:    "https://x.example", Namespace: "demo",
+		MaxRemoved: DefaultMaxRemovedRatio,
+	}
+	results, exit, _ := RunDirectOnce(cfg, true)
+	if exit != 0 {
+		t.Fatalf("dry-run 不應失敗：%+v", results)
+	}
+	byRoot := map[string][]string{}
+	for _, r := range results {
+		if r.Status != "planned" {
+			t.Fatalf("dry-run 事件應為 planned：%+v", r)
+		}
+		byRoot[r.Root] = append(byRoot[r.Root], r.Path)
+	}
+	if len(byRoot[rootA]) != 1 || byRoot[rootA][0] != "a.md" {
+		t.Fatalf("rootA 事件錯：%v", byRoot[rootA])
+	}
+	if len(byRoot[rootB]) != 1 || byRoot[rootB][0] != "b.md" {
+		t.Fatalf("rootB 事件錯：%v", byRoot[rootB])
+	}
+}