refactor: Gitea 式目录改组，移除本分支 SPA 与杂项产物

将 model/service/handler/middleware 迁至 models/services/routers/api/modules/auth，并删除 frontend、embed_static、scripts 及误入库缓存/二进制。

Co-authored-by: Cursor <cursoragent@cursor.com>

services/aside_widgets_test.go

@@ -0,0 +1,37 @@
+package service
+
+import "testing"
+
+func TestNormalizeAsideWidgetsPreservesOrder(t *testing.T) {
+	in := []AsideWidget{
+		{ID: AsideWidgetFriendLinks, Enabled: true},
+		{ID: AsideWidgetTagCloud, Enabled: true},
+		{ID: AsideWidgetRecentComments, Enabled: false},
+	}
+	out := NormalizeAsideWidgets(in)
+	if len(out) != 4 {
+		t.Fatalf("want 4 widgets, got %d", len(out))
+	}
+	want := []string{AsideWidgetFriendLinks, AsideWidgetTagCloud, AsideWidgetRecentComments, AsideWidgetRecentUsers}
+	for i, id := range want {
+		if out[i].ID != id {
+			t.Fatalf("index %d: want %s, got %s", i, id, out[i].ID)
+		}
+	}
+	if !out[0].Enabled || !out[1].Enabled || out[2].Enabled || out[3].Enabled {
+		t.Fatalf("enabled flags mismatch: %+v", out)
+	}
+}
+
+func TestAsideBoolsFromWidgets(t *testing.T) {
+	widgets := []AsideWidget{
+		{ID: AsideWidgetRecentComments, Enabled: true},
+		{ID: AsideWidgetFriendLinks, Enabled: false},
+		{ID: AsideWidgetTagCloud, Enabled: true},
+		{ID: AsideWidgetRecentUsers, Enabled: true},
+	}
+	bools := asideBoolsFromWidgets(widgets)
+	if !bools.tagCloud || !bools.recentComments || bools.friendLinks {
+		t.Fatalf("unexpected bools: %+v", bools)
+	}
+}