feat(ops): ECR-007 行为分析与 ECR-008 内容运营后台

落地埋点 ingest/数据看板、首页宫格 CMS 与测评上下架；含账号引导、问答流式与免责声明去重，以及 review P1 审计同事务修复。

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

apps/api/internal/service/admin/content.go

@@ -0,0 +1,61 @@
+package admin
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5"
+
+	"github.com/yuxingu/digital-psychology/apps/api/internal/repository"
+	homesvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/home"
+)
+
+var (
+	ErrInvalidScaleStatus = errors.New("invalid scale status")
+	ErrScaleNotFound      = errors.New("scale not found")
+)
+
+// ListHomeTools returns all grid tools.
+func (s *Service) ListHomeTools(ctx context.Context) ([]repository.HomeTool, error) {
+	if s.Home == nil {
+		return nil, errors.New("home unavailable")
+	}
+	return s.Home.ListAdmin(ctx)
+}
+
+// ReplaceHomeTools replaces grid and audits in one transaction.
+func (s *Service) ReplaceHomeTools(ctx context.Context, adminID uuid.UUID, items []homesvc.ReplaceInput) error {
+	if s.Home == nil {
+		return errors.New("home unavailable")
+	}
+	meta, _ := json.Marshal(map[string]any{"count": len(items)})
+	return s.Home.ReplaceWithAudit(ctx, adminID, items, meta)
+}
+
+// ListScalesAdmin returns all scales.
+func (s *Service) ListScalesAdmin(ctx context.Context) ([]repository.ScaleAdminItem, error) {
+	if s.Scales == nil {
+		return nil, errors.New("scales unavailable")
+	}
+	return s.Scales.ListAllAdmin(ctx)
+}
+
+// PatchScaleStatus updates published|draft and audits in one transaction.
+func (s *Service) PatchScaleStatus(ctx context.Context, adminID, scaleID uuid.UUID, status string) error {
+	if status != "published" && status != "draft" {
+		return ErrInvalidScaleStatus
+	}
+	if s.Scales == nil {
+		return errors.New("scales unavailable")
+	}
+	meta, _ := json.Marshal(map[string]any{"status": status})
+	if err := s.Scales.UpdateStatusWithAudit(ctx, scaleID, status, adminID, meta); err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			return ErrScaleNotFound
+		}
+		return err
+	}
+	return nil
+}