feat: P1 合盘/星座/问答与测测完整设计包及模拟器取证工具

落地 synastry/star/ask API 与 H5 页面，补齐 cece-frontend-re complete-design 证据文档，并加入 Android 模拟器截图抓取脚本。

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

apps/api/internal/repository/mood_repo.go

@@ -0,0 +1,55 @@
+package repository
+
+import (
+	"context"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/yuxingu/digital-psychology/apps/api/internal/model"
+)
+
+// MoodRepo persists daily moods.
+type MoodRepo struct {
+	Pool *pgxpool.Pool
+}
+
+// UpsertToday inserts or updates today's mood for user.
+func (r *MoodRepo) UpsertToday(ctx context.Context, userID uuid.UUID, day time.Time, score *int, note *string) (*model.Mood, error) {
+	m := &model.Mood{}
+	var dayOut time.Time
+	err := r.Pool.QueryRow(ctx, `
+		INSERT INTO moods(user_id, day, score, note)
+		VALUES ($1, $2::date, $3, $4)
+		ON CONFLICT (user_id, day) DO UPDATE
+		  SET score = EXCLUDED.score,
+		      note = EXCLUDED.note,
+		      updated_at = now(),
+		      deleted_at = NULL
+		RETURNING id, user_id, day, score, note, created_at`,
+		userID, day.Format("2006-01-02"), score, note,
+	).Scan(&m.ID, &m.UserID, &dayOut, &m.Score, &m.Note, &m.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	m.Day = dayOut.Format("2006-01-02")
+	return m, nil
+}
+
+// GetToday returns today's mood if any.
+func (r *MoodRepo) GetToday(ctx context.Context, userID uuid.UUID, day time.Time) (*model.Mood, error) {
+	m := &model.Mood{}
+	var dayOut time.Time
+	err := r.Pool.QueryRow(ctx, `
+		SELECT id, user_id, day, score, note, created_at
+		FROM moods
+		WHERE user_id=$1 AND day=$2::date AND deleted_at IS NULL`,
+		userID, day.Format("2006-01-02"),
+	).Scan(&m.ID, &m.UserID, &dayOut, &m.Score, &m.Note, &m.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	m.Day = dayOut.Format("2006-01-02")
+	return m, nil
+}