Fix timestamp panic: pass time.Time through instead of converting midnight to date string

The convertPgValue function was converting time.Time values at midnight
to date-only strings ("2026-01-01"), which caused the SDK to panic when
trying to parse them as timestamps for timestamptz columns.

Author: daniel-garcia

resources/services/sync.go

@@ -180,11 +180,10 @@ func convertPgValue(value any) any {
 		return "(" + result + ")"
 
 	case time.Time:
-		// SDK's date32 type expects "YYYY-MM-DD" format, not the full timestamp
-		// that pgx returns for date columns.
-		if v.Hour() == 0 && v.Minute() == 0 && v.Second() == 0 && v.Nanosecond() == 0 {
-			return v.Format("2006-01-02")
-		}
+		// Always pass time.Time through — the SDK handles it natively for both
+		// timestamp and date Arrow types. The previous midnight check incorrectly
+		// converted timestamps at midnight to date-only strings, causing the SDK
+		// to panic when parsing them as timestamps.
 		return v
 
 	case pgtype.Date:

resources/services/sync_test.go

@@ -133,17 +133,17 @@ func TestConvertPgValue_GeometryTypes(t *testing.T) {
 	})
 }
 
-func TestConvertPgValue_Date(t *testing.T) {
-	t.Run("time.Time date-only", func(t *testing.T) {
+func TestConvertPgValue_Timestamp(t *testing.T) {
+	t.Run("time.Time midnight passes through as time.Time", func(t *testing.T) {
 		d := time.Date(2026, 1, 15, 0, 0, 0, 0, time.UTC)
 		result := convertPgValue(d)
-		assert.Equal(t, "2026-01-15", result)
+		assert.Equal(t, d, result) // must stay time.Time, not become "2026-01-15"
 	})
 
-	t.Run("time.Time with time component", func(t *testing.T) {
+	t.Run("time.Time with time component passes through", func(t *testing.T) {
 		d := time.Date(2026, 1, 15, 12, 30, 0, 0, time.UTC)
 		result := convertPgValue(d)
-		assert.Equal(t, d, result) // passthrough — not date-only
+		assert.Equal(t, d, result)
 	})
 
 	t.Run("pgtype.Date", func(t *testing.T) {