test: 修正两处断言旧行为的存量测试(患者→我 文案、lab 段归并)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

康康Tests/SeriesBucketTests.swift

@@ -18,14 +18,17 @@ struct SeriesBucketTests {
                   seriesKey: seriesKey)
     }
 
-    @Test func skipsIndicatorsWithoutSeriesKey() {
+    @Test func indicatorsWithoutSeriesKeyFoldIntoLabBucket() {
+        // 「lab 段」特性:无 seriesKey 的指标按 name+unit 归并,同名 ≥minPoints 次即成趋势。
         let now = Date()
         let items = [
-            makeIndicator(value: "5.0", capturedAt: now, seriesKey: nil),
+            makeIndicator(value: "5.0", capturedAt: now.addingTimeInterval(-86_400), seriesKey: nil),
             makeIndicator(value: "5.2", capturedAt: now, seriesKey: nil),
         ]
         let buckets = SeriesBucket.build(from: items)
-        #expect(buckets.isEmpty)
+        #expect(buckets.count == 1)
+        #expect(buckets.first?.kind == .lab)
+        #expect(buckets.first?.lines.first?.points.count == 2)
     }
 
     @Test func filtersOutSeriesWithFewerThanMinPoints() {