feat(Ask): 检索过程可视化 — RAG 命中记录以 chips 展示,生成前先看见

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

康康Tests/RetrievalSummaryTests.swift

@@ -0,0 +1,22 @@
+import Testing
+@testable import 康康
+
+struct RetrievalSummaryTests {
+
+    @Test func groupsAndCountsPreservingOrder() {
+        let chips = HealthExportService.RetrievalSummary.groupedChips(
+            ["血压", "血糖", "血压", "血压", "体重"], cap: 8)
+        #expect(chips == ["血压 ×3", "血糖", "体重"])
+    }
+
+    @Test func capsAndAppendsOverflow() {
+        let names = (1...12).map { "指标\($0)" }
+        let chips = HealthExportService.RetrievalSummary.groupedChips(names, cap: 8)
+        #expect(chips.count == 9)
+        #expect(chips.last == "+4")
+    }
+
+    @Test func emptyInputGivesEmptyChips() {
+        #expect(HealthExportService.RetrievalSummary.groupedChips([], cap: 8).isEmpty)
+    }
+}