feat(monitor): add UserProfile + MonitorMetric catalog + Indicator.seriesKey

数据层(spec 2026-05-26):
- UserProfile @Model:核心 4 项 + 健康背景 + 用药,SwiftData 单例(loadOrCreate)
- Indicator 加 seriesKey: String?,标识长期指标分组('bp.systolic' 等)
- MonitorMetric enum 8 case:血压(2 field 拆 2 Indicator)/ 空腹+餐后血糖 /
  体重 / 体温 / 心率 / SpO2 / 身高
- effectiveRange(for:profile:) 实现 1 条 Profile-aware 规则:
  age >= 65 时 bp.systolic 上限 140→150
- KangkangApp schema 加 UserProfile.self

测试 17 个全绿(UserProfile 6 + MonitorMetric 11);schema 烟测扩 2(seriesKey roundtrip + UserProfile persist)。
UI 层 + Timeline 合并下个 commit。

康康Tests/UserProfileTests.swift

@@ -0,0 +1,83 @@
+import Testing
+import SwiftData
+import Foundation
+@testable import 康康
+
+@MainActor
+struct UserProfileTests {
+
+    private func makeContext() throws -> ModelContext {
+        let schema = Schema([UserProfile.self])
+        let config = ModelConfiguration(schema: schema, isStoredInMemoryOnly: true)
+        let container = try ModelContainer(for: schema, configurations: [config])
+        return ModelContext(container)
+    }
+
+    @Test func freshProfileHasNilDemographics() {
+        let p = UserProfile()
+        #expect(p.birthYear == nil)
+        #expect(p.heightCM == nil)
+        #expect(p.biologicalSexRaw == "")
+        #expect(p.bloodTypeRaw == "")
+        #expect(p.allergies.isEmpty)
+        #expect(p.chronicConditions.isEmpty)
+        #expect(p.currentMedications.isEmpty)
+        #expect(p.familyHistory.isEmpty)
+        #expect(p.age == nil)
+        #expect(p.sex == .undisclosed)
+        #expect(p.hasAnyBasics == false)
+        #expect(p.summaryLine == "")
+    }
+
+    @Test func ageComputedFromBirthYear() {
+        let p = UserProfile(birthYear: 1985)
+        let currentYear = Calendar.current.component(.year, from: .now)
+        #expect(p.age == currentYear - 1985)
+    }
+
+    @Test func sexEnumRoundtripsThroughRaw() {
+        let p = UserProfile(biologicalSexRaw: "male")
+        #expect(p.sex == .male)
+        p.sex = .female
+        #expect(p.biologicalSexRaw == "female")
+        p.sex = .undisclosed
+        #expect(p.biologicalSexRaw == "")
+    }
+
+    @Test func summaryLineSkipsEmptyFields() {
+        let p = UserProfile(birthYear: 1990, biologicalSexRaw: "female", heightCM: 162)
+        let line = p.summaryLine
+        #expect(line.contains("岁"))
+        #expect(line.contains("女"))
+        #expect(line.contains("162cm"))
+        #expect(!line.contains("型"))  // 血型空,不出现
+    }
+
+    @Test func loadOrCreateReturnsExistingSingleton() throws {
+        let ctx = try makeContext()
+        let first = UserProfileStore.loadOrCreate(in: ctx)
+        first.birthYear = 1990
+        try ctx.save()
+
+        let second = UserProfileStore.loadOrCreate(in: ctx)
+        #expect(second.birthYear == 1990)
+
+        let all = try ctx.fetch(FetchDescriptor<UserProfile>())
+        #expect(all.count == 1)
+    }
+
+    @Test func arrayFieldsRoundtripThroughSwiftData() throws {
+        let ctx = try makeContext()
+        let p = UserProfile(
+            chronicConditions: ["高血压", "糖尿病"],
+            currentMedications: ["缬沙坦 80mg qd", "二甲双胍 500mg bid"]
+        )
+        ctx.insert(p)
+        try ctx.save()
+
+        let fetched = try #require(try ctx.fetch(FetchDescriptor<UserProfile>()).first)
+        #expect(fetched.chronicConditions == ["高血压", "糖尿病"])
+        #expect(fetched.currentMedications.count == 2)
+        #expect(fetched.currentMedications.first == "缬沙坦 80mg qd")
+    }
+}