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/MonitorMetricTests.swift

@@ -0,0 +1,84 @@
+import Testing
+import Foundation
+@testable import 康康
+
+@MainActor
+struct MonitorMetricTests {
+
+    @Test func allMetricsHaveAtLeastOneField() {
+        for m in MonitorMetric.allCases {
+            #expect(!m.fields.isEmpty, "metric \(m.rawValue) has no fields")
+        }
+    }
+
+    @Test func bloodPressureHasTwoFields() {
+        let bp = MonitorMetric.bloodPressure
+        #expect(bp.fields.count == 2)
+        #expect(bp.fields[0].seriesKey == "bp.systolic")
+        #expect(bp.fields[1].seriesKey == "bp.diastolic")
+    }
+
+    @Test func statusHighWhenValueAboveRange() {
+        let s = MonitorMetric.status(value: 150, in: 90...140)
+        #expect(s == .high)
+    }
+
+    @Test func statusLowWhenValueBelowRange() {
+        let s = MonitorMetric.status(value: 80, in: 90...140)
+        #expect(s == .low)
+    }
+
+    @Test func statusNormalWhenValueInside() {
+        let s = MonitorMetric.status(value: 120, in: 90...140)
+        #expect(s == .normal)
+    }
+
+    @Test func statusNormalWhenRangeIsNil() {
+        let s = MonitorMetric.status(value: 999, in: nil)
+        #expect(s == .normal)
+    }
+
+    @Test func systolicUpperBoundShiftsForElderly() {
+        let bp = MonitorMetric.bloodPressure
+        let systolic = bp.fields[0]
+        let elderly = UserProfile(birthYear: 1955)  // 71 岁
+        let range = bp.effectiveRange(for: systolic, profile: elderly)
+        #expect(range == 90...150)
+    }
+
+    @Test func systolicUpperBoundUnchangedForYoungAdult() {
+        let bp = MonitorMetric.bloodPressure
+        let systolic = bp.fields[0]
+        let young = UserProfile(birthYear: 1990)
+        let range = bp.effectiveRange(for: systolic, profile: young)
+        #expect(range == 90...140)
+    }
+
+    @Test func systolicUpperBoundUnchangedWhenProfileNil() {
+        let bp = MonitorMetric.bloodPressure
+        let systolic = bp.fields[0]
+        let range = bp.effectiveRange(for: systolic, profile: nil)
+        #expect(range == 90...140)
+    }
+
+    @Test func glucoseUnaffectedByAge() {
+        let g = MonitorMetric.fastingGlucose
+        let field = g.fields[0]
+        let elderly = UserProfile(birthYear: 1940)
+        #expect(g.effectiveRange(for: field, profile: elderly) == field.baseRange)
+    }
+
+    @Test func isRangePersonalizedTrueForElderlySystolic() {
+        let bp = MonitorMetric.bloodPressure
+        let systolic = bp.fields[0]
+        let elderly = UserProfile(birthYear: 1955)
+        #expect(bp.isRangePersonalized(for: systolic, profile: elderly) == true)
+    }
+
+    @Test func isRangePersonalizedFalseForYoungProfile() {
+        let bp = MonitorMetric.bloodPressure
+        let systolic = bp.fields[0]
+        let young = UserProfile(birthYear: 1995)
+        #expect(bp.isRangePersonalized(for: systolic, profile: young) == false)
+    }
+}