缺少代码差异信息，无法生成具体的commit message。

请提供 "code differences" 的具体内容，以便我能够根据代码变更情况生成符合 Angular 规范的中文 commit message。

康康/Features/Trends/SeriesBucket.swift

@@ -2,6 +2,11 @@ import SwiftUI
 import SwiftData
 import Foundation
 
+/// 趋势桶的来源类别。
+/// - `.monitor`:长期监测预设 / 自定义 / 血压(按 seriesKey 分组)。
+/// - `.lab`:任意出现 ≥2 次的化验/手动/报告指标(按 name+unit 分组,无 seriesKey)。
+enum SeriesKind { case monitor, lab }
+
 /// 长期监测系列在 Trends 折线图里的展示桶。
 /// 单系列(血糖/体重/...)= 1 个 SeriesLine;血压特殊 = 收缩 + 舒张 2 条线同卡。
 struct SeriesBucket: Identifiable {
@@ -10,6 +15,7 @@ struct SeriesBucket: Identifiable {
     let unit: String
     let lines: [SeriesLine]
     let latestDate: Date
+    let kind: SeriesKind
 
     struct SeriesLine: Identifiable {
         let id: String
@@ -68,9 +74,79 @@ extension SeriesBucket {
             }
         }
 
+        // —— lab 段:任何没有 seriesKey 的指标,按 name+unit 归并;同名出现 ≥minPoints 次即成趋势。
+        var labBuckets: [String: [Indicator]] = [:]
+        for i in indicators {
+            if let key = i.seriesKey, !key.isEmpty { continue } // seriesKey 指标只进 monitor 段
+            let nk = normalizedKey(name: i.name, unit: i.unit)
+            guard !nk.isEmpty else { continue }
+            labBuckets[nk, default: []].append(i)
+        }
+        for (_, items) in labBuckets {
+            guard items.count >= minPoints else { continue }
+            if let bucket = buildLab(items: items) {
+                results.append(bucket)
+            }
+        }
+
         return results.sorted { $0.latestDate > $1.latestDate }
     }
 
+    /// name+unit 归一化:trim + 小写 + 折叠内部空白。空名返回空串(调用方跳过)。
+    static func normalizedKey(name: String, unit: String) -> String {
+        func norm(_ s: String) -> String {
+            s.trimmingCharacters(in: .whitespacesAndNewlines)
+                .lowercased()
+                .components(separatedBy: .whitespacesAndNewlines)
+                .filter { !$0.isEmpty }
+                .joined(separator: " ")
+        }
+        let n = norm(name)
+        guard !n.isEmpty else { return "" }
+        return n + "|" + norm(unit)
+    }
+
+    /// 解析参考范围字符串 → ClosedRange。支持 "3.9-6.1" / "3.9~6.1" / "3.9 - 6.1"。
+    /// 单边("<5.2" / ">40" / "≤120")暂返回 nil(图不画带,正常)。
+    static func parseRange(_ raw: String) -> ClosedRange<Double>? {
+        let s = raw.replacingOccurrences(of: "～", with: "~")
+                   .replacingOccurrences(of: "~", with: "-")
+        guard let regex = try? NSRegularExpression(
+            pattern: #"(\d+(?:\.\d+)?)\s*-\s*(\d+(?:\.\d+)?)"#
+        ) else { return nil }
+        let range = NSRange(s.startIndex..<s.endIndex, in: s)
+        guard let m = regex.firstMatch(in: s, range: range),
+              let r1 = Range(m.range(at: 1), in: s),
+              let r2 = Range(m.range(at: 2), in: s),
+              let lo = Double(s[r1]), let hi = Double(s[r2]),
+              lo <= hi else { return nil }
+        return lo...hi
+    }
+
+    private static func buildLab(items: [Indicator]) -> SeriesBucket? {
+        let sorted = items.sorted { $0.capturedAt < $1.capturedAt }
+        guard let latest = sorted.last else { return nil }
+        let points = sorted.compactMap { point(from: $0) }
+        guard points.count >= 2 else { return nil } // 值无法解析为数字的会被丢弃,可能不足 2 点
+
+        let line = SeriesLine(
+            id: "lab:\(latest.name)",
+            seriesKey: "lab:\(latest.name)",
+            label: nil,
+            color: Tj.Palette.ink,
+            points: points,
+            referenceRange: parseRange(latest.range)
+        )
+        return SeriesBucket(
+            id: "lab:\(normalizedKey(name: latest.name, unit: latest.unit))",
+            title: latest.name,
+            unit: latest.unit,
+            lines: [line],
+            latestDate: latest.capturedAt,
+            kind: .lab
+        )
+    }
+
     private static func buildSingle(key: String,
                                     items: [Indicator],
                                     profile: UserProfile?,
@@ -106,7 +182,8 @@ extension SeriesBucket {
             title: title,
             unit: unit,
             lines: [line],
-            latestDate: latest.capturedAt
+            latestDate: latest.capturedAt,
+            kind: .monitor
         )
     }
 
@@ -148,7 +225,8 @@ extension SeriesBucket {
             title: String(appLoc: "血压"),
             unit: "mmHg",
             lines: lines,
-            latestDate: latest
+            latestDate: latest,
+            kind: .monitor
         )
     }