feat(语音日记): DiaryAssistService.organize 转写稿整理

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

康康/Services/DiaryAssistService.swift

@@ -98,4 +98,29 @@ struct DiaryAssistService {
         guard !questions.isEmpty else { throw AssistError.empty }
         return (Array(questions.prefix(4)), lastRate)
     }
+
+    /// 把语音转写稿整理成健康日记草稿(spec 2026-06-10-voice-diary)。
+    /// 失败(模型未就绪 / 输出为空)抛错,调用方回退为直接使用原话,不卡死。
+    /// 与 suggest 同样走 AIRuntime actor 队列,自然与追问/拍照串行。
+    func organize(transcript: String) async throws -> (text: String, decodeRate: Double) {
+        do {
+            try await AIRuntime.shared.prepare()
+        } catch {
+            throw AssistError.modelNotReady
+        }
+
+        let prompt = DiaryAssistPrompts.organize(transcript: transcript)
+        var collected = ""
+        var lastRate: Double = 0
+        let stream = await AIRuntime.shared.generate(prompt: prompt, maxTokens: 400)
+        for try await chunk in stream {
+            collected += chunk.text
+            if chunk.decodeRate > 0 { lastRate = chunk.decodeRate }
+        }
+
+        let text = HealthExportService.stripThinkBlocks(collected)
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !text.isEmpty else { throw AssistError.empty }
+        return (text, lastRate)
+    }
 }