feat(语音日记): organize prompt(自适应样式 + 数值不可改红线)

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

康康Tests/DiaryOrganizePromptTests.swift

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+import Testing
+@testable import 康康
+
+struct DiaryOrganizePromptTests {
+    @Test func organizePromptContainsTranscriptAndHardRules() {
+        let prompt = DiaryAssistPrompts.organize(transcript: "今天早上头晕量了血压140 90")
+
+        #expect(prompt.contains("今天早上头晕量了血压140 90"))
+        // 健康数据红线:数值/单位/药名/时间不许改,必须写进 prompt
+        #expect(prompt.contains("数值"))
+        #expect(prompt.contains("药名"))
+        // 自适应样式两条规则都在
+        #expect(prompt.contains("一段通顺的话"))
+        #expect(prompt.contains("分行"))
+        // 项目 prompt 规范:禁思考标签
+        #expect(prompt.contains("/no_think"))
+    }
+
+    @Test func organizePromptTruncatesLongTranscript() {
+        let long = String(repeating: "头晕", count: 2000)   // 4000 字符,超过上限
+        let prompt = DiaryAssistPrompts.organize(transcript: long)
+
+        // 整条 prompt 里口述部分被截断到 organizeTranscriptLimit
+        let expectedTail = String(long.prefix(DiaryAssistPrompts.organizeTranscriptLimit))
+        #expect(prompt.contains(expectedTail))
+        #expect(!prompt.contains(String(long.prefix(DiaryAssistPrompts.organizeTranscriptLimit + 2))))
+    }
+}