test(语音日记): 端侧识别可用性探测冒烟测试(模拟器降级路径)

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

康康Tests/SpeechDictationAvailabilityTests.swift

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+import Testing
+@testable import 康康
+
+struct SpeechDictationAvailabilityTests {
+    /// 模拟器冒烟:isAvailable 的探测路径(SFSpeechRecognizer 构造 + supportsOnDeviceRecognition)
+    /// 不许崩溃、不许卡死;模拟器多为 false(mic 按钮隐藏),个别 Xcode/macOS 组合为 true 也合法,
+    /// 所以只断言「可重复调用且结果稳定」,不断言具体值。
+    @Test func isAvailableProbeIsStableAndDoesNotCrash() {
+        let first = SpeechDictationService.isAvailable
+        let second = SpeechDictationService.isAvailable
+        #expect(first == second)
+    }
+}