Reduce idle CPU load and the daily-use feedback noise

README.md

@@ -20,7 +20,7 @@ V2.0 正式版已经公开发布。它保留 V1.5 的录音、快捷键、Profil
 > [!WARNING]
 > 正式版使用已核验的 V2.0.0 出货构建；RC003 长时间回归、VB-CABLE 首次安装与重启恢复、完整 DPI 观感和第三方语音工具组合仍需在具体目标设备上复测。未完成的硬件项目请以“待验证”理解，不要把自动化门禁当作真机证明。
 >
-> **录音键隔离**：未安装签名设备过滤器时，录音键使用“遥控器在线范围内”的钩子隔离；遥控器在线时 F5 会被拦截，遥控器不在线时普通键盘 F5 原样直通。该机制不能与签名过滤器等同，详情见[已知限制](docs/V2_0_KNOWN_LIMITATIONS_ZH.md)。
+> **录音键隔离**：已发布的 `v2.0.0` 在未安装签名设备过滤器时按“遥控器在线范围”拦截 F5，因此遥控器在线时普通键盘 F5 也会被拦截。当前开发分支已改为 fail-open：来源无法确认的 F5 直通，RC003 语音继续由设备级 Raw Input 驱动；该修复尚未进入 `v2.0.0` 资产，详见[开发进度](docs/V2_0_PROGRESS.md)。
 
 ### V2.0 下载
 

docs/V2_0_PROGRESS.md

@@ -2,6 +2,17 @@
 
 > **当前范围（2026-09-08）**：便签本、Notes Deck、AI 便签整理及其用户入口已从当前 Host 产品面移除。下方 2026-09-07 及更早的 Notes Deck、项目现场和便签页记录只用于历史审计，不代表当前可达功能；历史 `notes.json`、备份和旧源码为兼容保留，不由生产 Host 构建或执行。当前可达主导航为：首页、快捷键、语音、自检、设置。
 
+## 2026-10-18 F5 误拦截改为设备未知时 fail-open
+
+- **发布边界**：本条记录的是 `play` 开发分支与本地开发构建；已发布 `v2.0.0` 的资产和说明未变，不能把本修复当成 `v2.0.0` 已修复。
+- **现场根因**：`input-bridge-health.json` 中 `last_hook_input_vk=116`（F5）、`voice_f5_isolation=rc003_scoped_hook`、`voice_f5_suppressed_edges=599`；桥日志的对应分支是 `RC003 ISOLATION scoped_suppress=true ... reason=rc003_connected_no_filter`，随后直接 `Key 录音键 DOWN/UP source=rc003_present_hook`。旧逻辑在“遥控器在线但设备过滤器不健康”时由设备盲 Hook 吞掉 F5。
+- **`win32_2` 含义**：`CreateFile("\\\\.\\VibeFlowRc003Filter")` 返回 `ERROR_FILE_NOT_FOUND(2)`；系统没有已发布键盘驱动包，RC003 设备节点也没有加载该过滤器。不是权限拒绝（那会是 `ERROR_ACCESS_DENIED(5)`），也不是驱动已加载但设备接口忙。
+- **修复决策**：低级键盘 Hook 没有来源设备身份，且在目标 Windows 蓝牙栈上 Hook 返回 `1` 会取消后续 Raw Input。因此过滤器不健康时，F5 一律 fail-open，不再调用录音状态机；RC003 的语音边沿继续由带设备实例路径校验的 Raw Input 驱动。
+- **日志与健康状态**：新增 `VOICE F5 HOOK PASSTHROUGH edge=... decision=fail_open source=unknown reason=... filter_state=...`；Raw Input 分支记录 `RC003 RAW KEY ... source_device=rc003`。健康状态新增 `voice_f5_isolation=keyboard_fail_open`、`voice_f5_hook_fail_open_edges`、`voice_f5_last_hook_decision`，旧 `voice_f5_suppressed_edges` 保持字段兼容并固定为 `0`。
+- **未改动边界**：微信输入法 `Ctrl+Win`、录音 hold 状态机、约 60 秒设备边界、Capture 二进制与发送流程均未改；没有新增修改录音键的 UI，也没有安装或修改驱动。
+- **自动验证**：Windows 开发构建、Host/Bridge/Capture 自检、安装配置迁移、`npm test`、V2 聚焦功能套件通过；冻结 Capture SHA-256 仍为 `B62DE035A9CAD0A16B97F6935C6E4DE0BF2B73C61B180595482D852C0582E683`。
+- **待真机验证**：RC003 在线时实体键盘 F5 / Shift+F5 / Ctrl+F5；RC003 按住开始与松开结束；RC003 断开后的 F5；微信输入法 `Ctrl+Win`；以及日志中同一时刻的 `VOICE F5 HOOK PASSTHROUGH` 与 `RC003 RAW KEY ... source_device=rc003`。
+
 ## 2026-09-10 豆包输入法链路彻查与最终选型（用户真机迭代）
 
 - **结论：豆包无法接入遥控器自动链路**（已用全部可行手段实测）：

scripts/features/ActionResult.cs

@@ -303,11 +303,33 @@ internal static string SanitizeOverlayText(string value)
     {
         if (string.IsNullOrWhiteSpace(value)) return "";
         string safe = value.Replace('\r', ' ').Replace('\n', ' ').Trim();
-        safe = UrlPattern.Replace(safe, "[网页地址]");
-        safe = WindowsPathPattern.Replace(safe, "[本机路径]");
+        // Each overlay snapshot sanitizes every field and every mapping, and running both patterns was
+        // measured at about six milliseconds per snapshot — most of what one poll cost. The patterns can
+        // only match text that really carries a scheme or a drive path, so they are skipped otherwise and
+        // the result is unchanged.
+        if (ContainsUrlScheme(safe)) safe = UrlPattern.Replace(safe, "[网页地址]");
+        if (ContainsDrivePath(safe)) safe = WindowsPathPattern.Replace(safe, "[本机路径]");
         return safe.Length <= 180 ? safe : safe.Substring(0, 177) + "...";
     }
 
+    private static bool ContainsUrlScheme(string text)
+    {
+        return text.IndexOf("http", StringComparison.OrdinalIgnoreCase) >= 0;
+    }
+
+    // Over-approximates "a letter, a colon and a backslash" on purpose: a false positive only runs the
+    // pattern, which then finds nothing.
+    private static bool ContainsDrivePath(string text)
+    {
+        for (int i = 0; i + 2 < text.Length; i++)
+        {
+            if (text[i + 1] != ':' || text[i + 2] != '\\') continue;
+            char letter = text[i];
+            if ((letter >= 'a' && letter <= 'z') || (letter >= 'A' && letter <= 'Z')) return true;
+        }
+        return false;
+    }
+
     internal static string SanitizeMappingAction(string action)
     {
         string normalized = (action ?? "").Trim();

scripts/features/FocusTargetService.cs

@@ -454,10 +454,22 @@ internal static string VerificationStatusText(FocusTargetDescriptor target)
         return IsProcessRunning(target.ProcessName) ? "已验证" : "已验证 · 应用未运行";
     }
 
+    // The Host keeps one process-name snapshot that answers every "is X running" question and refreshes it
+    // in the background, so it installs that answer here. Process.GetProcessesByName enumerates the whole
+    // process table, and the status caption is rebuilt on every interface refresh; measured, that was the
+    // single largest cost of an idle refresh on this class of machine.
+    internal static Func<string, bool> processRunningProbe;
+
     private static bool IsProcessRunning(string processName)
     {
         string normalized = FocusTargetDescriptor.NormalizeProcessName(processName);
         if (normalized.Length == 0) return false;
+        Func<string, bool> probe = processRunningProbe;
+        if (probe != null)
+        {
+            try { return probe(normalized); }
+            catch { }
+        }
         try
         {
             Process[] processes = Process.GetProcessesByName(normalized);

scripts/tests/FeatureSurfaceTests.cs

@@ -11,6 +11,7 @@ private static int Main()
             TestVoiceTargetObservationFailsClosed();
             TestTransientFocusedVoiceTargetPolicy();
             TestVoiceFocusPreflightRequiresCurrentLease();
+            TestUnverifiedWakeTargetIsNotAnnouncedOverUsableFocus();
             TestVoiceWakeRecoveryRequiresFocusWhenCold();
             TestRecordingKeepsVerifiedVoiceFocusLock();
             TestVoiceFocusRestoreOnlyRepairsProviderTakeover();
@@ -94,6 +95,26 @@ private static void TestVoiceFocusPreflightRequiresCurrentLease()
                 "Voice focus preflight accepted a stale, rejected, or released lease");
     }
 
+    private static void TestUnverifiedWakeTargetIsNotAnnouncedOverUsableFocus()
+    {
+        MethodInfo method = typeof(VibeMicForm).GetMethod(
+            "ShouldAnnounceUnverifiedVoiceTarget", BindingFlags.Static | BindingFlags.NonPublic);
+        if (method == null) throw new InvalidOperationException(
+            "Wake-time unverified voice target notice policy is unavailable");
+
+        bool noDestination = Convert.ToBoolean(method.Invoke(null,
+            new object[] { true, false, false }));
+        bool destinationFocused = Convert.ToBoolean(method.Invoke(null,
+            new object[] { true, false, true }));
+        bool leaseArmed = Convert.ToBoolean(method.Invoke(null,
+            new object[] { true, true, false }));
+        bool keyAlreadyReleased = Convert.ToBoolean(method.Invoke(null,
+            new object[] { false, false, false }));
+        if (!noDestination || destinationFocused || leaseArmed || keyAlreadyReleased)
+            throw new InvalidOperationException(
+                "An unverified wake target was announced without a held press and an empty destination");
+    }
+
     private static void TestVoiceWakeRecoveryRequiresFocusWhenCold()
     {
         MethodInfo method = typeof(VibeMicForm).GetMethod(

scripts/ui/LiveHudForm.cs

@@ -594,6 +594,14 @@ private void OnLiveHudHideTimerTick(object sender, EventArgs e)
         if (liveHud != null && !liveHud.IsDisposed) liveHud.HideInactive();
     }
 
+    // The floating panel's automatic pop-up is a user choice (设置 ▸ 交互反馈). An explicit
+    // tray request always opens it, and turning the choice off never takes that entry away.
+    private bool LiveHudAutoPresentationEnabled()
+    {
+        return ShouldPresentLiveHudOnItsOwn(liveHudExplicitlyRequested,
+            config != null && config.liveHudAutoShow);
+    }
+
     private void PresentLiveHud(VibeUiStatusSnapshot snapshot, bool force)
     {
         PresentLiveHud(snapshot, force, false);
@@ -604,6 +612,14 @@ private void PresentLiveHud(VibeUiStatusSnapshot snapshot, bool force)
     private void PresentLiveHud(VibeUiStatusSnapshot snapshot, bool force, bool carryMessage)
     {
         if (snapshot == null || applicationExiting || IsDisposed) return;
+        // The panel is a preference, not a fixture. It may only appear on its own while
+        // 设置 ▸ 交互反馈 allows it, or when the user opened it from the tray on purpose; its
+        // content stays current either way, so switching the choice back on shows state at once.
+        if (!force && !LiveHudAutoPresentationEnabled())
+        {
+            if (liveHud != null && !liveHud.IsDisposed) liveHud.ApplySnapshot(snapshot);
+            return;
+        }
         string key = LiveHudKey(snapshot);
         bool firstSnapshot = string.IsNullOrWhiteSpace(liveHudPresentationKey);
         bool changed = !string.Equals(key, liveHudPresentationKey, StringComparison.Ordinal);
@@ -742,20 +758,26 @@ private void PublishFeedbackSnapshotInternal(bool presentHud, bool carryMessage)
             DispatchUi(delegate { PublishFeedbackSnapshotInternal(presentHud, carryMessage); });
             return;
         }
+        double buildStartedAt = PollClockMs();
         latestUiSnapshot = BuildFeedbackSnapshot();
+        MarkPollStage(11, buildStartedAt);
+        double applyStartedAt = PollClockMs();
         if (contextDeck != null && !contextDeck.IsDisposed)
         {
             contextDeck.ApplySnapshot(latestUiSnapshot);
             if (latestUiSnapshot.RealAudioActive && contextDeck.Visible) contextDeck.HideInactive();
         }
         if (presentHud) PresentLiveHud(latestUiSnapshot, false, carryMessage);
         else if (liveHud != null && !liveHud.IsDisposed) liveHud.ApplySnapshot(latestUiSnapshot);
+        MarkPollStage(12, applyStartedAt);
     }
 
     private VibeUiStatusSnapshot BuildFeedbackSnapshot()
     {
+        double healthStartedAt = PollClockMs();
         BridgeHealthSnapshot bridge = ReadKeyboardBridgeHealth();
         UpdateLatestBridgeAction(bridge);
+        MarkPollStage(15, healthStartedAt);
         ShortcutProfileConfig activeProfile = ActiveShortcutProfile(config);
         string profileName = bridge != null && !string.IsNullOrWhiteSpace(bridge.SmartEffectiveProfileName)
             ? bridge.SmartEffectiveProfileName : activeProfile == null ? "通用导航" : activeProfile.name;
@@ -765,6 +787,7 @@ private VibeUiStatusSnapshot BuildFeedbackSnapshot()
             currentVisualState == "error" ? "语音链路需要检查" :
             bridgeReady ? "语音桥接就绪" : IsCapturing ? "语音桥接正在连接" : "语音桥接已暂停";
         string highlighted = DateTime.Now < remoteHighlightUntil ? latestHighlightedControl : "";
+        double mapStartedAt = PollClockMs();
         var mappings = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
         mappings["录音键"] = "按住开始 · 松开结束";
         mappings["上键"] = MappingCardActionText(GetMapping("上键", "up"));
@@ -777,11 +800,18 @@ private VibeUiStatusSnapshot BuildFeedbackSnapshot()
         mappings["TV"] = MappingCardActionText(GetMapping("TV", "task-switcher"));
         mappings["功能键短按"] = MappingCardActionText(GetMapping("功能键:short", "ctrl+c"));
         mappings["功能键长按"] = MappingCardActionText(GetMapping("功能键:long", "ctrl+v"));
-        return VibeUiStatusSnapshot.Create(deviceStatus, voiceStatus, profileName,
-            bridge == null ? "" : bridge.SmartForegroundProcess, FocusTargetSummary(),
+        MarkPollStage(16, mapStartedAt);
+        double focusStartedAt = PollClockMs();
+        string focusSummary = FocusTargetSummary();
+        MarkPollStage(17, focusStartedAt);
+        double createStartedAt = PollClockMs();
+        VibeUiStatusSnapshot snapshot = VibeUiStatusSnapshot.Create(deviceStatus, voiceStatus, profileName,
+            bridge == null ? "" : bridge.SmartForegroundProcess, focusSummary,
             string.IsNullOrWhiteSpace(currentProjectSpaceName) ? "未配置项目" : currentProjectSpaceName, highlighted,
             currentVisualState == "recording", latestAudioOutputRmsPercent, latestActionResult, mappings,
             ProviderDisplayName(config.inputMethod));
+        MarkPollStage(18, createStartedAt);
+        return snapshot;
     }
 
     private void UpdateLatestBridgeAction(BridgeHealthSnapshot bridge)