Add double-click resets to the voice settings

CURRENT.md

@@ -40,6 +40,16 @@ mobile draft at 390px.
   - [x] C11 preview caching: Discord-hosted image/GIF previews (WebP 320px, hash-addressed, 5 MiB
     cap, one attempt) run after every walk in both modes. Live run `...-20260916090722`:
     `previewed: 2`; thumbs served over `/api/media/<scrape>/<item>/thumb` (200).
+  - [x] C82 Double-click resets in the voice settings. Every slider in the TTS panel resets on
+    double-click: the voice-character profile sliders (to the engine default from the voice list),
+    expression (default, and the override is truly cleared so the label reads `default`), speed
+    (1), pitch (0), volume (100), highpass (40), echo (off), and word gap (120 ms). Hints say so:
+    "within 2 snaps to default · double-click a slider to reset it" in Voice character and
+    "VOX / HEV · double-click resets" in Radio kit, plus a title on the profile sliders. Also
+    fixed: the speech status and preferences now load at startup (`refreshAudio()`), so the panel
+    and settings show real values before the first open — the profile defaults were empty until
+    then, which would have made the profile reset do nothing. Verified in a browser; the UI smoke
+    test passes.
   - [x] C81 remchild discovery and heartbeat-miss notices. The server answers UDP probes on 8798
     and beacons `{type,name,port,id}` to every interface broadcast; `remchild` with no `--server`
     probes for 5 s, auto-connects on one answer, shows a pick list on several, and falls back to

poc/public/app.js

@@ -2044,15 +2044,19 @@ async function saveSpeech(extra = {}) {
     const speed = Number($("#tts-speed").value);
     const pitch = Number($("#tts-pitch").value);
     const expressionEl = $("#tts-expression");
+    // A double-click reset clears the override: it must not be resent as a number.
     const expression =
-        expressionEl.dataset.dirty === "1" || typeof state.speech.expression === "number"
-            ? Number(expressionEl.value)
-            : null;
+        expressionEl.dataset.reset === "1"
+            ? null
+            : expressionEl.dataset.dirty === "1" || typeof state.speech.expression === "number"
+              ? Number(expressionEl.value)
+              : null;
 
     try {
         const prefs = await VK.api.post("/api/preferences", {
             tts: { provider, language, voice, speed, pitch, expression, ...effectOptions(), ...extra }
         });
+        delete expressionEl.dataset.reset;
         state.speech = prefs.tts ?? {
             provider: null,
             language: null,
@@ -2141,6 +2145,7 @@ function buildProfileSliders() {
         const slider = el("input", { type: "range", min: String(min), max: String(max), step: "1" });
         slider.id = `tts-profile-${key}`;
         slider.dataset.key = key;
+        slider.title = "Double-click to reset to the engine default";
         const value = el("span", { class: "vk-mono vk-dim", text: "default" });
 
         root.append(
@@ -2167,6 +2172,15 @@ function buildProfileSliders() {
             }
         });
         slider.addEventListener("change", () => void saveSpeech());
+        slider.addEventListener("dblclick", () => {
+            const engineDefault = state.profileDefaults?.[key];
+            if (typeof engineDefault !== "number") return;
+
+            slider.value = engineDefault;
+            slider.dataset.dirty = "";
+            value.textContent = "default";
+            void saveSpeech();
+        });
     }
 }
 
@@ -2980,6 +2994,11 @@ function init() {
     for (const id of ["tts-speed", "tts-pitch"]) {
         $(`#${id}`).addEventListener("input", syncSpeechSliderLabels);
         $(`#${id}`).addEventListener("change", () => void saveSpeech());
+        $(`#${id}`).addEventListener("dblclick", () => {
+            $(`#${id}`).value = id === "tts-speed" ? "1" : "0";
+            syncSpeechSliderLabels();
+            void saveSpeech();
+        });
     }
     $("#tts-expression").addEventListener("input", () => {
         const slider = $("#tts-expression");
@@ -2996,15 +3015,34 @@ function init() {
         syncSpeechSliderLabels();
     });
     $("#tts-expression").addEventListener("change", () => void saveSpeech());
+    $("#tts-expression").addEventListener("dblclick", () => {
+        const slider = $("#tts-expression");
+        const engineDefault = state.expressionDefault;
+        if (typeof engineDefault !== "number") return;
+
+        slider.value = engineDefault;
+        slider.dataset.dirty = "";
+        slider.dataset.stored = "0";
+        slider.dataset.reset = "1";
+        syncSpeechSliderLabels();
+        void saveSpeech();
+    });
     buildProfileSliders();
-    for (const id of ["tts-highpass", "tts-echo", "tts-word-gap", "tts-volume"]) {
-        $(`#${id}`).addEventListener("input", () => {
-            $("#tts-highpass-value").textContent = `${$("#tts-highpass").value}Hz`;
-            $("#tts-echo-value").textContent = Number($("#tts-echo").value) > 0 ? $("#tts-echo").value : "off";
-            $("#tts-word-gap-value").textContent = `${$("#tts-word-gap").value}ms`;
-            $("#tts-volume-value").textContent = `${Number($("#tts-volume").value)}%`;
-        });
+    const radioDefaults = { "tts-highpass": 40, "tts-echo": 0, "tts-word-gap": 120, "tts-volume": 100 };
+    const syncRadioLabels = () => {
+        $("#tts-highpass-value").textContent = `${$("#tts-highpass").value}Hz`;
+        $("#tts-echo-value").textContent = Number($("#tts-echo").value) > 0 ? $("#tts-echo").value : "off";
+        $("#tts-word-gap-value").textContent = `${$("#tts-word-gap").value}ms`;
+        $("#tts-volume-value").textContent = `${Number($("#tts-volume").value)}%`;
+    };
+    for (const id of Object.keys(radioDefaults)) {
+        $(`#${id}`).addEventListener("input", syncRadioLabels);
         $(`#${id}`).addEventListener("change", () => void saveSpeech());
+        $(`#${id}`).addEventListener("dblclick", () => {
+            $(`#${id}`).value = String(radioDefaults[id]);
+            syncRadioLabels();
+            void saveSpeech();
+        });
     }
     $("#tts-words").addEventListener("change", () => void saveSpeech());
     $("#tts-vox-clean").addEventListener("change", () => void saveSpeech());
@@ -3246,6 +3284,9 @@ function init() {
     renderRightFavourites();
 
     void refreshAll();
+    // The speech status and preferences feed the TTS panel and the settings
+    // overlay, so load them at startup instead of on the first panel open.
+    void refreshAudio();
     void refreshHealth();
     syncTtsControls();
 

poc/public/index.html

@@ -568,7 +568,7 @@
                     <section class="vk-profile-section">
                         <div class="vk-section-head">
                             <span class="vk-rail-label vk-rail-label-flat">Voice character</span>
-                            <span class="vk-mono vk-dim">within 2 of the engine default snaps to default</span>
+                            <span class="vk-mono vk-dim">within 2 snaps to default · double-click a slider to reset it</span>
                         </div>
                         <div id="tts-profile-sliders" class="vk-profile-grid"></div>
                         <div class="vk-profile-row">
@@ -593,7 +593,7 @@
                     <section class="vk-profile-section">
                         <div class="vk-section-head">
                             <span class="vk-rail-label vk-rail-label-flat">Radio kit</span>
-                            <span class="vk-mono vk-dim">VOX / HEV</span>
+                            <span class="vk-mono vk-dim">VOX / HEV · double-click resets</span>
                         </div>
                         <div class="vk-profile-row">
                             <span class="vk-micro-label">highpass</span>