From 35f7c3822fdc3aff8c8cf519cd9c594a81152423 Mon Sep 17 00:00:00 2001
From: 3dtours <yeunhiepanh.photo@gmail.com>
Date: Wed, 5 Aug 2026 15:05:44 +0700
Subject: [PATCH] =?UTF-8?q?FIX:=20Piano=20roll=20tab=20kh=C3=B4ng=20xu?=
 =?UTF-8?q?=E1=BA=A5t=20=C3=A2m=20thanh=20qua=20mastering=20chain=20=C4=91?=
 =?UTF-8?q?=C6=B0=E1=BB=A3c=20recovery?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/static/js/app.jsx    | 5 ++++-
 app/templates/index.html | 2 +-
 wiki.md                  | 7 +++++++
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx
index 2260aa3..634957e 100644
--- a/app/static/js/app.jsx
+++ b/app/static/js/app.jsx
@@ -17825,7 +17825,10 @@ const App = () => {
           if ((isPianoRoll ? nanOut : (pk < 0.001 || nanOut))) {
             masterSilenceFramesRef.current++;
             const sinceRebuild = performance.now() - (lastMasterRebuildTimeRef.current || 0);
-            if (masterSilenceFramesRef.current > 45 && sinceRebuild > 3000) {
+            // NaN = chain CHẾT chắc chắn → rebuild NGAY (3 frame ≈ 50ms).
+            // pk<0.001 (im lặng nghi ngờ — main) giữ 45 frame (750ms) để loại
+            // transient gap false-positive. Cooldown 3000 chống rebuild-loop.
+            if (masterSilenceFramesRef.current > (nanOut ? 3 : 45) && sinceRebuild > 3000) {
               masterSilenceFramesRef.current = 0;
               lastMasterRebuildTimeRef.current = performance.now();
               console.warn('[Recovery] Master silent while sources active — rebuilding audio graph');
diff --git a/app/templates/index.html b/app/templates/index.html
index 9f0fe15..f644f26 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -24,7 +24,7 @@
     <script src="/static/js/services/midiExtractor.js?v=202607281052"></script>
     <script src="/static/js/services/promptTemplateManager.js?v=202607281039"></script>
     <script src="/static/js/services/undoRedoEngine.js?v=202607290941"></script>
-    <script src="/static/js/app.precompiled.js?v=202608060000" defer></script>
+    <script src="/static/js/app.precompiled.js?v=202608060030" defer></script>
     <link rel="stylesheet" href="/static/css/styles.css?v=202607271016">
     <style>
         :root {
diff --git a/wiki.md b/wiki.md
index eebf893..70dd8ba 100644
--- a/wiki.md
+++ b/wiki.md
@@ -1894,3 +1894,10 @@
 - **Kết hợp với v23:55 (dedupe swap):** dedupe ngăn state-bad (không recovery → không flat); sig-reset đảm bảo recovery (nếu có) cấu hình lại chain — 2 fix bổ trợ.
 - **Các file ảnh hưởng:** `app/static/js/app.jsx`, `app/templates/index.html` (?v=202608060000), `wiki.md`. Rebuild precompiled.
 - **Ghi chú/Test:** `npm run build` → hard refresh → bật mastering PWR → play piano roll 0:0 → KỲ VỌNG: âm qua mastering ĐẦY ĐỦ (EQ gain nghe rõ, maximizer boost, imager width) — chỉnh slider module → âm thay đổi ngay.
+
+### [2026-08-06 00:30] Task: Recovery NGAY khi NaN — fast-path 3 frame (~50ms) thay vì 45 frame (750ms)
+- **Câu hỏi user:** "khi quay lại 0:0 mastering recovery — tại sao delay 1.5s mà không recovery ngay?"
+- **Giải thích delay:** 2 ngưỡng cố ý: (1) 45 frame ≈ 750ms xác nhận im lặng THẬT (false-positive = stopAllPlayback + restart = glitch — thiết kế cho main session transient gap); (2) 3s cooldown chống rebuild-loop.
+- **Fix (app.jsx updatePlayhead):** `if (masterSilenceFramesRef.current > (nanOut ? 3 : 45) && sinceRebuild > 3000)` — **NaN (chain chết chắc chắn) → rebuild sau 3 frame ≈ 50ms** (gần như tức thì); pk<0.001 (main) giữ 45 frame. Cooldown 3000 giữ nguyên (chống loop nếu collapse deterministic).
+- **Các file ảnh hưởng:** `app/static/js/app.jsx`, `app/templates/index.html` (?v=202608060030), `wiki.md`. Rebuild precompiled.
+- **Ghi chú/Test:** `npm run build` → hard refresh → play 0:0 → nếu chain chết: âm hồi phục ~150ms (thay vì 1.5s).