diff --git a/main.js b/main.js
index f9bdbba..f851284 100644
--- a/main.js
+++ b/main.js
@@ -1,5 +1,5 @@
 "use strict";
-const { app, BrowserWindow, Tray, Menu, screen, ipcMain, nativeImage, shell, dialog } = require("electron");
+const { app, BrowserWindow, Tray, Menu, screen, ipcMain, nativeImage, shell, dialog, powerMonitor } = require("electron");
 const http = require("node:http");
 const fs = require("node:fs");
 const path = require("node:path");
@@ -69,6 +69,7 @@ const mouseDiag = {
   toggles: 0, lastToggleAt: null, polls: 0, lastPollAt: null,
   rel: null, inBox: false, inBubble: false,
   rendererErrors: 0, lastRendererError: null, dragEnds: [],
+  sessionEvents: [],   // 鎖定／解鎖／睡眠／喚醒
 };
 let currentState = { anim: "idle", base: "idle", sessions: 0 };
 
@@ -374,6 +375,25 @@ function reassertTopmost() {
   } catch { /* 視窗正在關閉就算了 */ }
 }
 
+// 鎖定／解鎖與睡眠喚醒：session 切換後 Windows 可能把視窗的輸入或 z-order 狀態弄掉，
+// 記下來並把目前的點穿狀態與置頂重新套用一次
+function watchSessionChanges() {
+  for (const ev of ["lock-screen", "unlock-screen", "suspend", "resume"]) {
+    powerMonitor.on(ev, () => {
+      appendLog(`power: ${ev}`);
+      mouseDiag.sessionEvents.push({ at: Date.now(), ev });
+      if (mouseDiag.sessionEvents.length > 10) mouseDiag.sessionEvents.shift();
+      if (ev !== "unlock-screen" && ev !== "resume") return;
+      if (!win || win.isDestroyed()) return;
+      try {
+        win.setIgnoreMouseEvents(ignoring, { forward: true });
+        win.showInactive();
+      } catch { /* 視窗正在關閉 */ }
+      reassertTopmost();
+    });
+  }
+}
+
 function startTopmostGuard() {
   topmostTimer = setInterval(reassertTopmost, TOPMOST_REASSERT_MS);
   // 螢幕配置變動最容易觸發降級，變動後立刻補一次
@@ -735,6 +755,7 @@ if (!app.requestSingleInstanceLock()) {
     startServer();
     startCursorPolling();
     startTopmostGuard();
+    watchSessionChanges();
     appendLog(`started pet=${activePet()?.id || "none"} scale=${config.scale} port=${config.port}`);
   });
 
diff --git a/package-lock.json b/package-lock.json
index 645446d..08ed285 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "claude-pet",
-  "version": "2.0.11",
+  "version": "2.0.12",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "claude-pet",
-      "version": "2.0.11",
+      "version": "2.0.12",
       "devDependencies": {
         "electron": "^43.4.1",
         "electron-builder": "^26.0.12"
diff --git a/package.json b/package.json
index f162348..e3bca0e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "claude-pet",
-  "version": "2.0.11",
+  "version": "2.0.12",
   "description": "Codex Pets 相容的 Claude Code 桌面寵物（spriteVersionNumber 2：9 個動作列 + 16 方向追視）",
   "main": "main.js",
   "private": true,
diff --git a/renderer/renderer.js b/renderer/renderer.js
index b069a39..e613d4e 100644
--- a/renderer/renderer.js
+++ b/renderer/renderer.js
@@ -518,7 +518,11 @@ function handleTest(p) {
 
 function report() {
   const base = baseState();
-  const snapshot = JSON.stringify({ anim: player.anim, base, sessions: sessions.size, pet: petInfo?.id || null });
+  const snapshot = JSON.stringify({
+    anim: player.anim, base, sessions: sessions.size, pet: petInfo?.id || null,
+    // renderer 這邊的滑鼠狀態也露到 /state，查「點不到寵物」時才看得出是不是卡在這裡
+    rendererMouse: { pressed: !!pressed, drag: !!drag, hovered, overlay: overlay?.anim || null },
+  });
   if (snapshot !== lastReported) {
     lastReported = snapshot;
     window.pet.send("pet:state", JSON.parse(snapshot));
@@ -650,6 +654,8 @@ function overPetArea(x, y) {
 function setHovered(on) {
   if (on === hovered) return;
   hovered = on;
+  log(`hover ${on ? "enter" : "leave"} pressed=${!!pressed} drag=${!!drag} overlay=${overlay?.anim || "-"}`);
+  report();
   if (on) {
     // 只在「進入」時觸發一次；一次性動作或拖曳進行中不打斷
     if (!overlay && !drag) {
@@ -689,15 +695,19 @@ document.addEventListener("mouseout", (e) => {
   setHovered(false);
 });
 
+// 滑鼠按下／放開都寫進事件紀錄：這是「有沒有收到滑鼠事件」唯一的直接證據
 window.addEventListener("mousedown", (e) => {
+  log(`mousedown b=${e.button} at ${e.clientX},${e.clientY} pressed=${!!pressed} drag=${!!drag}`);
   if (e.button === 0) {
     pressed = { x: e.clientX, y: e.clientY, sx: e.screenX, sy: e.screenY, moved: false };
   } else if (e.button === 2) {
     window.pet.send("pet:context-menu");
   }
+  report();
 });
 
 window.addEventListener("mouseup", (e) => {
+  log(`mouseup b=${e.button} at ${e.clientX},${e.clientY} pressed=${!!pressed} moved=${!!pressed?.moved}`);
   if (e.button !== 0 || !pressed) return;
   const wasDrag = pressed.moved;
   pressed = null;
@@ -728,6 +738,7 @@ window.pet.on("pet:drag-ended", () => {
   pressed = null;
   drag = null;
   canvas.classList.remove("grabbing");
+  report();
 });
 
 // 主程序切了點穿狀態：只負責換游標樣式