Release 3.8.2.5: cheaper idle UI poll and tighter hot paths.

Delta getState by rev, pause when hidden, cancellable background loops,
hostCache bounds, unlock PollUI around engine status, corebin singleflight,
PingAll worker pool.

Co-authored-by: Cursor <cursoragent@cursor.com>

dist/navis-release/update.json

@@ -1,16 +1,16 @@
 {
   "version": "3.8.2",
-  "notes": "Navis 3.8.2+4: единый GUI Windows/macOS на glaze + HTTP /api (вместо WebView2 Bind); автоинкремент номера сборки при compile; артефакты Windows с версией в имени (Navis-x.y.z.b.exe).",
+  "notes": "Navis 3.8.2+5: delta-poll UI (getState по rev, без полного JSON если без изменений); пауза опроса при скрытом окне; cancel lifecycle dock/watchdog; invalidate/лимит hostCache; PollUI без lock на Engine.Running; singleflight corebin; PingAll worker-pool.",
   "platform": "windows-amd64",
   "os": "windows",
   "arch": "amd64",
   "url": "https://git.evilfox.cc/test2/navi/raw/branch/main/dist/navis-release/Navis.exe",
-  "sha256": "d3c1ff19f14de16768680770391b9d5565e13508890f48f0c19e087ada94e9d9",
+  "sha256": "68ce68b36f5027ef222b7aca2c74fc8529b852ea3f5e7cc7c1cdd71c5162a7b6",
   "mandatory": false,
   "platforms": {
     "windows-amd64": {
       "url": "https://git.evilfox.cc/test2/navi/raw/branch/main/dist/navis-release/Navis.exe",
-      "sha256": "d3c1ff19f14de16768680770391b9d5565e13508890f48f0c19e087ada94e9d9",
+      "sha256": "68ce68b36f5027ef222b7aca2c74fc8529b852ea3f5e7cc7c1cdd71c5162a7b6",
       "os": "windows",
       "arch": "amd64"
     },