Merge remote-tracking branch 'origin/master' into claude/parental-control-feature-31dde2

# Conflicts:
#	apps/electron-backend/src/main.ts

.changes/electron-deferred-startup-wiring.md

@@ -0,0 +1,8 @@
+---
+type: perf
+area: electron
+---
+
+The desktop app now opens its window before it prepares the portal, program
+guide, download, player and update machinery, and does that preparation while
+the window is already loading, so the first screen appears sooner.

.changes/electron-startup-compile-cache.md

@@ -0,0 +1,9 @@
+---
+type: perf
+area: electron
+---
+
+The desktop app now keeps a compiled copy of its startup code next to its
+user data, so every launch after the first skips part of the JavaScript
+compilation and reaches the window a little sooner. Set
+`IPTVNATOR_DISABLE_COMPILE_CACHE=1` to turn this off.

.changes/xtream-category-selection-scroll.md

@@ -0,0 +1,6 @@
+---
+type: fix
+area: xtream
+---
+
+Selecting an Xtream category no longer scrolls the category panel to an unrelated category, including when categories are hidden or sorted alphabetically.