Q1View v2.7.2

Viewer: Esc now exits full-screen mode from the frame or any child control, while Return still toggles full screen. (issue #82)
Viewer: the thumbnail drawer now starts closed on every launch, preserving the classic Viewer startup layout while still remembering the drawer width.
Viewer: when focus is in the thumbnail drawer, PgUp/PgDn move to the previous/next file instead of duplicating Home/End; Home/End still jump to the first/last item. (issue #84)

Viewer: full-screen enter/exit no longer shows stale transition frames, including corner flashes, classic-looking frames, or cropped full-screen content in the restored window. (issue #86)
Viewer: dragging the thumbnail drawer divider now resizes panes live, clamps cleanly at both limits, and avoids the old XOR ghost-bar flicker. (issue #85)
Viewer: gallery grid resizing with Ctrl+wheel no longer jolts when the vertical scrollbar appears or disappears.
Viewer: opening the thumbnail drawer scrolls the current image into view and no longer flickers the menu bar or churns thumbnail tile sizes while sliding.
Viewer: the thumbnail drawer now lists the same files in the same order as main PgUp/PgDn navigation, including video thumbnails and extension badges for non-image files. (issue #84)
Viewer: after End or a large gallery-grid scroll, newly visible thumbnails now decode instead of staying blank.

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