Prepare v2.6.0 release

Move the Unreleased changelog items into the 2.6.0 section and update the
compare links. Note the resizable thumbnail drawer in the Store listing
description and feature list.

Author: chammoru

CHANGELOG.md

@@ -6,6 +6,10 @@ All notable changes to Q1View are documented here. Releases follow [semantic ver
 
 ## [Unreleased]
 
+---
+
+## [2.6.0] — 2026-06-17
+
 ### Added
 - Viewer: the thumbnail drawer is now resizable — drag the divider between the drawer and the image to widen it (handy for reading long file names) or narrow it. The drawer always lives inside the fixed window, so dragging the divider, or opening and closing the drawer, resizes the image area to fit and never changes the outer window size; the chosen width is remembered across sessions. The MFC and Qt viewers now share one drawer width default (and min/max) and behave identically — previously the MFC drawer could not be resized at all and grew the window when opened.
 
@@ -238,7 +242,8 @@ All notable changes to Q1View are documented here. Releases follow [semantic ver
 
 ---
 
-[Unreleased]: https://github.com/chammoru/Q1View/compare/v2.5.0...HEAD
+[Unreleased]: https://github.com/chammoru/Q1View/compare/v2.6.0...HEAD
+[2.6.0]: https://github.com/chammoru/Q1View/compare/v2.5.0...v2.6.0
 [2.5.0]: https://github.com/chammoru/Q1View/compare/v2.4.4...v2.5.0
 [2.4.4]: https://github.com/chammoru/Q1View/compare/v2.4.3...v2.4.4
 [2.4.3]: https://github.com/chammoru/Q1View/compare/v2.4.2...v2.4.3

docs/STORE_LISTING.md

@@ -37,7 +37,7 @@ For raw YUV sources, Viewer can show native Y, U, and V values sampled directly
 
 Raw input can be reinterpreted quickly without reopening the file. Press N to cycle color spaces and D to cycle preset resolutions. This is useful when debugging raw YUV/RGB dumps whose format, size, or color interpretation must be checked quickly.
 
-Viewer also supports image-sequence navigation, video playback, frame/time progress display, clipboard paste, screen capture, and a thumbnail browser for browsing the current folder. Open multiple Viewer windows and enable Sync Input to keep navigation, zoom, pan, rotation, playback, and display settings synchronized across them.
+Viewer also supports image-sequence navigation, video playback, frame/time progress display, clipboard paste, screen capture, and a resizable thumbnail browser for browsing the current folder (drag the divider to widen it for long file names without changing the window size). Open multiple Viewer windows and enable Sync Input to keep navigation, zoom, pan, rotation, playback, and display settings synchronized across them.
 
 COMPARATOR
 
@@ -99,6 +99,7 @@ TECHNICAL NOTES
 15. Allow Different Resolution mode for cross-resolution comparisons
 16. Portable ZIP available alongside the installer
 17. Cycle raw color space (N) and preset resolutions (D) without reopening the file
+18. Resizable thumbnail drawer — drag the divider to read long file names without changing the window size
 ```
 
 ---