Release v0.4.0: add screen capture and annotation editor

Release/README.md

@@ -1,32 +1,31 @@
 # Latest Windows release
 
-## v0.3.0 — 2026-10-28
+## v0.4.0 — 2026-10-28
 
-- Move Settings and the snippet editor into the on-demand `KSwitcher.Config.exe` process.
-- Repeated launches activate the existing configurator. Closing its last window releases the process and its memory.
-- Apply settings immediately through validated IPC with the resident process; reject conflicting saves instead of overwriting newer settings.
-- Keep shortcut capture in the resident hook, with no extra global hooks in the configurator.
-- Support packaging, validation and rollback of both executables. About now displays the actual application version.
+- Capture a rectangular screen region with Win+Shift+S (configurable), with dimmed selection and independent editor windows.
+- Annotate screenshots with numbered markers, arrows, straight/freehand lines, highlights, rectangles, circles, ellipses and inline text.
+- Edit color, line style, arrowheads, thickness, font and size. Link arrow endpoints to markers and attach captions.
+- Captions follow line angle and keep their relative offset until manually rotated. Text rotation supports Shift snapping in 15-degree steps.
+- Move objects one pixel with arrow keys; clone with Ctrl+D; undo/redo edits. Numbered markers reuse gaps.
+- Compact Lucide toolbar, contextual status bar, pencil cursor and confirmation before discarding an uncopied screenshot. Escape no longer closes the editor.
+- Preserve the separate on-demand configurator and configurable capture shortcut.
 
-Verified: 170 native checks, 51 input/layout checks, 28 updater/metadata checks and 21 configurator process checks.
-A local before/after measurement after opening and closing Settings reduced resident working set from about 21.0 MiB to 14.7 MiB. Results vary; total memory is higher while the separate configurator is open.
+Verified: 173 native checks, 373 input/rendering checks, screenshot editor UI integration checks,
+28 updater checks and package validation using the unchanged v0.3.0 updater.
 
-**Upgrade from v0.2.3 or earlier: install this release manually once.** The old updater rejects the additional EXE.
-Exit KSwitcher, extract the entire ZIP into the installation folder, and retain `data/` and any customized dictionaries.
-Keep `KSwitcher.exe`, `KSwitcher.Config.exe` and `dictionaries/` together. Launch `KSwitcher.exe`.
-Subsequent updates support both executables through the tray Update menu.
+**Upgrade from v0.3.0:** use Update in the tray menu. Both executables are supported by that updater.
+**Upgrade from v0.2.3 or earlier:** install manually once because those updaters reject the additional configurator EXE.
+Exit KSwitcher and extract the entire ZIP into its installation folder. Keep personal `data/` and customized dictionaries.
 
-Download **KSwitcher-win-x64.zip**. The archive contains both applications, offline dictionaries,
-documentation and license notices. It does not contain personal settings or clipboard history.
-`SHA256SUMS.txt` contains the archive checksum.
+Download **KSwitcher-win-x64.zip** with **SHA256SUMS.txt**. The package contains both executables,
+offline dictionaries, documentation and license notices; no personal settings or clipboard history.
 
-This folder holds the latest compiled version; older versions remain in Git history and Releases.
-To refresh the tracked package from source:
+Build and package:
 
 ```powershell
 .\build.ps1 -Stage -Test
 .\package.ps1 -PublishRelease
 ```
 
-Commit the ZIP and checksum together with their source changes. Publish both files as assets of
-one stable release tagged with the executable version, so the updater can verify it.
+Commit the archive, checksum and sources together. Publish both assets on a stable release whose
+tag matches the executable version.