directvt/vtm v2026.06.26 on GitHub

This release is not backward compatible.
Replace the following key bindings on Unix-like platforms:
- Alt+Z -> Esc+F1 (FocusTaskbar)
- Alt+Shift+B -> Ctrl-Alt (ExclusiveKeyboardMode in terminal)

Implement layout-agnostic keyboard input #943:
- Introduce the Abstract Latin Layout "ALL" (evoking "All", tracking 309 unique physical keys normalized from 87 distinct keyboard layouts): Decouple physical key codes from national layouts, ensuring consistent runtime behavior across different language inputs.
- Implement the Win32Api/KKP -> ALL mapping pipeline (ALL -> KKP generation is forthcoming).
Rename LeftWin/RightWin modifier keys to LeftSuper/RightSuper.
Decouple AltGr from RightAlt globally (they are no longer treated as equivalent).
Fix RightCtrl/RightAlt translation anomalies on Canadian and Korean layouts.
Respect AltGr and IsoLevel5Shift (GroupSelect on Canadian layouts) states when evaluating key chords.
Add a workaround for the RightAlt extended-key flag bug in native Win32 console API reports.
Filter out and exclude Shift, AltGr, and Level5Shift modifier keys from literal chord sequences.
Fix Pause, Break, PrintScreen, and SysRq press/release transaction emulation.
Fix invalid key-chord states (prevent stuck keys when an IME is active).
Fix an infinite loop triggered when synchronizing empty grapheme cluster lists (mitigate fake jumbo clusters on malformed UTF-8 output).
Implement a dead-key preview mechanism in the built-in terminal.
Configure LunaSVG and STB to be fetched automatically via CMake if not found in the system #944.