v1.2.3

New Features

• Live register contents in which-key HUD: The GET-REGISTER submap now shows live previews of all named, numbered, default, yank, and search registers (truncated to 40 chars).
• Stale-close watchdog for which-key render: A 40ms watchdog closes a stale HUD if the render token has advanced and the window has not changed, eliminating wrong-submap flashes.

Bug Fixes

• Fixed which-key HUD disappearing during rapid submap transitions. Replaced PID-based cancellation with a token-based self-cancellation model; added a retry loop for empty binds, focused-monitor caching, and earlier token validation.
• Removed which-key trigger from mark operations (M, Ctrl+M, ', `); which-key is now limited to operator-pending submaps only.
• Which-key show delay is now applied only to operator-pending submaps (D-MOTION, C-MOTION, Y-MOTION, G-MOTION, R-CHAR); all other submaps show instantly.