docs: audit and update changelog entries for v0.51.0..HEAD

packages/tui/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- Added `PI_DEBUG_REDRAW=1` env var for debugging full redraws (logs triggers to `~/.pi/agent/pi-debug.log`)
+
 ### Changed
 
 - Terminal height changes no longer trigger full redraws, reducing flicker on resize
@@ -9,6 +13,8 @@
 
 ### Fixed
 
+- Fixed emoji cursor positioning in Input component ([#1183](https://github.com/badlogic/pi-mono/pull/1183) by [@haoqixu](https://github.com/haoqixu))
+
 - Fixed unnecessary full redraws when appending many lines after content had previously shrunk (viewport check now uses actual previous content size instead of stale maximum)
 - Fixed Ctrl+D exit closing the parent SSH session due to stdin buffer race condition ([#1185](https://github.com/badlogic/pi-mono/issues/1185))