* test: add input transparency conformance harness
* test: cover split host replies in input conformance harness
* fix: let libghostty encode every key sent to panes
* refactor: read live keyboard modes only from libghostty
* fix: wait for split input sequences instead of typing their fragments
* refactor: drop unused keyboard protocol argument from pane key encoding
* test: fix windows-only keyboard mode tests after libghostty mode refactor
* test: measure windows key record transparency against the keyboard layout
* fix: forward windows punctuation and altgr chords that produce no character
* test: expect libghostty kitty encoding in the windows conpty probe and cover release, alternate, text and modifyOtherKeys passthrough
* ci: lint windows-only test code in the cross-platform windows check
* refactor: delete herdr's own key encoder
* test: expect xterm modifyOtherKeys 2 encoding for shifted letters in the windows gauntlet
* refactor: read windows input through one native console reader
* refactor: parse sgr mouse reports once and map pixel reports without rewriting them
* refactor: decode framed input once instead of re-framing it in the client
* fix: keep macos alt, non-us kitty keys, text releases and reply-tail recovery correct after the libghostty switch
* fix: stop waiting for host replies the terminal never sends
* fix: deliver shifted punctuation releases after shift is let go
* fix: never type super, hyper or meta chords into panes that cannot read them
refs #4356
* test: replay reporter captures for fixed split-read and key-release issues
refs #4856
refs #4025
refs #4184
* fix: forward f1, f2 and f4 from kitty keyboard hosts
refs #4403
* fix: send pixel mouse reports to unfocused panes and only when the host supports them
refs #4750
* fix: treat 0x08 as backspace when the terminal's erase key is ctrl+h
refs #3244
* test: fix macos lint and keep the pixel mouse server test unix-only
* fix: deliver legacy alt+escape on macos instead of dropping it
* fix: address review findings on super+enter, held key releases and the pixel mouse probe
* test: expect super+enter to stay out of plain windows panes
* test: wait for the host pixel mouse mode instead of reading the channel once
* fix: send ctrl+shift+letter to plain shells as its control byte
* fix: encode each key under one keyboard mode snapshot
* fix: keep ime text intact and stop inventing key releases for committed text
* fix: release held key reports on focus loss and never drop held-key leases
* fix: send ctrl chords on non-latin layouts as their physical key
* fix: match non-latin ctrl chord releases after ctrl is let go
* fix: drop super chords before the windows conpty fallback in plain panes
* fix: report partial Windows input coverage and clear clipboard for tests
* fix: require evidence from each Windows input channel
* fix: reject clipboard format count errors