* fix(app): preserve native composer input semantics
Native text was round-tripped through application state on every keystroke, which could overwrite an input method's in-flight edits. Keep native text ownership inside the input and reserve application-driven replacement for explicit draft mutations.\n\nRoute native clipboard images through the existing persisted attachment pipeline so keyboard and system paste actions behave like other image sources.
* fix(nix): refresh dependency hash
The native composer dependency changes the fixed npm dependency closure used by desktop builds.
* fix(app): keep composer locked across image pastes
Count concurrent native image persistence operations so submit remains disabled until every pasted image is attached.
* fix(app): replace composer text through the DOM on web
Web TextInput refs are DOM elements, so application-driven draft replacement must update their value and selection without native setNativeProps.
* fix(app): preserve web IME composition
Carry the Chinese IME fix from #2990 into the web composer input boundary.
Co-authored-by: Jimmy Lee <jimersylee+github@gmail.com>
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Co-authored-by: Jimmy Lee <jimersylee+github@gmail.com>
