The auto-restore merge reintroduced the spacing bug: on every flush char
the engine re-emitted a Replace and the daemon backspaced+retyped the
already-on-screen composed word, racing against the separately-forwarded
flush char and eating spaces (mất sự->mấtsự, đầu ngã xuống->đầungãxuống).
Now flush only backspaces+retypes when auto-restore actually changes the
word (English/invalid Vietnamese -> raw keystrokes). For a normal composed
word the engine returns None and the daemon types only the flush char,
leaving the correct word untouched on screen.
Co-Authored-By: vndangkhoa <vonguyendangkhoa@gmail.com>
When Vietnamese mode is on, the engine transformed every word including
English (test->tét, cargo->cảgo, status->státu). This wires up the
previously-dead english.rs dictionary and spelling.rs validator so that on
word commit, words that are clearly English or not phonologically valid
Vietnamese are reverted to the raw keystrokes typed. Genuine Vietnamese
(tiếng, việt, quả) is kept. Gated by the existing [auto_restore] enabled
config (default on).
Co-Authored-By: vndangkhoa <vonguyendangkhoa@gmail.com>
