Rewrite README intro and status table in plain, fact-per-sentence English

The intro read as a marketing claim ("aiming to feel like a native window
manager... rather than a compromise") instead of stating what the project
actually does. Replaced with concrete, verifiable facts: every backend
draws a real title bar with drag/resize/minimize/maximize/close.

The status table implied Windows and macOS were unplanned ("designed, not
built") rather than real, in-progress work blocked only on hardware
access. All four backends are equal in design intent; Linux is verified
because it is the only platform with a working development machine right
now, not because the others are lower priority. Windows/macOS rows now
name the real cfg-gated code that already exists for each and state
plainly why it has never been built or run for real.

0 files changed, 0 insertions, 0 deletions