Lumo Copilot v0.2.1

Lumo Copilot v0.2.1 — a calmer file tree in Coding.

Build output is hidden by default
The Coding file tree was showing build/, dist/, release/ and stray bundled
files right alongside your actual source — folders you never edit, sitting at the
top of the list burying the code you do. They're hidden now, with a small
"Show build output" link at the bottom of the tree when there's something
hidden, so nothing is out of reach.

Also covers out, target, coverage, vendor, .next, __pycache__,
venv, lockfiles and sourcemaps.

Note this only affects what you see. Lumo itself can still read those folders
when a task genuinely calls for it.

Files are colour-coded by type
Code, config, styles and docs each get their own tint, so the tree can be scanned
at a glance instead of read line by line.

Clearer empty state
The editor pane now says something useful: pick a file, or just describe the
change and let Lumo find the file itself.

Install / update
Existing installs update automatically. New installs: right-click the app → Open
the first time (unsigned build), Apple Silicon only.