style.BACKGROUND changing doesn't help if flutter_launcher_icons reads a
stale value from pubspec.yaml's own independent config -- that's exactly
what just happened across all 6 apps during the warm-palette rollout: the
generated PNG assets were correct, but Android's actual home-screen icon
(the adaptive icon: background color + foreground drawable, not the
legacy ic_launcher.png mipmap) stayed on the old color, invisible until a
physical device check caught it.
sync_pubspec_background() now rewrites the line in place before every
run_flutter_launcher_icons() call, so this can't silently drift again.
Verified: 43/43 tests (4 new), 100% line+branch coverage on generate.py.
Every Flutter app still shipped the stock Flutter "beach" launcher icon, and
none had an adaptive-icon descriptor at all. Rather than hand-drawing five
one-off icons, define the family once and let each app contribute only an
accent colour and a glyph.
The family: a charcoal #1B1D21 field carrying one glyph in that app's own
theme seed colour, at a single stroke weight. Glyphs are optically centred
automatically - render.centre_offset rasterises a glyph alone, measures its
ink box, and translates (never scales) the fragment, so a row of icons lines
up while every icon keeps the exact family stroke weight.
safe_box_overflow warns when a glyph exceeds the 560px adaptive-icon safe
box; it caught three real overflows that a launcher mask would have clipped.
The registry points dufs_client at ~/dufs-cloud/app: ~/dufs_client was a
stale, remote-less checkout with an identical package name, since deleted.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
