Reported directly by the user after seeding a test world through the
browse-worlds screen: "screen is blank now". Two compounding layout
bugs, both real:
1. world_list.tscn's root VBoxContainer had no anchors at all, only
size_flags -- but its parent (the scene's root node) is a plain
Control, not a Container, so size_flags on a Control's direct child
are meaningless there. Without anchors it never actually filled the
screen, so it (and everything under it) collapsed toward zero size.
2. size_flags_horizontal/vertical used the raw integer 4 everywhere
expand-fill was clearly intended (ScrollContainer, its WorldList
child, HeaderHBox, TitleLabel) -- but 4 is Control.SIZE_SHRINK_CENTER
in Godot 4, not SIZE_EXPAND_FILL (which is 3). ScrollContainer with
SHRINK_CENTER takes only its own minimum size instead of expanding,
cascading a ~1px width down through every card and every label.
Confirmed the actual enum values by asking Godot directly rather
than assuming.
Both are exactly the kind of bug a headless smoke test checking only
"did cards get added to the tree" can't catch -- child_count was
correctly non-zero, nothing crashed, the content was just rendered
invisibly thin. Verified the fix is real by deliberately reintroducing
bug #2 and confirming the test now correctly fails (card width 25px,
below the 200px sanity threshold) before restoring it.
Also replaced the card background: it was a ColorRect manually moved to
child index 0 of a VBoxContainer, which doesn't work as an overlay --
a VBoxContainer lays out ALL its children in sequence, so the "moved to
front" ColorRect rendered as an empty dark bar ABOVE the text, not
behind it. Now a proper PanelContainer with a StyleBoxFlat background,
the idiomatic way to get a colored panel behind auto-laid-out content
in Godot.
smoke_test_world_list.gd strengthened to actually catch this class of
bug going forward: seeds a real world via POST /api/worlds/ first (the
checkpoint runner's fresh DB meant the populated-card path never ran in
CI at all before this, only empty-list did), and asserts each card's
real computed width, not just that cards exist.
Full checkpoint suite re-verified clean on this branch: migrations,
68/68 pytest, all 6 Godot smoke tests, both platform exports.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
claude-checkpoint-tooling
8fc9d378e4