The send tab read the OS clipboard every frame the paste button was
hovered, to preview a pasted address. SDL's clipboard read is a
synchronous round-trip that can stall, and the preview can only ever
latch when the recipient field is empty, so most of those reads were
wasted work.
- The clipboard is now read only while the button is hovered and the
recipient field is empty, polled once on hover entry and then at most
twice a second.
- Trimming the clipboard text moves to a shared helper that also bounds
the copy so a pathological multi-megabyte clipboard is ignored.
Tests: the trim helper handles null, surrounding whitespace, an
all-whitespace string, and the length bound.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DanSandClaude Opus 4.8
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