Five files hand-rolled a near-identical 32px `.icon-btn` (same size, hover,
and primary/danger variants). Extract a single IconButton.svelte component
so the treatment lives in one place. Converts the four sites with the
standard 32px form: collections detail, manga edit, upload, and the
chapter-pages editor.
The component takes a `variant` (plain/primary/danger) and spreads any
button attributes (onclick, disabled, aria-label, title, data-testid)
straight through; `type="button"` defaults but a caller can override. The
rendered button keeps the same class, styles, and DOM position, so layout
and behaviour are unchanged — no version bump.
Three icon-button sites are intentionally left out:
- The header (+layout) and home search button are 36px / different radius —
size outliers that need a size/radius prop before folding in.
- profile/history's copy is being removed in the shared-HistoryList change;
touching it here would just conflict.
A component (not a global class) avoids colliding with those remaining
local `.icon-btn` definitions.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
