Replaces Compose Material3's unthemed default (purple) with a real color
scheme built from Gitea's own brand green, verified against Gitea's source
(--color-logo: #609926). Fixes a live-reported bug where pagination footer
button heights visibly varied by pinning one explicit height on every
button across all four screens' footers, and by sharing one
SimplePaginationFooter for the plain previous/next case. Each repository
row now shows its Gitea-reported primary language and a tappable star
toggle wired to the existing toggleFavorite action.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>