dumbgit v0.15.0

What's changed (v0.14.1 → v0.15.0)

• Dirty repositories are easier to spot on the Workspace board: when a working tree has uncommitted changes, the card's border and header take on a warm amber tint, derived from the existing --modified token rather than new ad-hoc colors. Pure chrome — card order is untouched, and the existing per-row signals stay the source of detail.
• Snapshot restoration in History is guarded again so a restore target can't strand the snapshot's own commit.
• Dependency refresh: htmx 2.0.10, updated runtime deps.