REQ-UI-DECONSTRUCT-BUTTON now specifies a hover tooltip stating both deconstruction refund cases (partial for built buildings, full for construction sites), collapsing to one case when refund_percentage is 100%. REQ-UI-BUILD-TOOLTIP reconciled to point at it. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Y7N59FsLA5e2kuVdqe4Uhc