Malte Langkabel
3ac3d8a6e6
While a Tunnel Entry or Exit (building or construction site) is selected, mark its connection green in the game world — the entry tile, exit tile, and tiles between — reusing the tunnel_preview color from the placement preview. Unpaired tunnels show no green. - Add core findTunnelPartner(): the matching end of an existing tunnel tile, reusing firstTunnelFacing so the pairing scan stays single-sourced; unit-tested in TunnelCompletionTest. - GameWorldView: extract the built+site tunnel index into collectTunnelTiles() (shared with updateTunnelGhost) and add drawSelectedTunnelConnections(), called from drawOverlays. Tiles are deduped via a set so a connection selected from both ends fills once. - Also commits the REQ-BLD-TUNNEL-SELECT-HIGHLIGHT requirement text. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Y7N59FsLA5e2kuVdqe4Uhc