[neovolgan]

Shared contract agreed before the implementation work is split: docs/TRANSFER-CONTRACT.md.

• Coordinates: source lon/lat stays real. New WorldGeoReference.RotationDegrees, with an exact formula; θ = 0 reproduces today's projection bit for bit. Placement is anchored to the rotated bounds' minimum corner.
• Stable IDs: source ID prefixes (osm-, cad-, survey-, gen-), deterministic object IDs and deterministic world section IDs.
• Sections and seams:
  • sections may differ in size;
  • an object that crosses a seam goes to world level and is never clipped;
  • every source feature must be placed exactly once or kept as evidence with a reason, and the seam check counts this.
• Fences and gates as LinearFeature Kind = "fence":
  • styles with w/n/nw/post tiles;
  • gates and wickets with an opening side;
  • fence tiles sit in the wall slot, so they no longer compete with decorations;
  • GeoJSON input example included.
• Appearance tags: pz:wall, pz:trim, roof:colour, pz:style, pz:kind.
• Small and attached buildings: sheds, bathhouses and toilets from 2×2; a building joined to another without the 1-tile gap.
• Game zones: source tag → zone mapping, including verge vehicle zones.
• Versions: pzTransfer: 1, and the format version is raised only when the new features are used.
• Acceptance: PilnaVillage from 13 sections, no losses on seams, verifier, game probe and B42 server start.

Split of the work is in the table at the top: Claude takes items 1–7 and 9 of the plan; the streaming, storage, UI and zones side is listed for the other implementer.

Next PRs from my side, in order: rotated projection (with tests), then fence lines.

🤖 Generated with Claude Code

https://claude.ai/code/session_015ECCGjSrSADcjxBmXdCBpm

---

Generated by Claude Code