Add Puzzle Type

Scaffold a new puzzle type across all pipeline integration points in jigsawR.

When to Use

• Adding a completely new puzzle type to the package
• Following the established integration checklist (CLAUDE.md 10-point pipeline)
• Ensuring nothing is missed when wiring a new type end-to-end

Inputs

• Required: New type name (lowercase, e.g. "triangular")
• Required: Geometry description (how pieces are shaped/arranged)
• Required: Whether the type needs external packages (add to Suggests)
• Optional: Parameter list beyond the standard (grid, size, seed, tabsize, offset)
• Optional: Reference implementation or algorithm source

Procedure