dijkstra: implement new Plutus V4 builtins

[wolf31o2]

Summary

The Dijkstra hard fork introduces new Plutus builtins as part of V4. plutigo must implement these so V4 scripts that use them can execute correctly.

What Needs to Happen

1. Once the Dijkstra Plutus spec is finalized, enumerate the new V4 builtins.
2. Implement each builtin in the appropriate package (typically alongside the existing V1/V2 builtins).
3. Wire them into the builtin dispatch table for V4.
4. Add unit tests covering each new builtin's semantics and cost.

Blocked By

• Dijkstra Plutus spec from IOG/Intersect

Downstream Consumers

• Dingo Dijkstra Plutus integration (dijkstra: integrate Plutus V4 cost model and new builtins dingo#1936)

Roadmap

Q4 2026 — Dijkstra hard fork readiness.