CI rehearsal only (do not merge)

[michael-moffett]

Fork CI only. Do not merge.

[greptile-apps]

Confidence Score: 5/5

[Medium risk] Adds test-only cheatcode for mint configuration.

The change appears safe to merge based on the reviewed behavior.

Summary

Adds surfnet_setMint to create or update SPL Token and Token-2022 mints, including confidential-transfer mint configuration. Adds Rust and SDK types, method registration, and tests for extension preservation, partial updates, rent, and token-account integration.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  A["surfnet_setMint request"] --> B["Look up or generate mint"]
  B --> C["Apply base-field updates"]
  C --> D{"Confidential update?"}
  D -- Yes --> E["Build Token-2022 extension data"]
  D -- No --> F["Pack base, preserving extensions"]
  E --> G["Validate owner and top up rent"]
  F --> G
  G --> H["Commit account update"]

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