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This was referenced Jun 23, 2026
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What changed
Added the engine's built-in MagicRoot program as two crates:
magic-root-program(execution) and
magic-root-interface(shared instruction schema).Why
The engine needs a privileged built-in for account changes no ordinary program
may make — patching arbitrary fields, finalizing, and closing accounts — while
letting callers build those instructions without depending on execution logic.
Part of #4.
Impact
magic-root-programis wired in asMagicRootEntrypoint; the schema lives innucleus::runtime.Finalizedebits lamports from the payer to conserve supply and loadsexecutable targets into the tx program cache;
DeletesetsAccountMode::Closed;PostFinalizeCPIs follow-ups after rejecting immutable writable accounts.magic-root-interfaceexposesMagicRootInstructionandcomposesoenginecan build instructions without the program crate.
Reviewer notes
The program is unrestricted, so it is authority-gated: every instruction must be
top-level (no CPI) and signed by
AUTHORITY, checked before any account is touched.Follow-up
engineissues account CRUD as MagicRoot instruction sequences upstack.