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What changed
Added the engine's internal program crates: MagicRoot and v42 calculator
implementations with separate interface crates.
Why
Engine account CRUD needs privileged operations ordinary programs cannot perform,
while callers and tests need instruction schemas without depending on execution
implementations.
Part of #4.
Closes #30.
Impact
magic-root-interfacedefinesMagicRootInstructionand instructioncomposition;
magic-root-programprovides the native entrypoint.Patchapplies field changes and balances lamport deltas against the authority;Finalizeloads executable targets into the transaction program cache.Deletemarks accounts closed, whilePostFinalizeinvokes follow-upinstructions after rejecting immutable writable accounts.
runtime and integration tests.
Reviewer notes
MagicRoot is authority-gated: every invocation must be top-level and signed by
the thread-local
AUTHORITY. Authorization and decoding complete before thetarget account is borrowed.
Follow-up
The engine crate registers MagicRoot and exposes account CRUD through these
instructions upstack.