v0.0.3

EchoSVM v0.0.3

EchoSVM now connects real local Solana transaction execution to causal
evidence.

Included

• explain-run executes echosvm.transaction.v1 fixtures with LiteSVM.
• Multi-program SBF loading, explicit accounts, instruction metas, and data.
• Runtime-derived errors, invocation frames, compute units, and post-state.
• PDA derivation checks and explicit labeling when a CPI is rejected before
  the callee starts.
• Generated echosvm.case.v1 and analyzed echosvm.evidence.v1 JSON.
• A real SBF fixture where an incorrect PDA authority rejects a CPI and rolls
  back a preceding account write.
• A regression proving the corrected PDA enters the child and commits state.
• The v0.0.2 standalone ELF/raw sBPF interpreter remains available.

Honest boundary

PDA seeds and tentative failed-state values are declared fixture expectations
in v0.0.3; they are validated against runtime execution but are not recovered
from arbitrary bytecode. EchoSVM does not claim validator equivalence or
historical Mainnet replay.