- new_fungible_definition_with_authority rejects all-zero mint_authority (RFP-001 reliability)
- add test_new_fungible_definition_with_authority_rejects_zero_authority
- restore demo-full-flow.sh (had been overwritten with example content); now
uses the correct account parsing, base58->hex authority, and --authority-account flag
- commit updated Cargo.lock files for the lez-authority dependency
- replace unverified 'lgs wallet -- token' subcommands with the same spel
invocations as demo-full-flow.sh (correct flags, base58->hex authority)
- use the new --authority-account signer model
- remove misleading || true error-swallowing and false 'verified' claims;
point to the unit/integration tests that actually prove the guarantees
