Module admin 

config, export-snapshot (FR10), backup-key — administrative commands. Config surfaces the TP8 (c)/(b) treatment + the pre-2025 lot method; export/backup arrive in Task 15.

Functions

backup_key

§8: export the passphrase-protected key (escape hatch; HIGH-security write).

export_snapshot

FR10 / NFR2 exception: decrypted SQLite image (via the store) + the projected ledger as CSV. When tax_year is Some(y), the per-tax-year Form 8949 + Schedule D CSVs are also written, year-scoped to y (P2-B); when None, only the all-years CSVs are written.

set_config

Persist a new TP8 fee treatment (None = leave unchanged), then return the resulting config.

set_pre2025_method

Persist the pre-2025 lot identification method and attestation flag, then return the resulting config.

show_config