Adds the bitSpire ↔ LNbits security pathway document drafted at the
start of v2 hardening — state-of-the-union, threat model, audit
findings, and the layered Nostr-native defence proposal (S0–S8).
Markdown source + printable A4 PDF + the CSS used by pandoc to
render. Linked from MEMORY index for future sessions to consult
when reviewing security work.
Carries the original Sprint-1 plan (NIP-26 delegation, NIP-40
expiration, NIP-78 fleet roster, etc.); subsequent work pivoted
NIP-26 → NIP-46 (bunker) per lnbits#18 and ripped out the public
NIP-78 publishing per the privacy-by-default operator preference.
Treat the doc as a frozen snapshot of the design at v1 — the
architectural framing remains useful even where individual
sub-issues have moved.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
