WZP_INTEGRATION.md: featherChat ↔ WarzonePhone integration spec (1001 lines)
Covers: shared identity model (same BIP39 seed), authentication flow
(Ed25519 signed tokens), call signaling via WireMessage::CallSignal,
DTLS-SRTP media encryption bootstrapped from Double Ratchet,
group calls (SFU + Sender Keys), warzone scenarios (voice messages
as attachments, mule delivery for missed calls).
Phased roadmap: shared identity → signaling → encrypted calls → group calls.
featherChat-side details confirmed against code.
WZP-side details marked [SPECULATIVE] (WZP codebase was inaccessible).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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