Scaffold Rust workspace: warzone-protocol, server, client, mule

4 crates, all compile. 16/17 tests pass.

warzone-protocol (core crypto):
- Seed-based identity (Ed25519 + X25519 from 32-byte seed via HKDF)
- BIP39 mnemonic encode/decode (24 words)
- Fingerprint type (SHA-256 truncated, displayed as xxxx:xxxx:xxxx:xxxx)
- ChaCha20-Poly1305 AEAD encrypt/decrypt with random nonce
- HKDF-SHA256 key derivation
- Pre-key bundle generation with Ed25519 signatures
- X3DH key exchange (simplified, needs X25519 identity key in bundle)
- Double Ratchet: full implementation with DH ratchet, chain ratchet,
  out-of-order message handling via skipped keys cache
- Message format (WarzoneMessage envelope + RatchetHeader)
- Session type with ratchet state
- Storage trait definitions (PreKeyStore, SessionStore, MessageQueue)

warzone-server (axum):
- sled database (keys, messages, one-time pre-keys)
- Routes: /v1/health, /v1/keys/register, /v1/keys/{fp},
  /v1/messages/send, /v1/messages/poll/{fp}, /v1/messages/{id}/ack

warzone-client (CLI):
- `warzone init` — generate seed, show mnemonic, save to ~/.warzone/
- `warzone recover <words>` — restore from mnemonic
- `warzone info` — show fingerprint and keys
- Seed storage at ~/.warzone/identity.seed (600 perms)
- Stubs for send, recv, chat commands

warzone-mule: Phase 4 placeholder

Known issue: X3DH test fails (initiate/respond use different DH ops
due to missing X25519 identity key in bundle). Fix in next step.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

warzone/target/debug/build/serde-313b916f980ad045/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

warzone/target/debug/build/serde-313b916f980ad045/out/private.rs

@@ -0,0 +1,6 @@
+#[doc(hidden)]
+pub mod __private228 {
+    #[doc(hidden)]
+    pub use crate::private::*;
+}
+use serde_core::__private228 as serde_core_private;

warzone/target/debug/build/serde-313b916f980ad045/output

@@ -0,0 +1,13 @@
+cargo:rerun-if-changed=build.rs
+cargo:rustc-cfg=if_docsrs_then_no_serde_core
+cargo:rustc-check-cfg=cfg(feature, values("result"))
+cargo:rustc-check-cfg=cfg(if_docsrs_then_no_serde_core)
+cargo:rustc-check-cfg=cfg(no_core_cstr)
+cargo:rustc-check-cfg=cfg(no_core_error)
+cargo:rustc-check-cfg=cfg(no_core_net)
+cargo:rustc-check-cfg=cfg(no_core_num_saturating)
+cargo:rustc-check-cfg=cfg(no_diagnostic_namespace)
+cargo:rustc-check-cfg=cfg(no_serde_derive)
+cargo:rustc-check-cfg=cfg(no_std_atomic)
+cargo:rustc-check-cfg=cfg(no_std_atomic64)
+cargo:rustc-check-cfg=cfg(no_target_has_atomic)

warzone/target/debug/build/serde-313b916f980ad045/root-output

@@ -0,0 +1 @@
+/Users/manwe/CascadeProjects/arvan/warzone/target/debug/build/serde-313b916f980ad045/out