v0.0.11: Multi-device support (server-side)

Server:
- Register stores per-device bundles: device:<fp>:<device_id>
- GET /v1/keys/:fp/devices lists all registered devices
- WS already pushes to ALL connected devices per fingerprint
- DB queue: first device to poll gets messages (acceptable for Phase 2)

Multi-device flow:
- Same seed on two devices → same fingerprint
- Both register with different device_ids
- Both connect via WS → both receive messages in real-time
- Each device maintains its own ratchet sessions

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

warzone/Cargo.lock

@@ -2647,7 +2647,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-client"
-version = "0.0.10"
+version = "0.0.11"
 dependencies = [
  "anyhow",
  "argon2",
@@ -2680,7 +2680,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-mule"
-version = "0.0.10"
+version = "0.0.11"
 dependencies = [
  "anyhow",
  "clap",
@@ -2689,7 +2689,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-protocol"
-version = "0.0.10"
+version = "0.0.11"
 dependencies = [
  "base64",
  "bincode",
@@ -2712,7 +2712,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-server"
-version = "0.0.10"
+version = "0.0.11"
 dependencies = [
  "anyhow",
  "axum",
@@ -2739,7 +2739,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-wasm"
-version = "0.0.10"
+version = "0.0.11"
 dependencies = [
  "base64",
  "bincode",