v0.0.5: WebSocket real-time messaging

Server:
- WS endpoint: /v1/ws/:fingerprint
- Connection registry in AppState (fingerprint → WS senders)
- On connect: flushes queued DB messages, then pushes in real-time
- send_message: pushes to WS if connected, falls back to DB queue
- Auto-cleanup on disconnect
- WS accepts both binary and JSON text frames for sending

Web client:
- Replaces 2-second HTTP polling with persistent WebSocket
- Auto-reconnects on disconnect (3-second backoff)
- Sends via WS when connected, HTTP fallback
- Messages arrive instantly (no polling delay)
- "Real-time connection established" shown on connect

HTTP polling still works:
- CLI recv command uses HTTP (unchanged)
- Web falls back to HTTP if WS fails
- Mules/scripts can still use HTTP API

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

warzone/Cargo.toml

@@ -9,7 +9,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.0.4"
+version = "0.0.5"
 edition = "2021"
 license = "MIT"
 rust-version = "1.75"
@@ -37,7 +37,7 @@ bincode = "1"
 tokio = { version = "1", features = ["full"] }
 
 # Server
-axum = "0.7"
+axum = { version = "0.7", features = ["ws"] }
 tower = "0.4"
 tower-http = { version = "0.5", features = ["cors", "trace"] }