v0.0.8: Server-side message deduplication

Server:
- DedupTracker in AppState: bounded HashSet (10,000 IDs, FIFO eviction)
- send_message: extracts message ID from bincode, drops duplicates
- WS handler: dedup on both binary and JSON message frames
- extract_message_id() parses all WireMessage variants

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 = "0.0.7"
+version = "0.0.8"
 dependencies = [
  "anyhow",
  "argon2",
@@ -2680,7 +2680,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-mule"
-version = "0.0.7"
+version = "0.0.8"
 dependencies = [
  "anyhow",
  "clap",
@@ -2689,7 +2689,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-protocol"
-version = "0.0.7"
+version = "0.0.8"
 dependencies = [
  "base64",
  "bincode",
@@ -2712,7 +2712,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-server"
-version = "0.0.7"
+version = "0.0.8"
 dependencies = [
  "anyhow",
  "axum",
@@ -2739,7 +2739,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-wasm"
-version = "0.0.7"
+version = "0.0.8"
 dependencies = [
  "base64",
  "bincode",