v0.0.15: unalias, admin alias removal, /reply, web version fix

Aliases:
- /unalias — remove your own alias
- /admin-unalias <alias> <password> — admin removes any alias
- Admin password via WARZONE_ADMIN_PASSWORD env var (default: "admin")
- POST /v1/alias/unregister + POST /v1/alias/admin-remove

Reply:
- /r or /reply — switches peer to whoever last DM'd you
- lastDmPeer tracked on both web and TUI
- Then type normally to reply

Web:
- Version bumped to 0.0.15 (was stuck at 0.0.10)
- WASM rebuilt with latest protocol

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

warzone/Cargo.lock

@@ -2789,7 +2789,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-client"
-version = "0.0.14"
+version = "0.0.15"
 dependencies = [
  "anyhow",
  "argon2",
@@ -2822,7 +2822,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-mule"
-version = "0.0.14"
+version = "0.0.15"
 dependencies = [
  "anyhow",
  "clap",
@@ -2831,7 +2831,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-protocol"
-version = "0.0.14"
+version = "0.0.15"
 dependencies = [
  "base64",
  "bincode",
@@ -2856,7 +2856,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-server"
-version = "0.0.14"
+version = "0.0.15"
 dependencies = [
  "anyhow",
  "axum",
@@ -2883,7 +2883,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-wasm"
-version = "0.0.14"
+version = "0.0.15"
 dependencies = [
  "base64",
  "bincode",