feat: expand multiplayer, chat, and release support

- add network NPC synchronization and dialogue interactions
- add world bulletin publishing and display
- improve authentication, session refresh, and appearance sync
- synchronize player direction and movement animations
- improve input focus and progressive Web loading
- add macOS/Windows builds and deployment configuration
- include required fonts, shaders, and runtime assets

deploy/Caddyfile.rainyun-test

@@ -0,0 +1,89 @@
+162-251-94-42.sslip.io {
+	log {
+		output file /var/log/caddy/whaletown-access.json {
+			roll_size 20MiB
+			roll_keep 5
+			roll_keep_for 168h
+		}
+		format json
+	}
+
+	encode zstd gzip
+	root * /var/www/whaletown/site
+
+	header {
+		X-Content-Type-Options nosniff
+		Referrer-Policy strict-origin-when-cross-origin
+	}
+
+	@play path /play/*
+	header @play {
+		Cross-Origin-Opener-Policy same-origin
+		Cross-Origin-Embedder-Policy require-corp
+	}
+
+	@immutable_pack {
+		path /play/packs/*.pck
+		file {path}
+	}
+	header @immutable_pack {
+		Cache-Control "public, max-age=31536000, immutable"
+		Content-Type "application/octet-stream"
+	}
+
+	@pack_manifest path /play/packs/manifest.json
+	header @pack_manifest Cache-Control "no-cache"
+
+	@runtime path /play/index.js /play/index.wasm /play/index-*.pck /play/index.audio*.js
+	header @runtime Cache-Control "public, max-age=14400"
+
+	@html path / /index.html /play /play/ /play/index.html
+	header @html Cache-Control "no-cache"
+
+	@play_without_slash path /play
+	redir @play_without_slash /play/ 308
+
+	handle_path /play/* {
+		root * /var/www/whaletown/site/play
+		file_server
+	}
+
+	@game path /game*
+	handle @game {
+		reverse_proxy http://124.221.77.216 {
+			header_up Host 124.221.77.216
+		}
+	}
+
+	@location path /location-broadcast
+	handle @location {
+		reverse_proxy http://124.221.77.216 {
+			header_up Host 124.221.77.216
+		}
+	}
+
+	@notice path /ws/notice
+	handle @notice {
+		reverse_proxy http://124.221.77.216 {
+			header_up Host 124.221.77.216
+		}
+	}
+
+	@account_assets path /assets/account/*
+	handle @account_assets {
+		reverse_proxy http://124.221.77.216 {
+			header_up Host 124.221.77.216
+		}
+	}
+
+	redir /api /api/
+	handle /api/* {
+		reverse_proxy http://124.221.77.216 {
+			header_up Host 124.221.77.216
+		}
+	}
+
+	handle {
+		file_server
+	}
+}