卫戍协议：盟约 web remake — initial import

Online co-op browser remake of Arknights' Stronghold Protocol: Alliance
(client-simulated combat, official waves/bonds/items/strategies, 3D board,
facing wheel, operator loadout, official emotes, deployment scripts).

.gitattributes

@@ -0,0 +1,20 @@
+# Normalise line endings in the repository; check out Windows scripts with CRLF (cmd.exe needs it for labels/goto)
+# and shell scripts with LF, whatever core.autocrlf says on the cloning machine.
+* text=auto
+*.bat text eol=crlf
+*.cmd text eol=crlf
+*.ps1 text eol=crlf
+*.sh  text eol=lf
+*.mjs text eol=lf
+*.js  text eol=lf
+*.py  text eol=lf
+# binary assets
+*.png binary
+*.jpg binary
+*.webp binary
+*.skel binary
+*.woff2 binary
+*.otf binary
+*.ttf binary
+*.mp3 binary
+*.ogg binary