完善 gitignore 规则，移出版本库中的运行时资源与依赖产物，并更新设备展示图片。

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

@@ -1,11 +1,34 @@
+# OS
 .DS_Store
+thumbs.db
+
+# Dependencies
+node_modules/
+
+# Webpack / electron-vue build output
 dist/electron/*
 dist/web/*
+!dist/electron/.gitkeep
+!dist/web/.gitkeep
+
+# electron-builder pack output (keep icons for packaging)
 build/*
 !build/icons
-node_modules/
+!build/icons/**
+
+# Logs
 npm-debug.log
 npm-debug.log.*
-thumbs.db
-!.gitkeep
+yarn-error.log
+yarn-debug.log*
+
+# Local env (secrets)
+.env
+.env.local
+.env.*.local
+
+# Runtime / deploy assets (not source)
 /CardsoonServer
+/cardsoonServer
+/User Templates
+/docs