refactor: 统一公司名称语序并整理gitignore规则

1.  调整中英文站点、多语言页面的公司名称为标准语序"山东首达特科技工程有限公司"
2.  重构demo-vue和根目录的.gitignore文件，整理分类忽略规则
3.  注释掉闲置的三轮车产品配置项

.gitignore

@@ -0,0 +1,100 @@
+# =============== 
+# Project specific files
+# ===============
+*.log
+hs_err_pid*.log
+replay_pid*.log
+
+# Database backup files (optional - keep if needed)
+# demo_news*.sql
+# *.sql
+
+# =============== 
+# Common
+# ===============
+.DS_Store
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+# =============== 
+# Node.js / Frontend (demo-vue)
+# ===============
+node_modules/
+/dist
+/dist-ssr
+/coverage
+*.tsbuildinfo
+.eslintcache
+.env.local
+.env.*.local
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# Vite
+*.timestamp-*-*.mjs
+
+# Cypress
+/cypress/videos/
+/cypress/screenshots/
+
+# Vitest
+__screenshots__/
+
+# =============== 
+# Java / Spring Boot (demo4)
+# ===============
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+# Maven
+.mvn/
+mvnw
+mvnw.cmd
+
+# STS / Eclipse
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+# IntelliJ IDEA
+*.iws
+*.iml
+*.ipr
+
+# NetBeans
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+# VS Code
+.vscode/
+
+# =============== 
+# OS generated
+# ===============
+Thumbs.db
+.DS_Store
+desktop.ini