chore: initial commit of ai site platform

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

.gitignore

@@ -0,0 +1,41 @@
+# 运行时物理目录（Linux 一键脚本）
+.runtime/
+platform/data/uploads/
+
+# 编译产物
+platform/platform
+platform/platform.exe
+gateway/gateway
+gateway/gateway.exe
+
+# 依赖 / 缓存
+web/node_modules/
+**/__pycache__/
+*.pyc
+.venv/
+.env
+ai-service/.env
+*.log
+
+*.exe~
+
+# 本地意见稿 / 不入库
+database_fastapi修改意见.md
+
+# 一键部署脚本（本机/运维侧保留，不推远程）
+start.sh
+stop.sh
+restart.sh
+pull-and-restart.sh
+reload-config.sh
+deploy-menu.sh
+start.bat
+start.ps1
+stop.bat
+stop.ps1
+restart.bat
+restart.ps1
+start-host.ps1
+scripts/lib-aijz-deploy.sh
+scripts/linux/
+