release: nexus btpanel session fix and app-v2

.gitignore

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+# Nexus — Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.egg-info/
+build/
+.eggs/
+
+# Environment (NEVER commit — contains production credentials)
+.env
+.install_locked
+.install_state.json
+SECRETS.md
+.git-askpass-nexus.sh
+deploy/nexus-1panel.secrets.sh
+*.pem
+.env.*
+.venv/
+venv/
+ENV/
+
+# Agent memory (local MCP persistence, do not commit)
+.claude/mcp-memory.jsonl
+
+# MCP tool data (local development artifacts)
+.megamemory/
+.playwright-mcp/
+frontend/test-results/
+frontend/e2e/.auth/
+tmp/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+nexus.log
+
+# Node offline cache for WSL install (large tarball)
+.cache/
+
+# Test
+.pytest_cache/
+htmlcov/
+.coverage
+coverage.xml
+
+# Node (for Tailwind/Alpine.js build)
+node_modules/
+web/css/tailwind-output.css
+
+# Build output (Vite/Vuetify frontend)
+# SPA 构建产物纳入 Git，便于服务器 git pull 部署（见 deploy/deploy-frontend.sh）
+# 仍忽略本地临时文件
+web/app/assets/.tmp/
+# Legacy dist dir (no longer used)
+**/dist/
+
+# Uploads
+web/uploads/
+
+# Data (sensitive)
+web/data/config.php
+web/data/*.db
+web/data/1panel-hosts.json
+
+# Backups
+backups/
+
+# Docker local secrets
+docker/.env
+docker/.env.prod
+!docker/.env.example
+!docker/.env.prod.example
+scripts/npm-proxy.env
+
+# Deploy
+deploy/*.key
+
+# Backups
+backups/