📝 docs: add agents md (#8971)

* build: Add agents.md

* feat: Add agents md

* 📝 docs: address tjx666's review comments on AGENTS.md

- Fix build tools description to reflect actual Next.js setup (Turbopack/Webpack)
- Remove incorrect Turborepo reference
- Improve TypeScript practices description for clarity

Co-authored-by: René Wang <RiverTwilight@users.noreply.github.com>

---------

Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
Co-authored-by: René Wang <RiverTwilight@users.noreply.github.com>

AGENTS.md

@@ -0,0 +1,133 @@
+# LobeChat Development Guidelines
+
+This document serves as a comprehensive guide for all team members when developing LobeChat.
+
+## Tech Stack
+
+Built with modern technologies:
+
+- **Frontend**: Next.js 15, React 19, TypeScript
+- **UI Components**: Ant Design, @lobehub/ui, antd-style
+- **State Management**: Zustand, SWR
+- **Database**: PostgreSQL, PGLite, Drizzle ORM
+- **Testing**: Vitest, Testing Library
+- **Package Manager**: pnpm (monorepo structure)
+- **Build Tools**: Next.js (Turbopack in dev, Webpack in prod), Vitest
+
+## Directory Structure
+
+The project follows a well-organized monorepo structure:
+
+- `apps/` - Main applications
+- `packages/` - Shared packages and libraries
+- `src/` - Main source code
+- `docs/` - Documentation
+- `.cursor/rules/` - Development rules and guidelines
+
+## Development Workflow
+
+### Git Workflow
+
+- Use rebase for git pull: `git pull --rebase`
+- Git commit messages should prefix with gitmoji
+- Git branch name format: `username/feat/feature-name`
+- Use `.github/PULL_REQUEST_TEMPLATE.md` for PR descriptions
+
+### Package Management
+
+- Use `pnpm` as the primary package manager
+- Use `bun` to run npm scripts
+- Use `bunx` to run executable npm packages
+- Navigate to specific packages using `cd packages/<package-name>`
+
+### Code Style Guidelines
+
+#### TypeScript
+
+- Follow strict TypeScript practices for type safety and code quality
+- Use proper type annotations
+- Prefer interfaces over types for object shapes
+- Use generics for reusable components
+
+#### React Components
+
+- Use functional components with hooks
+- Follow the component structure guidelines
+- Use antd-style & @lobehub/ui for styling
+- Implement proper error boundaries
+
+#### Database Schema
+
+- Follow Drizzle ORM naming conventions
+- Use plural snake_case for table names
+- Implement proper foreign key relationships
+- Follow the schema style guide
+
+### Testing Strategy
+
+**Required Rule**: `testing-guide/testing-guide.mdc`
+
+**Commands**:
+
+- Web: `bunx vitest run --silent='passed-only' '[file-path-pattern]'`
+- Packages: `cd packages/[package-name] && bunx vitest run --silent='passed-only' '[file-path-pattern]'`
+
+**Important Notes**:
+
+- Wrap file paths in single quotes to avoid shell expansion
+- Never run `bun run test` - this runs all tests and takes ~10 minutes
+- If a test fails twice, stop and ask for help
+- Always add tests for new code
+
+### Type Checking
+
+- Use `bun run type-check` to check for type errors
+- Ensure all TypeScript errors are resolved before committing
+
+### Internationalization
+
+- Add new keys to `src/locales/default/namespace.ts`
+- Translate at least `zh-CN` files for development preview
+- Use hierarchical nested objects, not flat keys
+- Don't run `pnpm i18n` manually (handled by CI)
+
+## Available Development Rules
+
+The project provides comprehensive rules in `.cursor/rules/` directory:
+
+### Core Development
+
+- `backend-architecture.mdc` - Three-layer architecture and data flow
+- `react-component.mdc` - Component patterns and UI library usage
+- `drizzle-schema-style-guide.mdc` - Database schema conventions
+- `define-database-model.mdc` - Model templates and CRUD patterns
+- `i18n.mdc` - Internationalization workflow
+
+### State Management & UI
+
+- `zustand-slice-organization.mdc` - Store organization patterns
+- `zustand-action-patterns.mdc` - Action implementation patterns
+- `packages/react-layout-kit.mdc` - Flex layout component usage
+
+### Testing & Quality
+
+- `testing-guide/testing-guide.mdc` - Comprehensive testing strategy
+- `code-review.mdc` - Code review process and standards
+
+### Desktop (Electron)
+
+- `desktop-feature-implementation.mdc` - Main/renderer process patterns
+- `desktop-local-tools-implement.mdc` - Tool integration workflow
+- `desktop-menu-configuration.mdc` - Menu system configuration
+- `desktop-window-management.mdc` - Window management patterns
+- `desktop-controller-tests.mdc` - Controller testing guide
+
+## Best Practices
+
+- **Conservative for existing code, modern approaches for new features**
+- **Code Language**: Use Chinese for files with existing Chinese comments, American English for new files
+- Always add tests for new functionality
+- Follow the established patterns in the codebase
+- Use proper error handling and logging
+- Implement proper accessibility features
+- Consider internationalization from the start