Create Agents.MD for LLMs

AGENTS.md

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+# AGENTS.md
+
+## Build/Lint/Test Commands
+
+### Running Tests
+- `pnpm test` - Run all tests once
+- `pnpm run test:watch` - Run tests in watch mode
+- `pnpm run test:ui` - Run tests with Vitest UI
+- `pnpm run test:coverage` - Run tests with coverage report
+- `pnpm test -- --reporter=verbose` - Run single test with verbose output
+
+### Build Commands
+- `pnpm run build` - No explicit build command found, project is a single JS file
+- The main output file is `trmnl-form-builder.js`
+
+### Linting
+No explicit linting commands found. Project appears to use standard JavaScript without linter configuration.
+
+## Code Style Guidelines
+
+### Imports
+- Uses ES modules with `import` statements
+- No specific import ordering requirements identified
+- Component is registered as a custom element using `customElements.define()`
+
+### Formatting
+- Uses standard JavaScript formatting conventions
+- Indentation appears to be 2 spaces (based on code review)
+- No specific formatter configured (prettier, eslint, etc.)
+
+### Types
+- No explicit type definitions found
+- Uses vanilla JavaScript without TypeScript
+- Properties are set directly on elements
+
+### Naming Conventions
+- Component name: `trmnl-form-builder`
+- Method names follow camelCase convention
+- Property names follow camelCase convention
+- Constants are uppercase with underscores when appropriate
+
+### Error Handling
+- Basic error handling through try/catch blocks where needed
+- Validation of inputs and edge cases in functions like escapeYaml
+- No comprehensive error logging or centralized error handling pattern
+
+### Code Structure
+- Single JavaScript file implementation
+- Uses class-based component structure for custom element
+- Modular approach with separate methods for different functionality
+- Self-contained component with no external dependencies beyond browser APIs
+
+### Testing
+- Unit tests using Vitest framework
+- Tests cover core functionality like YAML escaping/unescaping
+- Tests use `describe`, `it`, and `expect` patterns
+- Tests run in jsdom environment to simulate browser context
+
+### Additional Notes
+- Component uses custom element API (`customElements.define`)
+- Implements shadow DOM for encapsulation
+- Follows web standards for component development
+- No build tools or transpilation steps identified