Initial Ralph scaffold

agent_docs/code_patterns.md

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+# Code Patterns
+
+## Project Conventions
+
+
+### TypeScript Guidelines
+
+- Use strict mode
+- No `any` types
+- Use interfaces for object shapes
+- Use type guards for narrowing
+- Export types from `types/index.ts`
+
+### API Patterns
+
+- Use middleware for cross-cutting concerns
+- Validate all input
+- Return consistent error responses
+- Use proper HTTP status codes
+- Log all requests
+
+## Error Handling
+
+- Always catch and handle errors
+- Log errors with context
+- Return user-friendly messages
+- Never expose internal details