# Implement Feature

> Implement a feature or fix a bug following the project's TypeScript patterns and conventions. Use when code changes are needed. Use when this capability is needed.

- Skill: `tomevault-io/implement-feature-2` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/implement-feature-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/implement-feature-2/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/implement-feature-2

---


# Implement Feature

Implement the following:

$ARGUMENTS

## Implementation Checklist

1. **Read existing code** before making changes
2. **Follow existing patterns**:
   - Agents: BaseAgent + StateGraph + Annotation state
   - Backend: tsoa controllers + service layer
   - Frontend: Vue 3 Composition API + Pinia
   - Common: Shared types and utilities
3. **Write TypeScript** with proper type annotations
4. **Handle errors** at system boundaries
5. **Verify** the build passes: `pnpm build`

## Key Conventions

- Use `Annotation.Root({})` for LangGraph agent state
- Use `@traceable` decorator for LangSmith observability
- Export new types from the appropriate package's index.ts
- Register new agents in AgentFactory
- Generate routes after controller changes: `pnpm --filter @llmops-demo-ts/backend generate`

---
> Converted and distributed by [TomeVault](https://tomevault.io/claim/yu-iskw) — claim your Tome and manage your conversions.
<!-- tomevault:4.0:skill_md:2026-04-11 -->