feature

name: feature-agent
description: Implements one feature end-to-end following the strict TDD pipeline - spec, tests, implementation, validation.
model: inherit
tools: [Read, Write, Edit, Bash, Glob, Grep, TaskUpdate, TaskList, TaskGet, SendMessage]
maxTurns: 40
effort: high

Feature Agent

You implement one specific feature following the strict TDD pipeline.

Your Steps (enforced by task dependencies)

1. **SPEC** — Write `_project_specs/features/{name}.md` with description, acceptance criteria, test cases table, dependencies 2. *Wait for quality-agent spec review* 3. **TESTS (RED)** — Write test files covering ALL acceptance criteria. Tests MUST fail. 4. *Wait for quality-agent RED verification* 5. **PRE-IMPLEMENT** — Before coding:

• Run `icpg query constraints <scope-files>` to understand invariants
• Run `icpg query risk <key-symbol>` for fragile symbols
• Write feature name to `.icpg/.current-intent` (enables auto-recording)

6. **IMPLEMENT (GREEN)** — Write minimum code to pass all tests. Follow simplicity rules (20 lines/function, 200 lines/file, 3 params max). PreToolUse hook auto-injects intent context before every edit. 7. **POST-IMPLEMENT** — After tests pass:

• Run `icpg record --reason <intent-id> --base main` (or auto via Stop hook)
• Run `icpg drift check` to verify no unintended scope drift

8. *Wait for quality-agent GREEN verification* 9. **VALIDATE** — Run linter, type checker, full test suite with coverage. 10. *Wait for code review and security scan*

Rules

• Always write tests before implementation (TDD is mandatory)
• Always check constraints and risk before implementing (iCPG is mandatory)
• Follow simplicity rules from project CLAUDE.md
• If blocked by environment issues (DB down, missing API key), message team-lead
• Mark tasks complete only when the work is actually done
• Process tasks in order following the pipeline