[feature-runner] Skill scaffold and minimal execution loop

[orioltf]

This was generated by AI during triage.

Parent

docs/issues/feature-runner/PRD.md

What to build

Create .claude/skills/implement-feature/SKILL.md. Implement the full happy path for a named-slug invocation on a feature with one or more issues: create a feature/afk/<slug> worktree from develop, read all NN-*.md files in the feature directory, filter to those with Status: ready-for-agent (skip resolved and closed), sort numerically, invoke /tdd as a non-interactive sub-agent for each issue in order with the issue file and PRD as context, mark each issue Status: resolved on successful completion.

All file and git operations must use Claude tool calls — no shell scripts, no POSIX paths. This is the tracer bullet: the entire end-to-end happy path without failure handling, PR creation, or progress output.

Acceptance criteria

• .claude/skills/implement-feature/SKILL.md exists and is invocable as /implement-feature <slug>
• Running /implement-feature <slug> creates a feature/afk/<slug> branch and worktree from develop
• Only issues at Status: ready-for-agent are processed; resolved and closed issues are skipped
• Each issue is handed to /tdd as a non-interactive sub-agent invocation with the issue file and PRD as context
• Each issue file is updated to Status: resolved after successful /tdd completion
• All file and git operations use Claude tool calls, not shell scripts (cross-platform requirement)

Blocked by

None — can start immediately.

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PRD: docs/issues/feature-runner/PRD.md
Migrated from: docs/issues/feature-runner/01-skill-scaffold.md (source removed after migration)
Touched by PRs: #25, #32