[feature-runner] Progress reporting

[orioltf]

This was generated by AI during triage.

Parent

docs/issues/feature-runner/PRD.md

What to build

Extend the skill to emit a progress line before each /tdd invocation so the user can judge when to check back. The line should name the current issue number, the total count, and the issue title.

Acceptance criteria

• Before each /tdd invocation, the runner outputs a line in the format: Implementing issue N of M: <issue title>
• N counts from 1 and M is the total number of ready-for-agent issues in the feature (excluding already resolved or closed ones at run start)
• The progress line is emitted regardless of whether failure handling or PR creation are in place

Blocked by

#80

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PRD: docs/issues/feature-runner/PRD.md
Migrated from: docs/issues/feature-runner/04-progress-reporting.md (source removed after migration)
Touched by PRs: #25, #32