Publish Build with WordPress skills to Agent Skills directories

Parent: #45

## Goal
Decide and execute a generic Agent Skills directory listing for the shared Build with WordPress skills, especially `skills.sh` / Agent Skills ecosystem discovery.

## Evidence
- Agent Skills standard and hub: https://agentskills.io
- Qodo's official blog notes Qodo skills are compatible with major agents and browsable on `skills.sh`: https://www.qodo.ai/blog/how-i-use-qodos-agent-skills-to-auto-fix-issues-in-pull-requests/
- Gemini, Hermes, Kilo, Pi, Qodo, and other generated outputs all consume the same `SKILL.md` format or Agent Skills-compatible package shape.
- Shared source: `skills/`.

## Tasks
- Decide whether this should be a single shared Build with WordPress skills listing rather than per-agent submissions.
- Identify the current `skills.sh` / Agent Skills publication mechanism and required metadata.
- Prepare a publishable repository/path for the shared `skills/` tree if needed.
- Submit/list the shared skills and record the listing URL/status back in #45.

Review the shared skills/ tree and the Agent Skills requirements at agentskills.io, then investigate the current skills.sh publication mechanism and required metadata. Decide whether one shared Build with WordPress listing is sufficient, prepare the repository/path if needed, and submit the skills. Record the listing URL and status in #45.

Written by the indexing model from the issue text.