…-patch

Fix issue #459 - mysql error 2014

Adopt the apache-steward apache#460 "canonical .agents/skills, relay other
agents into it" model and move every agent skill — the repo's own and
the magpie framework ones — to a single canonical home so they are
discoverable by the whole shared-path agent cluster (Codex, Cursor,
Gemini CLI, Copilot, OpenCode, …) alongside Claude Code and GitHub:

- `.agents/skills/<skill>` is the canonical entry; `.github/skills/`
  and `.claude/skills/` carry per-skill relay symlinks pointing into it.
- Relocate the repo's own skills (`aip-user-stories`,
  `airflow-translations`, `prepare-providers-documentation`) and the
  committed `magpie-setup` bootstrap copy from `.github/skills/` to
  `.agents/skills/`, with relays from `.github`/`.claude`.
- Refresh the committed `magpie-setup` bootstrap from
  apache/airflow-steward main (the apache#460 canonical-.agents model;
  `conventions.md` merged into `agents.md`).

Re-point the prek hooks and tooling that anchored on `.github/skills/...`
at the new `.agents/` location — full/short license headers,
blacken-docs, codespell, inclusive-language, markdownlint, lychee, the
translation-namespace sync trigger, and the hardcoded SKILL.md path in
`sync_translation_namespaces.py`. prek skips symlinks, so only the real
files (now under `.agents/`) are processed. Add `.gitignore` negations
so the `.claude/skills/` relays stay tracked, and update the
provider-release doc path reference.

Adopt the apache-steward #460 "canonical .agents/skills, relay other
agents into it" model and move every agent skill — the repo's own and
the magpie framework ones — to a single canonical home so they are
discoverable by the whole shared-path agent cluster (Codex, Cursor,
Gemini CLI, Copilot, OpenCode, …) alongside Claude Code and GitHub:

- `.agents/skills/<skill>` is the canonical entry; `.github/skills/`
  and `.claude/skills/` carry per-skill relay symlinks pointing into it.
- Relocate the repo's own skills (`aip-user-stories`,
  `airflow-translations`, `prepare-providers-documentation`) and the
  committed `magpie-setup` bootstrap copy from `.github/skills/` to
  `.agents/skills/`, with relays from `.github`/`.claude`.
- Refresh the committed `magpie-setup` bootstrap from
  apache/airflow-steward main (the #460 canonical-.agents model;
  `conventions.md` merged into `agents.md`).

Re-point the prek hooks and tooling that anchored on `.github/skills/...`
at the new `.agents/` location — full/short license headers,
blacken-docs, codespell, inclusive-language, markdownlint, lychee, the
translation-namespace sync trigger, and the hardcoded SKILL.md path in
`sync_translation_namespaces.py`. prek skips symlinks, so only the real
files (now under `.agents/`) are processed. Add `.gitignore` negations
so the `.claude/skills/` relays stay tracked, and update the
provider-release doc path reference.