Skill `gpt-5-4-prompting` still targets GPT-5.4, retired from the rate card on 2026-08-31

The plugin's skill skills/gpt-5-4-prompting/ (name, SKILL.md frontmatter, and the reference docs under references/) is written around GPT-5.4, and agents/codex-rescue.md passes gpt-5.4-mini via --model.

With GPT-5.4 scheduled for removal on 2026-08-31, the agent's explicit --model gpt-5.4-mini will start failing, and the skill's name/guidance no longer matches any servable model.

Suggestion: update the default model references to a current model (e.g. the gpt-5.6 family) and either rename the skill or make its naming model-agnostic (e.g. codex-prompting) so it doesn't need a rename on every model turnover.

Observed in plugin version 1.0.6 (marketplace clone at HEAD db52e28).

Start by inspecting skills/gpt-5-4-prompting/, its SKILL.md frontmatter and references/, then check agents/codex-rescue.md for the explicit --model value. Update the model guidance to the selected current family and make the skill naming consistent, including any references affected by a rename. Done means the skill and rescue agent no longer target GPT-5.4 and their names and documentation agree.