p7

This is a thin catalogue-entry skill that activates a "P7 Senior Engineer" persona within the PUA skill family. It is invoked when a user says `P7模式` or `方案驱动` (solution-driven), or when the P8 supervisor mode spawns it as a sub-task executor. Its stated workflow is solution-first: design an implementation plan with impact analysis, then implement the code, then run a three-question self-review, delivering results through a `[P7-COMPLETION]` marker under P8 supervision.

The skill itself is only a short pointer. The SKILL.md redirects to a detailed protocol at `../pua/references/p7-protocol.md` and says its core behavior follows the three red lines and narration protocol of the `/pua` core skill. It carries no scripts, no bundled references beyond that pointer, and no executable content, so its actual depth lives entirely in the upstream PUA protocol files that are not shipped with this entry.

Target users are developers already using the PUA plugin who want a structured, plan-then-implement engineering mode with built-in self-review, especially as an orchestrated sub-agent role. Because the entry is essentially a mode selector that defers to an external protocol, its usefulness depends on having the rest of the PUA skill family installed.