APM Spec Guardian -- Four-Panel Advisory Review for OpenAPM

This skill institutionalizes the two-round adversarial spec review that produced OpenAPM v0.1 by hand. The panel is FAN-OUT + SYNTHESIZER. Each panelist runs in its own agent thread (via the task tool) and returns JSON matching assets/panelist-return-schema.json. The orchestrator schema-validates each return, hands all returns to the spec-editor-synthesizer (also a task thread, returns JSON matching assets/synthesizer-return-schema.json), runs the linter checklist in assets/linter-checklist.md, then renders ONE comment from assets/comment-template.md.

This skill is ADVISORY by design. It does not compute a binary verdict, it does not apply verdict labels, and it does not gate merge. The panel surfaces findings; the maintainer ships.

Activation scope