Codex reliably triggers skills on its own, and the SessionStart hook
made the UX worse rather than better. Drop the Codex hook config and
its registration in the plugin manifest.
Bug: the SessionStart hook matcher in hooks-codex.json included "resume",
causing the superpowers bootstrap to re-fire on every Codex session resume.
Fix: align with Claude's hooks/hooks.json matcher "startup|clear|compact":
- drop "resume" (the bug: resume should not trigger re-bootstrap)
- add "compact" (so bootstrap re-injects after context compaction, like Claude)
Before: "matcher": "startup|resume|clear"
After: "matcher": "startup|clear|compact"