pstack model configuration

Per-role model overrides for pstack skills. Each pstack SKILL.md names its defaults in a Models section; the values here override those defaults. Delete a line to fall back to the skill default. A value of inherit-parent or auto runs that role on the parent session's model (the Agent call omits model); an alias entry in a panel list still counts toward that panel's fan-out. session hook: off stops the Claude Code or Codex SessionStart hook from injecting the poteto-mode mandate; any other value, or no line, leaves it on.

feature, refactoring: opus bug-fix: opus perf-issue: opus hillclimb: opus judgment and prose: opus strongest judgment: opus how explorer: opus how explainer: opus why investigators: opus why synthesizer: opus reflect tooling: opus reflect judgment, divergent, synthesizer: opus arena runners: opus, sonnet arena cross-judge pool: opus, sonnet swarm workers: opus architect runners: opus, sonnet interrogate reviewers: opus, sonnet

session hook: on