pstack: preserve interrogate model aliases

Author: cursoragent

pstack/skills/interrogate/SKILL.md

@@ -43,10 +43,10 @@ Launch all reviewers in a single message using the Task tool. Use the `interroga
 
 For each reviewer:
 - `subagent_type`: `generalPurpose`
-- `model`: the configured `interrogate reviewers` entry, or the table default with no configured line
+- `model`: the configured `interrogate reviewers` entry, or the table default with no configured line; omit `model` for `inherit-parent` or `auto`
 - `readonly`: `true`
 
-If a model slug is rejected as unresolvable when you try to spawn the subagent, check the valid slugs in the Task tool's error message, pick the closest equivalent (prefer the highest-reasoning tier of the same family), spawn with the valid slug, and open a separate PR to update the configured value or default table. Do not block the review on the slug issue.
+If a real model slug is rejected as unresolvable when you try to spawn the subagent, check the valid slugs in the Task tool's error message, pick the closest equivalent (prefer the highest-reasoning tier of the same family), spawn with the valid slug, and open a separate PR to update the configured value or default table. Do not block the review on the slug issue. Never treat `inherit-parent` or `auto` as model slugs or enter this fallback for them.
 
 Read `references/reviewer-prompt.md` and fill in the template with:
 1. The stated intent