enhance(#2295): record the resolved model per reviewer in REVIEWS.md frontmatter (#3649)

* test(#2295): failing-first coverage for per-lane resolved-model recording

* feat(#2295): record the resolved model per reviewer lane

* docs(#2295): document the recorded reviewer model and its provenance

* fix(#2295): refuse control characters in a recorded model value

* test(#2295): correct watermark assertions for the widened mark shape

* fix(#2295): anchor the role-manipulation injection pattern at a word boundary

* feat(#2295): record the applied reasoning effort in the model value

* chore(#2295): backfill changeset pr number

* chore(#2295): restore em-dash in changeset body

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Co-authored-by: sim <sim@local>

src/security.cts

@@ -214,7 +214,7 @@ export const INJECTION_PATTERNS: RegExp[] = [
 
   // Role/identity manipulation
   /you\s+are\s+now\s+(?:a|an|the)\s+/i,
-  /act\s+as\s+(?:a|an|the)\s+(?!plan|phase|wave)/i,
+  /\bact\s+as\s+(?:a|an|the)\s+(?!plan|phase|wave)/i,
   /pretend\s+(?:you(?:'re| are)\s+|to\s+be\s+)/i,
   /from\s+now\s+on,?\s+you\s+(?:are|will|should|must)/i,