Validate pair seed axis rerolls

docs/prompt-architecture-improvement-plan.md

@@ -27,8 +27,8 @@ The map audit currently sees:
   every registered action and position family except documented special cases
   covered by dedicated smoke fixtures.
 - Pair seed simulation, so Insta/OF soft/hard metadata and formatter outputs
-  prove locked determinism, content-only reroll behavior, and pose-only reroll
-  behavior.
+  prove locked determinism and person/scene/content/pose/expression/
+  composition reroll behavior.
 
 ## Architectural Finding
 
@@ -647,8 +647,8 @@ Near-term:
 - Keep same-room pair continuity synchronized in both assembled prompt text and
   `hardcore_row.scene_text`; `tools/prompt_smoke.py` covers this drift case.
 - Keep pair seed behavior synchronized across soft/hard rows; the route
-  simulator now checks locked pair determinism, content-only soft outfit
-  rerolls, and pose-only hard-action rerolls.
+  simulator now checks locked pair determinism and person, scene, content,
+  pose, expression, and composition rerolls.
 
 Medium-term:
 

docs/prompt-pool-routing-map.md

@@ -1006,6 +1006,8 @@ issues for:
 - route-family coverage for registered action and position families, excluding
   only documented special cases that have their own smoke fixtures;
 - pair seed determinism for Insta/OF metadata and formatted soft/hard outputs;
+- pair person, scene, expression, and composition rerolls changing only their
+  intended soft/hard metadata axes;
 - pair content rerolls changing soft outfit/teaser content while keeping cast,
   scene, hard action, and composition axes stable;
 - pair pose rerolls changing hardcore action metadata while keeping cast,