Validate pair content seed rerolls

docs/prompt-architecture-improvement-plan.md

@@ -27,7 +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 and pose-only reroll behavior.
+  prove locked determinism, content-only reroll behavior, and pose-only reroll
+  behavior.
 
 ## Architectural Finding
 
@@ -646,7 +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 and pose-only hard-action rerolls.
+  simulator now checks locked pair determinism, content-only soft outfit
+  rerolls, and pose-only hard-action 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 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,
   scene, soft outfit, and composition axes stable;
 - pose-axis rerolls changing cast/scene metadata or failing to move pose/action

tools/prompt_map_audit.py

@@ -94,6 +94,10 @@ AUDIT_DOC_SNIPPETS: tuple[tuple[str, str], ...] = (
         "docs/prompt-pool-routing-map.md",
         "pair seed determinism for Insta/OF metadata",
     ),
+    (
+        "docs/prompt-pool-routing-map.md",
+        "pair content rerolls changing soft outfit/teaser content",
+    ),
     (
         "docs/prompt-pool-routing-map.md",
         "pair pose rerolls changing hardcore action metadata",

tools/prompt_route_simulation.py

@@ -936,6 +936,7 @@ def _pair_seed_snapshot(pair: dict[str, Any]) -> dict[str, Any]:
         "soft_scene_text": soft_row.get("scene_text"),
         "hard_scene_text": hard_row.get("scene_text"),
         "soft_item": soft_row.get("item"),
+        "soft_pose": soft_row.get("pose"),
         "hard_item": hard_row.get("item"),
         "hard_position_key": hard_row.get("position_key"),
         "hard_position_keys": hard_row.get("position_keys") or [],
@@ -1105,6 +1106,53 @@ def _pair_seed_pose_reroll_check(seed: int) -> dict[str, Any]:
     }
 
 
+def _pair_seed_content_reroll_check(seed: int) -> dict[str, Any]:
+    name = "pair_seed.content_reroll"
+    base = _pair_seed_probe(seed)
+    base_snapshot = _pair_seed_snapshot(base)
+    changed = False
+    changed_seed = None
+    changed_field_names: list[str] = []
+    issues: list[str] = []
+    stable_fields = (
+        "shared_cast_descriptors",
+        "soft_cast_descriptor_text",
+        "hard_cast_descriptor_text",
+        "soft_scene_text",
+        "hard_scene_text",
+        "hard_item",
+        "hard_position_key",
+        "hard_source_role_graph",
+        "soft_composition",
+        "hard_composition",
+    )
+    changed_fields = ("soft_item", "soft_pose")
+    for reroll_seed in range(seed + 1, seed + 16):
+        rerolled = _pair_seed_probe(seed, reroll_axis="content", reroll_seed=reroll_seed)
+        rerolled_snapshot = _pair_seed_snapshot(rerolled)
+        field_issues = _same_fields_issues(name, base_snapshot, rerolled_snapshot, stable_fields, reroll_seed)
+        if field_issues:
+            issues.extend(field_issues)
+            break
+        changed_field_names = [
+            field for field in changed_fields if base_snapshot.get(field) != rerolled_snapshot.get(field)
+        ]
+        if changed_field_names:
+            changed = True
+            changed_seed = reroll_seed
+            break
+    if not changed:
+        issues.append("pair content reroll did not change soft_item or soft_pose within 15 attempts")
+    return {
+        "name": name,
+        "base": _row_summary(base.get("softcore_row") or {}),
+        "changed": changed,
+        "changed_seed": changed_seed,
+        "changed_fields": changed_field_names,
+        "issues": issues,
+    }
+
+
 def _seed_axis_checks(seed: int) -> list[dict[str, Any]]:
     return [
         _seed_determinism_check(seed),
@@ -1144,6 +1192,7 @@ def _seed_axis_checks(seed: int) -> list[dict[str, Any]]:
 def _pair_seed_checks(seed: int) -> list[dict[str, Any]]:
     return [
         _pair_seed_determinism_check(seed),
+        _pair_seed_content_reroll_check(seed),
         _pair_seed_pose_reroll_check(seed),
     ]
 

tools/prompt_smoke.py

@@ -7918,7 +7918,7 @@ def smoke_prompt_route_simulation_policy() -> None:
     _expect(summary.get("cases") == 14, "Prompt route simulation case count changed unexpectedly")
     _expect(summary.get("coverage_checks") == 2, "Prompt route simulation lost family coverage checks")
     _expect(summary.get("axis_checks") == 6, "Prompt route simulation lost axis check coverage")
-    _expect(summary.get("pair_seed_checks") == 2, "Prompt route simulation lost pair seed check coverage")
+    _expect(summary.get("pair_seed_checks") == 3, "Prompt route simulation lost pair seed check coverage")
     _expect(summary.get("issues") == 0, f"Prompt route simulation reported issues: {report.get('issues')}")
     cases = {case.get("name"): case for case in report.get("cases") or []}
     for route_name in (
@@ -7981,7 +7981,7 @@ def smoke_prompt_route_simulation_policy() -> None:
     ):
         _expect(axis_checks[check_name].get("changed") is True, f"{check_name} should prove its axis can reroll")
     pair_seed_checks = {check.get("name"): check for check in report.get("pair_seed_checks") or []}
-    for check_name in ("pair_seed.locked_determinism", "pair_seed.pose_reroll"):
+    for check_name in ("pair_seed.locked_determinism", "pair_seed.content_reroll", "pair_seed.pose_reroll"):
         check = pair_seed_checks.get(check_name) or {}
         _expect(check, f"Prompt route simulation lost pair seed check {check_name}")
         _expect(not check.get("issues"), f"Prompt route simulation pair seed check reported issues: {check_name}")
@@ -7989,6 +7989,10 @@ def smoke_prompt_route_simulation_policy() -> None:
         pair_seed_checks["pair_seed.locked_determinism"].get("changed") is False,
         "Pair locked determinism check should not be a reroll",
     )
+    _expect(
+        pair_seed_checks["pair_seed.content_reroll"].get("changed") is True,
+        "Pair content reroll should prove soft outfit/content can reroll while hard action stays locked",
+    )
     _expect(
         pair_seed_checks["pair_seed.pose_reroll"].get("changed") is True,
         "Pair pose reroll should prove hard action can reroll while soft/cast/scene axes stay locked",