Fix softcore branch pose seeding

tools/prompt_smoke.py

@@ -8277,7 +8277,7 @@ def smoke_prompt_route_simulation_policy() -> None:
     )
     _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",
+        "Pair pose reroll should prove soft pose or hard action can reroll while cast/scene axes stay locked",
     )
     sweep = prompt_route_simulation.run_simulation_sweep(seed=3901, count=3, seed_step=101, include_prompts=False)
     sweep_summary = sweep.get("summary") or {}
@@ -9263,6 +9263,68 @@ def smoke_node_scene_chain_registration() -> None:
         content_hard_seed_config.get("pose_seed") == 8899 and content_hard_seed_config.get("role_seed") == 8899,
         "Hardcore branch content_pose reroll did not reach hardcore pose and role seeds",
     )
+
+    def _soft_pose_pair(soft_pose_seed: int) -> dict[str, Any]:
+        soft_pose_seed_options = nodes["SxCPSceneLayerSeedOptions"]().build(
+            "softcore_branch",
+            "fixed",
+            soft_pose_seed,
+            "pose",
+            "same_for_all_rows",
+            "replace_layer",
+        )[0]
+        soft_scene_pose, hard_scene_pose, _summary, _metadata = nodes["SxCPSceneBranchPair"]().build(
+            scene,
+            "same_creator_same_room",
+            "hybrid",
+            branch_options=branch_options,
+            seed_options=soft_pose_seed_options,
+        )
+        soft_scene_pose = nodes["SxCPSoftcoreBranchOptions"]().build(
+            soft_scene_pose,
+            "same_as_hardcore",
+            "lingerie_tease",
+            True,
+            0.45,
+            "from_camera_config",
+            "compact",
+            "",
+            branch_options=branch_options,
+            seed_options=soft_pose_seed_options,
+        )[0]
+        hard_scene_pose = nodes["SxCPHardcoreBranchOptions"]().build(
+            hard_scene_pose,
+            "couple",
+            1,
+            1,
+            "hardcore",
+            True,
+            0.85,
+            "explicit_nude",
+            "from_camera_config",
+            "compact",
+            "balanced",
+            "",
+            branch_options=branch_options,
+        )[0]
+        return json.loads(nodes["SxCPScenePairOutput"]().build(soft_scene_pose, hard_scene_pose)[7])
+
+    soft_pose_pairs = [_soft_pose_pair(seed) for seed in (6677, 6678, 6679, 6680)]
+    soft_pose_items = {pair.get("softcore_row", {}).get("item") for pair in soft_pose_pairs}
+    soft_pose_values = {pair.get("softcore_row", {}).get("pose") for pair in soft_pose_pairs}
+    _expect(len(soft_pose_items) == 1, "Softcore branch pose reroll should not change softcore outfit/content")
+    _expect(len(soft_pose_values) > 1, "Softcore branch pose reroll did not change softcore pose")
+    for expected_seed, pose_pair in zip((6677, 6678, 6679, 6680), soft_pose_pairs):
+        soft_seed_config = pose_pair.get("softcore_row", {}).get("seed_config") if isinstance(pose_pair.get("softcore_row"), dict) else {}
+        hard_seed_config = pose_pair.get("hardcore_row", {}).get("seed_config") if isinstance(pose_pair.get("hardcore_row"), dict) else {}
+        _expect(
+            soft_seed_config.get("pose_seed") == expected_seed,
+            "Softcore branch pose seed did not reach softcore generator seed config",
+        )
+        _expect(
+            hard_seed_config.get("pose_seed") != expected_seed,
+            "Softcore branch pose seed leaked into hardcore generator seed config",
+        )
     choice_board_node = nodes["SxCPChoiceBoard"]()
     choice_board_output = choice_board_node.build(
         json.dumps(content_pair),