wip: L175 fix tile seams - passage-affected X8 lanes use the composed path (v241, RED)

Seam audit: 0 mismatches over 16 seeds (99,269 pairs, 121.6M shared samples),
injected control detected. Step-2 overlap/turn failures remain. Mainline has the
same dispatch structure (not changed).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011g9Ez42ZNqQGjigc4FWDih

Standalone/Tools/verify/baselines/README.md

@@ -15,3 +15,5 @@ verification gates. The gates now read this tracked directory instead of
   level-end-run and passage-overlap changes.
 - `owner-hash/canonical/owner-hash-*-v240.baseline`: L174 canonical owner hashes after
   Design50 steps 1–2; step 0 retained the v239 geometry and hashes.
+- `owner-hash/canonical/owner-hash-*-v241.baseline`: L175 canonical owner hashes after
+  passage composition was made consistent across tile seams.

Standalone/Tools/verify/baselines/owner-hash/canonical/owner-hash-floating-islands-style2-v241.baseline

@@ -0,0 +1,12 @@
+[PipelineFullDetailHash] tiles=960 density=0x91931a57a067fd92 mesh=0xa818654be89790ac payload=0x370ff80451105a39 topology=0x06e507557aa70173
+[PipelineWholeViewHash] tiles=2370 density=0x661b0ed5e4c0295c mesh=0xaf52ebbe42f68030 payload=0x3391b41e1c0542f5 topology=0x85deb8c9f8e0676e
+[PipelineLODHash] lod=0 tiles=512 density=0x2fd4c78685a43cfe mesh=0x50478cff1c1f8ca0 payload=0x54e48e57e0af26de topology=0x860c011cfdb9833a
+[PipelineLODHash] lod=1 tiles=448 density=0x4b8d9a6dcd2942ad mesh=0x17e89b7087bfe711 payload=0x2389c109eb780db6 topology=0x7eccd4cf560d0630
+[PipelineLODHash] lod=2 tiles=320 density=0xf5dcecf9f4b95e55 mesh=0xf9d0320de1246253 payload=0x3390ce42cba05749 topology=0xc536d6371958f5dd
+[PipelineLODHash] lod=3 tiles=208 density=0x25c95480ee134e4c mesh=0xcc56bbe02e024573 payload=0xa54a32c0bd0b2a26 topology=0xf4508c7b069f9875
+[PipelineLODHash] lod=4 tiles=240 density=0xfb11591772a3d18e mesh=0xebf2baee8764591b payload=0xe491d7ac9c0061ad topology=0xd618ac33b95ce494
+[PipelineLODHash] lod=5 tiles=144 density=0x2f8b7b7fb1e67258 mesh=0x4cd508cbe97344fd payload=0x2b6e96a6050458c9 topology=0x4ff6d0eda8988573
+[PipelineLODHash] lod=6 tiles=96 density=0x0114a34c8b8d6113 mesh=0xb1fec4d01ae1fa44 payload=0x3e50cfd429b8e950 topology=0x08090c96d15c1618
+[PipelineLODHash] lod=7 tiles=96 density=0x3836ed8cfce73418 mesh=0x40bc6589c5fc1aac payload=0x677349bcae16790f topology=0x36e3aa53192e6a6b
+[PipelineLODHash] lod=8 tiles=306 density=0x144f3c1fd722708b mesh=0xef77b28bf7fd9453 payload=0xe3f47b37fcd61489 topology=0x5a3c73e295494e04
+[PipelineExactQueryHash] probes=9 density=0x7b7c50ac24ccadcc unclamped=0x7b7c50ac24ccadcc detail=0xefcba20c0c70c415 collision=0xe604823a249029bf path=direct-Core-queries

Standalone/Tools/verify/baselines/owner-hash/canonical/owner-hash-surface-world-style1-v241.baseline

@@ -0,0 +1,12 @@
+[PipelineFullDetailHash] tiles=960 density=0xace56c8f205238ad mesh=0xa9c603a1248de6b8 payload=0xea55f1f4fcc6a894 topology=0x5ea7bc78a1b678ae
+[PipelineWholeViewHash] tiles=2370 density=0xcea15df21f3de284 mesh=0x7f3af937f66b4120 payload=0x0df48eeb9c361f1e topology=0x187ec3b5fee288a7
+[PipelineLODHash] lod=0 tiles=512 density=0xcd6ab28cfa504aca mesh=0xf03dc80a669fca31 payload=0x397aded1c3d2d297 topology=0xb4a1dc84fabc1fe3
+[PipelineLODHash] lod=1 tiles=448 density=0xce6e713828b2a20a mesh=0x1cf408c25d67d18c payload=0x8a2b5d20571c997e topology=0x51cd985fe8e7d100
+[PipelineLODHash] lod=2 tiles=320 density=0x3d02f2de40ac17eb mesh=0xeb3260907c45cbea payload=0x742d68cef4e33d90 topology=0x94a5c298e959adab
+[PipelineLODHash] lod=3 tiles=208 density=0x4a840012d34cc75b mesh=0xd5672aef7e6c7166 payload=0x8f4b7d83b106ab63 topology=0xe7759acb1434b631
+[PipelineLODHash] lod=4 tiles=240 density=0x0be8798407724eaf mesh=0x131c303cbbe51434 payload=0x2a90ecf0a2411ca0 topology=0xe3e054a371152e08
+[PipelineLODHash] lod=5 tiles=144 density=0xf20897ad272103a9 mesh=0x13d00b6253ae1f72 payload=0x0db3880693a962fa topology=0x462bd87a80f15e89
+[PipelineLODHash] lod=6 tiles=96 density=0xc040fcac457d6313 mesh=0x1ed132eeb718fb62 payload=0xcd0214e35577c6e3 topology=0x2c56c69e6fdcfd64
+[PipelineLODHash] lod=7 tiles=96 density=0xc2d419446355fdb8 mesh=0x4ea44452574fc84b payload=0xfd9779bedfc9ae0f topology=0x8948546e770c9b72
+[PipelineLODHash] lod=8 tiles=306 density=0x62db31696f2da831 mesh=0xd373f9e9481532fe payload=0x540a60526e0e3e46 topology=0xc725cb901e6dc335
+[PipelineExactQueryHash] probes=9 density=0xc949c4df2ce6f9d9 unclamped=0xc949c4df2ce6f9d9 detail=0x114c501e2d830d94 collision=0xe6011d3a248d4849 path=direct-Core-queries

Standalone/Tools/verify/verify.py

@@ -125,11 +125,11 @@ RECIPE_RE = re.compile(
 
 def owner_hash_baseline(recipe: str, style: int) -> tuple[Path, str]:
     if recipe == "surface-world" and style == 1:
-        return (BASELINES / "owner-hash/canonical/owner-hash-surface-world-style1-v240.baseline",
-                "L174-v240-Design50-steps1-2")
+        return (BASELINES / "owner-hash/canonical/owner-hash-surface-world-style1-v241.baseline",
+                "L175-v241-passage-tile-seam-fix")
     if recipe == "floating-islands" and style == 2:
-        return (BASELINES / "owner-hash/canonical/owner-hash-floating-islands-style2-v240.baseline",
-                "L174-v240-Design50-steps1-2")
+        return (BASELINES / "owner-hash/canonical/owner-hash-floating-islands-style2-v241.baseline",
+                "L175-v241-passage-tile-seam-fix")
     raise VerificationFailure(f"no pinned owner hash baseline for {recipe} style {style}")