streaming: deeper ready queue + startup apply cap; tile-local mouth-support culling (L72)

- Unreal: ready queue depth 8 -> 16 (cap 4 worker-sets / 64), startup mesh-apply cap
  12 -> 24 within the unchanged 14 ms budget. Owner SW arrival, same 2,850 keys:
  initial set ready 4.78 -> 3.74 s, queue p95 123 -> 35 ms, request-to-apply p95
  139 -> 45 ms; walkable gate 1.07 -> 1.11 s; per-frame apply p95 0.73 ms.
- Core composer: mouth-support segments filtered by tile bounds, mouth relief result reused
  (route checks -80/-87% in passage tiles). Hashes identical W1/W8/W12, Clang and GCC.
- Opt-in per-tile composer counters. Verify control meshes stored as .xz (78.5 -> 18.4 MB).
- Fast tier 269 PASS.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1

Standalone/Tools/verify/verify.py

@@ -6,6 +6,7 @@ import argparse
 import atexit
 import hashlib
 import json
+import lzma
 import math
 import os
 from pathlib import Path
@@ -22,7 +23,8 @@ import zlib
 
 ROOT = Path(__file__).resolve().parents[3]
 VERIFY_DIR = ROOT / "Standalone/Tools/verify"
-BASELINES = VERIFY_DIR / "baselines"
+BASELINE_SOURCE = VERIFY_DIR / "baselines"
+BASELINES = BASELINE_SOURCE
 LINUX37 = ROOT / "Standalone/Research/WorldAssemblerM3/Linux37"
 LINUX47 = ROOT / "Standalone/Research/WorldAssemblerM3/Linux47"
 LINUX53 = ROOT / "Standalone/Research/WorldAssemblerM3/Linux53"
@@ -54,11 +56,25 @@ ARGS = PARSER.parse_args()
 if ARGS.sanitize and ARGS.tier != "full":
     PARSER.error("--sanitize is available only with the full tier; use the sanitize tier on its own")
 OUT = ARGS.out.resolve()
+BASELINES = OUT / "baselines"
 ROUND_NAME = OUT.name
 os.environ["VOXELFORGE_VERIFY_OUT"] = str(OUT)
 os.environ["PYTHONDONTWRITEBYTECODE"] = "1"
 sys.dont_write_bytecode = True
 
+
+def prepare_baselines() -> None:
+    """Copy pinned inputs into the output tree and expand compressed mesh fixtures."""
+    shutil.copytree(BASELINE_SOURCE, BASELINES, dirs_exist_ok=True)
+    for compressed in sorted(BASELINES.rglob("*.vfmesh.xz")):
+        expanded = compressed.with_suffix("")
+        expanded.parent.mkdir(parents=True, exist_ok=True)
+        with lzma.open(compressed, "rb") as source, expanded.open("wb") as target:
+            shutil.copyfileobj(source, target, 1024 * 1024)
+
+
+prepare_baselines()
+
 sys.path.insert(0, str(VERIFY_DIR))
 from owner_step import measure as measure_owner_step
 from runner import VerificationFailure, VerificationRunner, bounded_run