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/Research/WorldAssemblerM3/Linux47/CaptureLandmarkL47.py

@@ -14,7 +14,7 @@ import time
 
 
 ROOT = Path(__file__).resolve().parents[4]
-BASELINES = ROOT / "Standalone/Tools/verify/baselines"
+BASELINES = Path(os.environ.get("VOXELFORGE_VERIFY_OUT", ROOT / "Saved/Linux/l47")) / "baselines"
 VERIFY = ROOT / "Standalone/Tools/verify"
 LINUX37 = ROOT / "Standalone/Research/WorldAssemblerM3/Linux37"
 sys.path.insert(0, str(VERIFY))

Standalone/Research/WorldAssemblerM3/Linux47/MeasureEntranceL47.py

@@ -6,12 +6,13 @@ import importlib.util
 import argparse
 import json
 import math
+import os
 from pathlib import Path
 import sys
 
 
 ROOT = Path(__file__).resolve().parents[4]
-BASELINES = ROOT / "Standalone/Tools/verify/baselines"
+BASELINES = Path(os.environ.get("VOXELFORGE_VERIFY_OUT", ROOT / "Saved/Linux/l47")) / "baselines"
 PROFILE_PATH = ROOT / "Standalone/Research/WorldAssemblerM3/Linux32/AuditRingTerraceL32.py"
 spec = importlib.util.spec_from_file_location("ring_profile", PROFILE_PATH)
 if spec is None or spec.loader is None: