core: coarser smooth-route tolerance + shell support bound (L119, evaluator v224)

Chord error 2.5 -> 10 cm, shell work skipped outside the 0-0.75 m band. Sweep pairs -39%, prepare -60%,
near-ready 3-8% faster than L115 but still +13..+22% vs L109. Floor offset 7.88 mm; captures match L115
by eye; fast tier, walk audits, Clang/GCC W1/W8/W12 determinism green. Not for merge yet.

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

Standalone/Research/WorldAssemblerM3/Linux119/RunL119Captures.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+"""Render the L115 view set with the L119 candidate binaries."""
+from __future__ import annotations
+
+import importlib.util
+import json
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[4]
+RESEARCH = Path(__file__).resolve().parent
+SPEC = importlib.util.spec_from_file_location(
+    "l115_capture_runner", ROOT / "Standalone/Research/WorldAssemblerM3/Linux115/RunL115Captures.py")
+if SPEC is None or SPEC.loader is None:
+    raise SystemExit("cannot load the L115 capture view definitions")
+RUNNER = importlib.util.module_from_spec(SPEC)
+SPEC.loader.exec_module(RUNNER)
+
+# Reuse L115's exact camera and station definitions, while rendering through L119.
+RUNNER.CAPTURES = RESEARCH / "captures/L119"
+RUNNER.SAVED = ROOT / "Saved/Linux/l119/captures"
+RUNNER.HELPERS.RESEARCH = RESEARCH
+RUNNER.BINARIES = {
+    "L115": ROOT / "Saved/Linux/l119/bin/VoxelForgeCoreHeadless-l119-clang"}
+RUNNER.RENDERERS = {
+    "L115": ROOT / "Saved/Linux/l119/bin/VoxelForgeOffscreenCapture-l119-clang"}
+RUNNER.HELPERS.BINARIES = RUNNER.BINARIES
+RUNNER.HELPERS.RENDERERS = RUNNER.RENDERERS
+
+
+def main() -> int:
+    result = RUNNER.main()
+    if result != 0:
+        return result
+    index = RUNNER.CAPTURES / "capture-index.json"
+    document = json.loads(index.read_text(encoding="utf-8"))
+    for row in document["captures"]:
+        row["variant"] = "L119"
+    index.write_text(json.dumps(document, indent=2) + "\n", encoding="utf-8")
+    markdown = RUNNER.CAPTURES / "INDEX.md"
+    lines = ["# L119 captures (L115 view set)", "",
+        "The 23 L115 camera poses were rendered with the L119 binary. Floor anchors "
+        "require an upward normal alignment of at least 0.85, target-to-floor distance "
+        "at most 0.25 m, and camera-to-floor distance between 2.0 and 3.2 m. Open-air "
+        "sections have outside and interior wall close-ups at 4 m.", ""]
+    for row in document["captures"]:
+        image = row["capture"].removeprefix("captures/L119/")
+        lines.append(f"- [{row['passage']} {row['station']}]({image}) — "
+            f"{row['kind']}; {row.get('drawn_triangles', 0)} triangles; "
+            f"{row['pixel_quality_status']}")
+    markdown.write_text("\n".join(lines) + "\n", encoding="utf-8")
+    return 0
+
+if __name__ == "__main__":
+    raise SystemExit(main())