refactor: resolved metre layout is the runtime authority (L41, migration step 3); stamp covers plugin sources; R8

UVoxelStrateManager::Initialize resolves the layout width to integer micrometres before passages or
scheduling; each slot stores physical [bottom, top) bounds, transition mode/width and passage settings;
chunk indices remain a floor-based compatibility projection. The Core adapter derives interiors and L29
bands from those resolved values. verify: full-tier cost baseline is HEAD (or --baseline), tier timeout
7200 s with 1800 s per process; the source stamp now includes the plugin Source tree compiled on Linux
(it previously missed VoxelStrateManager.cpp and friends). Owner hashes identical to L37; fast, medium
and full PASS on a clean rebuild. Unreal manager/adapter edits are uncompiled on Windows.
Research R8: inventory of unit-bearing UPROPERTYs and a custom-version asset migration plan.

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

Standalone/Tools/verify/runner.py

@@ -55,8 +55,10 @@ def first_stamp(text: str) -> str | None:
 def bounded_run(command: list[str], *, timeout: int = 1800,
                 cwd: Path = ROOT, env: dict[str, str] | None = None,
                 stdout: Any = subprocess.PIPE) -> subprocess.CompletedProcess[str] | None:
+    timeout = min(1800, max(1, int(timeout)))
     try:
-        return subprocess.run([*LIMIT, "timeout", f"{timeout}s", *map(str, command)],
+        return subprocess.run([*LIMIT, "timeout", "--signal=KILL", f"{timeout}s",
+            *map(str, command)],
             cwd=cwd, env=env, stdout=stdout, stderr=subprocess.STDOUT,
             text=True, encoding="utf-8", errors="replace", timeout=timeout,
             check=False)