audit: phase 0 tooling for file-by-file 40250 porting

- refroot.py: one reference-root resolver (MT_40250_SOURCE, then manifest)
  used by every audit script; missing tree or fingerprint input is an error
- port_map.py: per-function inventory of active 40250 units plus the
  40250 Python root, status/queue/init/show/check, 40250: tag scan
- manifest: fix 18 wrong reference paths (Python UI now points at the
  40250 Client/Eternexus/root, not the m2dev assets/root), drop 2 deleted
  implementation files, move 64 prose test entries to evidence.commands
- first port-map entry: PythonPlayerEventHandler.cpp
- roadmap replaced by a batch/unit queue

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.agents/skills/metin2-40250-parity-audit/scripts/refroot.py

@@ -0,0 +1,30 @@
+"""Locate the 40250 reference source tree for the audit scripts.
+
+Order: `MT_40250_SOURCE` env var, then `reference_root` in `audit/manifest.json`
+(relative to the repository root). A missing tree is an error, never a silent fallback.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+from pathlib import Path
+
+
+def repo_root() -> Path:
+    return Path(__file__).resolve().parents[4]
+
+
+def reference_root(repo: Path | None = None) -> Path:
+    repo = (repo or repo_root()).resolve()
+    raw = os.environ.get("MT_40250_SOURCE")
+    if not raw:
+        manifest = json.loads((repo / "audit" / "manifest.json").read_text(encoding="utf-8"))
+        raw = manifest.get("reference_root", "")
+    if not raw:
+        raise SystemExit("40250 reference root not set: export MT_40250_SOURCE or set manifest reference_root")
+    path = Path(raw)
+    path = (path if path.is_absolute() else repo / path).resolve()
+    if not (path / "UserInterface").is_dir():
+        raise SystemExit(f"40250 reference root not found or incomplete: {path}")
+    return path