docs: .NET 렌더러 운영 상태와 검증 기준 정리

- 운영 상태 문서와 README를 .NET canonical renderer 기준으로 정리했습니다.
- 레거시 렌더러 비운영 선언과 감사/검증기 경로를 통일했습니다.
- 운영 보정 로직의 데이터 소스 반영을 정리했습니다.

tools/build_architecture_boundaries_v2.py

@@ -45,13 +45,13 @@ def _count_renderer_calcs(path: Path) -> int:
 def _count_reverse_dependencies(root: Path) -> int:
     count = 0
     for p in root.rglob("*.py"):
-        if p.name in ["render_operational_report.py", "build_architecture_boundaries_v2.py"]:
+        if p.name in ["build_architecture_boundaries_v2.py", "Program.cs"]:
             continue
         try:
             txt = p.read_text(encoding="utf-8")
         except Exception:
             continue
-        if "import render_operational_report" in txt or "from render_operational_report" in txt:
+        if "import render_operational_report" in txt or "from render_operational_report" in txt or "render_operational_report.py" in txt:
             count += 1
     return count
 
@@ -61,7 +61,7 @@ def main() -> int:
     ap.add_argument("--out", default=str(DEFAULT_OUT))
     args = ap.parse_args()
 
-    renderer = ROOT / "tools" / "render_operational_report.py"
+    renderer = ROOT / "src" / "dotnet" / "QuantEngine.Tools" / "Program.cs"
     harness = load_json(TEMP / "module_io_coverage_v1.json")
     artifact_chain = load_json(TEMP / "artifact_chain_hash_v4.json")
 
@@ -76,7 +76,7 @@ def main() -> int:
         "source_artifacts": [
             "Temp/module_io_coverage_v1.json",
             "Temp/artifact_chain_hash_v4.json",
-            "tools/render_operational_report.py",
+            "src/dotnet/QuantEngine.Tools/Program.cs",
         ],
     }
     save_json(args.out, result)