feat(wbs): WBS M4/M5 C# domain engines & Vue 3 PrimeVue AG-Grid migration [WBS-10]

docs/archive/DOTNET_RENDERER_OPERATING_STATUS.md

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+# .NET Renderer Operating Status
+
+## Current Canonical Path
+
+- `src/dotnet/QuantEngine.Tools/Program.cs`
+- `src/dotnet/QuantEngine.Tools/QuantEngine.Tools.csproj`
+
+## Current Outputs
+
+- `Temp/operational_report.json`
+- `Temp/operational_report.md`
+- `Temp/final_decision_packet_v4.json`
+
+## Legacy Path
+
+- `tools/render_operational_report.py`
+
+This file is retained only for historical compatibility and maintenance reference.
+It is not used in the operating or CI path.
+
+## Operational Rules
+
+- CI and release flows must use the .NET renderer path.
+- Report consumers may continue to read `Temp/operational_report.md` and `Temp/operational_report.json`.
+- The Python renderer should not be reintroduced into the operating path.
+
+## Verification
+
+- `dotnet build src/dotnet/QuantEngine.sln -c Debug`
+- `python tools/validate_json_generator_outputs_v1.py`
+- `python tools/validate_report_packet_sync_v1.py --packet Temp/final_decision_packet_active.json --report Temp/operational_report.json`