[jaromil]

Summary

• embed the complete dashboard/ tree and serve it at /dashboard
• inject the running server's configured statistics endpoint into the dashboard
• add optional native persistence through --stats-state or STATS_STATE_PATH
• validate and restore the retained seven-day history and cumulative counters at startup
• checkpoint to an atomic mode-0600 file every minute and after request processing stops during graceful shutdown
• preserve invalid state files unchanged while allowing the server to start with empty statistics
• configure the container image to use /run/conspire/stats.json and document named-volume/systemd state directories

Chart.js remains the dashboard's existing CDN dependency.

Verification

• static GCC/musl make build with ccache
• cmake --build --preset native-gcc && ctest --preset native-gcc — 3/3 passed
• npm run test:e2e — 4/4 passed, including a real two-process persistence restart
• npm run test:e2e:browser — passed
• npm run check:web — 14/14 passed
• npm run coverage:browser — 95% lines, 93.94% branches
• ./scripts/check-release-contract.sh
• ./scripts/container-smoke.sh --verify-only
• ./scripts/run-static-analysis.sh

Known toolchain note

The optional Clang preset is still blocked by oatpp 1.4 variadic macros triggering Clang 19 C++20-extension diagnostics under -Werror; the GCC/native and release GCC/musl paths pass.