Request
User feedback: no way to see CPU/memory history globally (system-wide over time) — only per-process (the process popup's charts) or per-process "top consumers" aggregation (the History view) exist today.
What's already there
`HistorySample` (src/core/services/history_store.hpp) already records system-wide aggregates every tick — `cpu_usage`, `memory_used`/`memory_total`, `per_cpu_user`/`per_cpu_system` — so the data collection side needs no changes. This is a UI-only gap: nothing currently queries/charts these system-level fields over time (HistoryStore's existing query methods are all process/pid-oriented).
Scope
Add a new HistoryStore query method returning a system-level time series, and a chart/panel to display it (could live in the existing History view as a new mode, or its own panel). Fairly contained once scoped.
Request
User feedback: no way to see CPU/memory history globally (system-wide over time) — only per-process (the process popup's charts) or per-process "top consumers" aggregation (the History view) exist today.
What's already there
`HistorySample` (src/core/services/history_store.hpp) already records system-wide aggregates every tick — `cpu_usage`, `memory_used`/`memory_total`, `per_cpu_user`/`per_cpu_system` — so the data collection side needs no changes. This is a UI-only gap: nothing currently queries/charts these system-level fields over time (HistoryStore's existing query methods are all process/pid-oriented).
Scope
Add a new HistoryStore query method returning a system-level time series, and a chart/panel to display it (could live in the existing History view as a new mode, or its own panel). Fairly contained once scoped.