runtime

Merged Runtime tab — three collapsible sections (Luau VM, Engine memory, Heap history) that replace the older split Luau-VM + Memory tabs. The Luau VM section shows the heap and per-script timing; the Memory section shows CPU/GPU/ECS counters; Heap history is a bounded 120-sample sparkline. Refreshes at 5 Hz to match the faster of the two predecessor tabs.

Exports

• M.build(_state) -> any — build the zui widget tree for the tab.
• M.onCallback(callbackId: string, _data, _state) -> boolean — handle Force GC, Snapshot.
• M.label: string — tab title.
• M.refresh: number — refresh cadence in seconds (0.2).

Usage

local Runtime = require("@builtin::modules.engine.editor.system_tools.tabs.runtime")
local widget = Runtime.build(state)
Runtime.onCallback("runtime-luau-gc", nil, state)

Notes

• The Luau VM and Memory sections default to open; Heap history defaults to closed (it's supplementary).
• Heap-history is sampled every build (5 Hz when the tab is active), capped at 120 samples. Older samples slide off the front.
• "Force GC" calls the luauGcCollect global and invalidates the VM snapshot cache so the next refresh shows the post-GC heap.
• Per-script rows sort by avg_update_ms descending; the sort field is module-local and not currently surfaced as a control.