Tooling · Inspection: stalls count whole, the panel owns Tab, bound keys log

FpsMeter keeps the stamp before the last second, so a frame longer
than the span shows as the worst and a bar. The inspector's panel, a
second root out of the app's scope, sits in a FocusScope of its own,
so Tab goes on from Pick. EventLogger takes key downs through an
interceptor, which runs before bindings, and marks its box with a key
context to know focus is inside, so a field's Backspace and Enter log.
Tests hold the stall, Tab both ways through Pick, bound keys in a
field, a key while focus is outside, newest first and a bare border.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

AGENTS.md

@@ -204,9 +204,9 @@ Ely GPUI Component. A component library for GPUI, in light and dark.
 - A native view laid over the window takes AppKit's first responder on a press, and gpui's view never asks for it back, so typed text would go to the native view for good. The component hands the keyboard back on every press gpui gets and when the view leaves (`misc::WebView`, through wry's `focus_parent`); `Step::NativeKey` proves it, since gpui's own dispatch skips AppKit.
 - A map keeps places in `f64`: at zoom 19 the world is 134 million pixels across. Its wheel pans and Command or Control with the wheel zooms about the pointer, as the canvas's does. Its tiles stay in gpui's asset cache, as every `img()` picture does. Its popup is an overlay that is not modal: it takes focus when it shows, and the frame it stops showing, by any way out, hands focus back. Its layers, lines and areas unwrap across the date line and repeat on every world in view. Clustered pins gather by squares of the world, not of the view, so a pan never regroups them; a zoom may, so it hands a focused pin's or cluster's focus to the map.
 
-- gpui's inspector (debug builds) runs no mouse listener while picking and holds a pick on a press without a redraw, so Ely's panel requests a frame each render while picking (`tooling::install_inspector`). Its panel scrolls, so the box model it draws over the page goes through `primitives::raise`, which paints unclipped.
+- gpui's inspector (debug builds) runs no mouse listener while picking and holds a pick on a press without a redraw, so Ely's panel requests a frame each render while picking (`tooling::install_inspector`). Its panel scrolls, so the box model it draws over the page goes through `primitives::raise`, which paints unclipped. The panel is a second root, out of the app's scope, so it owns Tab through a `FocusScope` of its own.
 - A tool that measures redraws cannot move: any animation redraws the view it counts (`tooling::RenderCounter`). `AnyView::cached` renders again only on its own notify or a window refresh. A meter that counts frames keeps its view drawing while shown (`tooling::FpsMeter`).
-- A logger of input lays its canvas before what it holds, so its capture listeners run first and see what a child stops (`tooling::EventLogger`).
+- A logger of input lays its canvas before what it holds, so its capture listeners run first and see what a child stops. Key downs come through `App::intercept_keystrokes`, which runs before bindings, and a key context on its box tells it focus is inside (`tooling::EventLogger`).
 
 ## Decisions