* fix(browser): scope back/forward/reload/zoom/grab shortcuts to the originating split
With two browser panes visible in a split, Back, Forward, Reload, Hard
Reload, page zoom and Focus Address Bar fired in every visible pane. Main
forwarded these guest chords without the page id, and each split's active
pane subscribed. The renderer-side listeners for the same chords were also
window-wide per pane, so a key pressed in the toolbar (or in a terminal in
another split) reached every active browser pane.
Guest-forwarded chords now carry the originating browserPageId; preload
admits only well-formed payloads and each pane ignores ids that aren't its
own. Toolbar-path listeners use the same focused-split scope Find already
uses. The streamed remote pane's history chord moves onto that scoped hook.
Cmd/Ctrl+C grab (STA-3319) gets the same scope and no longer arms while a
text selection exists outside the browser pane, so copying from the native
chat transcript works again.
* refactor(browser): simplify split shortcut scoping per review
Drop the preload payload admission (main and preload ship together), fold
the three inline scope checks into browserChromeShortcutOwnsEvent, and
replace the outside-overlay selection check with a plain live-selection
rule so Cmd+C copies from surfaces that do not move split focus.
* refactor(browser): share one zoom command type and tidy shortcut comments
BrowserPageZoomEventDetail and BrowserPageZoomCommand were the same shape;
keep one in shared/browser-page-zoom.ts and route guest and local zoom
through a single handler.
* refactor(browser): narrow the zoom event with instanceof instead of a cast
* test(e2e): pin split-scoped browser shortcuts
Two browser splits (and a terminal beside a browser) now prove that Back,
Forward, Reload, Hard Reload, page zoom, Focus Address Bar, and the element
grab chord act only on the split that sent them, from both the guest page and
the browser toolbar. A native chat selection proves Cmd/Ctrl+C copies instead
of arming grab. Split fixtures move to a shared helper so both specs reuse them.
Jinwoo Hong
dfff3915c4