agent web UI: add terminal verbosity setting (expand tool output by default)

Adds a browser-local (localStorage only, no backend field) toggle in
the per-agent overflow menu's new settings section: whether otherwise-
collapsed <details> rows in the live terminal (long tool-results,
Write/Edit diffs, ...) default open. Message-bearing rows that already
default open (send/ask/answer/recv) are unaffected either way.

The shared terminal factory (frontend/packages/shared/src/terminal/terminal.js)
gains an optional expandDetails option (boolean or zero-arg function),
read live on every details()/detailsDiff() call rather than captured
once, so flipping the toggle mid-session applies to the next rendered
row without a reload. Unused by the dashboard's own terminal pane, so
its default-closed behaviour is unchanged.

Closes #2961.
This commit is contained in:
iris 2026-08-02 18:25:45 +02:00
commit 198db326b3
5 changed files with 94 additions and 1 deletions

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@ -101,6 +101,16 @@ through. Three flex columns:
the `/effort <level>` slash command). The active level's button is
highlighted; `renderEffortChip` keeps the picker in sync with
`StateSnapshot.effort` from the cold-load snapshot.
A third separator + **settings** section holds a single
`role="menuitemcheckbox"` toggle, `☐/☑ expand tool output` — flips
whether otherwise-collapsed `<details>` rows in the terminal (long
tool-results, Write/Edit diffs, …) default open. Pure client-side:
persisted to this browser's `localStorage` only (no backend field,
no `/api/*` call), read live by the shared terminal factory's
`expandDetails` option (see docs/web-ui/shape.md::Shared terminal
pane) so toggling mid-session applies to the next rendered row
without a reload. Rows that already default open regardless (send /
ask / answer / recv) are unaffected either way.
The popover's display rules are scoped to `:not([hidden])` so the
`[hidden]` HTML attribute's UA `display: none` isn't overridden by
the author CSS's `display: flex` — the popover stays hidden until

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@ -115,7 +115,11 @@ event picture), `onBackfillDone?(count)` (one-shot after replay; `count=0` on
failed/skipped fetch), `onStreamOpen?()` (fires on every EventSource
(re)connect — use to re-sync snapshot-derived state after a reconnect gap),
`pillAnchor?` (parent element for the "↓ N new" pill; defaults to
`logEl.parentElement`).
`logEl.parentElement`), `expandDetails?` (boolean or zero-arg function
returning one, re-read on every `api.details`/`api.detailsDiff` call rather
than captured once — lets a page default otherwise-collapsed panels open
per a live browser-local preference; renderers that force a row open
regardless, e.g. message-bearing tool_use, are unaffected either way).
**Sticky-bottom + snap animation.** `stickToBottom` is the
operator's intent: true means "keep snapping to bottom on every