Adds client-capability-gated tool availability: gateway clients declare
capabilities at connect (new inline-widgets cap), chat.send stamps them into
the run context, and every tool assembly path (embedded runner, queued
followups, Codex app-server harness, plugin-only construction plans) drops
tools whose requiredClientCaps the originating client did not declare. The
Canvas plugin ships the first such tool, show_widget: agents pass SVG or an
HTML fragment plus a title; the plugin hosts it as a bounded, retention-scoped
Canvas document and returns the existing canvas preview handle, which web chat
renders as a sandboxed iframe fitted to the widget's reported content height.
Widget frames never get allow-same-origin (per-preview sandbox ceiling,
including the sidebar path) and the Canvas host serves widget documents with a
CSP sandbox header so direct navigation runs in an opaque origin. Verified
live end-to-end on a Testbox with gpt-5.5 (screenshots on the PR). CLI-backed
model backends do not carry client caps yet and stay fail-closed (#102577).
Closes#101790
* fix(control-ui): keep the dashboard mounted with a reconnect banner on gateway drops
Once a session is established, a dropped gateway WebSocket no longer
unmounts the dashboard into the login gate. The client's close handler
now reports willRetry (the same fact that drives its reconnect
scheduling), the gateway store derives a `reconnecting` snapshot state
from it (everConnected && willRetry), and the app shell stays mounted
with an amber "Gateway connection lost - reconnecting" banner plus a
Retry now action while the client retries with backoff. The login gate
is reserved for first connects, credential rejections, and manual gate
submissions; event-gap recovery also no longer flashes the gate.
createApplicationGateway moved from bootstrap.ts to gateway-store.ts
with an injectable client factory for direct behavior tests. Adds the
previously unstyled `.callout.warn` variant and a "Connection loss and
reconnect" docs section.
Fixes#100475
* chore(i18n): regenerate control-ui locale bundles for connection banner strings
* chore(control-ui): unbreak CI - add reconnecting to overlays snapshot fixture, regenerate docs map
* chore(i18n): re-sync locale metadata after rebase onto refreshed main locales
* chore(i18n): refresh raw-copy baseline after rebase
Refactor the Control UI around route-owned page lifecycle and state while preserving existing behavior and design.
Prepared head SHA: bd51b6fa76
Co-authored-by: Shakker <165377636+shakkernerd@users.noreply.github.com>
Reviewed-by: @shakkernerd
