Submit joins the admission queue first and sends the PAT only once the
reservation is held. Queued state shows the shaping orb, ordinal position
with estimate, and an exit button whose label changes with the wait;
running switches the orb to solving. Rejoin once on a lost reservation or
ticket, best-effort leave on pagehide. Mock server gains the queue
endpoints and five scenarios; contract, unit and e2e tests cover them.
The 180 s query cap was enforced independently by the backend clamp, the
agent limits, and the container supervisor. All three now follow
CONFLUENCE_WEB_MAX_DEADLINE_SECONDS (default 900, allowed 60-3600): the
backend passes it into the container at launch, the supervisor reads it and
forwards it to the bridge, and both fall back to 900 s on invalid input. The
query timeout must not exceed it (startup fails otherwise). The supervisor
keeps a separate 180 s guard for a container that never receives a start
frame.
Add assets/book.svg as the tab icon: the backend serves assets/ and the CSP
allows same-origin images (the sanitizer still never emits <img>).
Static frontend with vendored marked/DOMPurify, bounded Markdown
pipeline, same-origin mock server with scenario selection, unit,
contract and CDP end-to-end tests under frontend/**.
