plat 434

PLAT-434 — Code and Crew pages could not connect their panel on multi-user servers ("project's browser is disconnected")

Status: fixed on main (two causes); the first is deployed on Excellence (2026-10-04 08:45 CEST), the second is not. Found 2026-10-04 on Excellence, when Codex found perform_ui_action (PLAT-429) and the call was refused with "browser disconnected".

What was wrong

uiContractForScope (ui_control.go) chose the Crew/Code view list only when the scope did not start with _users/. On a multi-user server a project lives under _users/<id>/Chats/Code/projects/<p>, so it got the workflow view list. The Code page's register/renew call reports its current view (database, memory, skills, secrets, folders exist only in the project contracts); the server answered 409 invalid_state, never stored the binding, and the agent's action then saw no browser. The tool call itself used the Code contract directly, so it reached the server and failed at "no binding". Log signature: [UI-CONTROL] ... http_status=409 code=invalid_state right after a session_not_active burst on the project's session.

Fix

uiContractForScope asks isProjectWorkspacePath, which already reads a project with or without its _users/<id>/ prefix. Who may bind is still checked by the route (isOwnedWork: own prefix or no prefix), so no access changes. Test TestUIContractForScopeIgnoresUserPrefix (fails without the fix, for Code and Crew).

Second cause (found after the first fix was deployed)

The Code page reports the tab it shows as its "view". Its tabs include Terminal (shell), plan and suggestions, which are not in the Code/Crew contract (the agent cannot open them). The server refused any reported view outside the contract with 409 invalid_state, so a page showing one of those tabs never registered or renewed and the agent kept seeing "browser_disconnected". Fix: the reported view is an observation; the server accepts any well-formed view name (^[a-z][a-z0-9_-]{0,31}$). What an action may open is still limited to the contract. Test TestObservedUIViewIsAcceptedEvenWhenTheAgentCannotOpenIt.

Left

The same mistake keeps coming back for the same reason: see PLAT-435. After deploy, ask Codex on Excellence to open the Costs panel with the Code page open, once on the Terminal tab and once on another tab.