Specification: Workspace details card

Branch: gui/workspace-details | Created: 2026-10-10 Status: Implemented and verified Input: t3code's thread details card (host, editor, branch, PR with checks, Changes +N −N, lineage) as a card behind the header breadcrumb.

User scenarios and testing

User story 1: Know where a workspace is (P1)

Acceptance: Clicking the breadcrumb opens a card anchored below it. It shows the branch (or "Detached HEAD"; hidden outside git) and the ~ path, with the full path in its tooltip. Copy Path puts the full path on the clipboard and confirms with a check glyph for about a second. Open Folder hands the directory to the desktop's file handler. Running agents are listed when there are any.

User story 2: See the task and its pull request (P1)

Acceptance: For a task workspace, a section shows "Task · ". When the task has a PR, it shows #N and one status word: Merged, Closed, Checks failing, Checks running, Checks passing or Open, coloured by meaning. Activating that row opens the PR URL. Non-task workspaces hide the section.

User story 3: Jump from totals to the diff (P1)

Acceptance: The Changes row shows "…" and then +N −N in the diff colours, "No changes", or "Unavailable". The totals come from workspace.diff, read only when the card opens; a slower read from an earlier open cannot overwrite a newer one. Activating the row closes the card and opens the docked Changes panel (win.show-changes).

User story 4: Nothing to describe (P2)

Acceptance: Without a workspace the breadcrumb is inactive but keeps its look. Closing the last workspace closes an open card.

Requirements

• FR-001: details::details() derives the card from the cached snapshot and TaskIndex (pure, unit-tested PR status mapping); DetailsCard builds the rows once and refills them on every show.
• FR-002: The breadcrumb becomes a GtkMenuButton with the card as its popover; no new IPC, state or dependencies.
• FR-003: New symbolic icons signaltty-branch-symbolic and signaltty-pull-request-symbolic, filled shapes only so symbolic recolouring works.

Out of scope

Commit/push/PR actions, editor picker, lineage between orchestrator and workers, project scripts.

Success criteria

GTK test breadcrumb_opens_the_workspace_details_card covers: inactive without a workspace, the card's branch, path, task, #77 Checks passing, totals from workspace.diff, Copy Path, and the hand-off to the Changes panel. Popover captured in Xvfb in light and dark. scripts/verify.sh full passes.