[brennanb2025]

	Files	Added	Deleted	Net
Test	4	$\color{#1a7f37}{\Huge{\mathbf{+}}}$​318	0	$\color{#1a7f37}{\Huge{\mathbf{+}}}$​318
Prod	8	$\color{#1a7f37}{\Huge{\mathbf{+}}}$​275	$\color{#cf222e}{\Huge{\mathbf{−}}}$​111	$\color{#1a7f37}{\Huge{\mathbf{+}}}$​164

Skeleton PR — plan only, no implementation yet. Stacked on #19787.

What this step does

Collapses the worktree card rollup and the 30-minute decay from three implementations into one in src/shared.

The three copies

Copy	Lines	Reads
renderer/src/lib/worktree-status.ts	222	the sidebar store
main/runtime/runtime-worktree-status-projection.ts	255	the hook snapshot
mobile/src/worktree/agent-row-display.ts	118	worktree ps rows

The mobile copy hand-copies the 30-minute constant rather than importing AGENT_STATUS_STALE_AFTER_MS, so the three can drift by edit as well as by logic.

isFreshNonDoneAgentStatus in shared/agent-status-freshness.ts is already shared and is the model — the rollup should sit beside it.

Why this is last

Only after PR 2b do all three read equivalent rows. Sharing the rollup before that unifies the arithmetic over inputs that still disagree, which hides the disagreement rather than removing it.

Watch item

Mobile currently ignores structuredHostOwned, so an owned structured row decays to idle there while the desktop keeps it. Pre-existing, not a regression from PR 1a — and this is the step where it stops being true, since the shared rule already handles the owned case.

Dependency

Stacked on #19787 (PR 2b).

[brennanb2025]

Live Electron validation of the whole stack — 7/7 PASS

First live run over any of these five steps, against the top of stack (4772ad30bb), which contains 1a → 1b → 2a → 2b → 3. Isolated dev instance, hidden renderer, CDP screenshots only. Instance ownership proved before any capture: devBranch = 4772ad30bb, private renderer port, and an /@fs body check (status codes alone are unreliable) — so these are provably screenshots of this stack.

#	Question	Verdict
1	Structured session shows a row and settles to done	PASS
2	Exactly ONE row per session	PASS
3	PTY terminal agent unaffected	PASS
4	worktree ps agrees with the sidebar, drops on tab close	PASS
5	Dashboard popout shows structured sessions (new)	PASS
6	Reload restores both row types	PASS
7	Dismiss removes the row from worktree ps immediately	PASS

The two that mattered most

Q5 is a new capability, not a preservation. The dashboard popout has never shown structured sessions — it's a separate React root that never mounted the renderer's status bridge. Removing the IPC filter is what gives it rows for the first time.

Q7 is an intended behavior change, and the CLI output verifies it rather than a screenshot: worktree ps --json went from 2 agents to 1 the moment the row was dismissed, with the PTY row gone and the structured row untouched. Previously a dismissed row lingered until the pty exited. One store means one dismissal.

Provenance is correct on both row types

Q3 and Q6 confirm the two paths stayed distinct through the refactor: the PTY row carries terminalHandle and no structuredHostOwned; the structured row carries structuredHostOwned: true and no terminalHandle. That is PR 1b's handle-based join and PR 2a's ownership mapping both intact, after a reload.

Working → settled, and CLI/sidebar parity

Two findings that are NOT stack defects

• On first popout open only the structured card showed. Not a dropped row — the published snapshot contained both; the dashboard's own showIdle: false filter hid the idle-bucketed PTY card. Driving a PTY turn rendered it. Pre-existing filter behavior.
• The sidebar's default compact display mode renders no trailing controls, so the Dismiss (X) is unreachable until you switch to full. Not introduced here, but worth knowing the affordance is compact-mode-invisible.

Gaps, stated rather than implied

Dev-mode instance under electron-vite (no packaged build). Claude structured route only — the Codex structured route was not exercised. Local folder workspace only: no SSH/remote host, no mobile client. A late turn hit an account-level 429 after all evidence was captured; the row still settled correctly.

[brennanb2025]

Closing as superseded, for the same reason as #19786 and #19787 — the lane was rebuilt and this stage is now written against a contract that postdates this branch.

What changed underneath it. The shared rollup and clock work now sits after the canonical store (#20717) and its producers, and depends on host-owned child work keyed by a host-minted childWorkId rather than on renderer-derived rows. The structured clock half is folded into the child-producer stage, which puts real turn and completion clocks on structured rows instead of overloading one timestamp.

Salvage. The shared selectors and rollup intent are carried into the reader-cutover stage, where all four readers move onto one set of host-fed selectors and the two parallel child-freshness rules become one shared decay rule.

Branch brennanb2025/agent-status-3-shared-rollup is retained; it is 339 commits behind main and rebasing it is not the intended path.