feat(gallery): refresh when other clients complete generations

[lstein]

Summary

An external program (e.g. a chatbot or script) that authenticates over REST and enqueues a generation with POST /api/v1/queue/default/enqueue_batch produced images that never appeared in an open web UI tab until reload: the gallery only refreshed on uploads, reconnects, and items the tab itself tracked.

Now the gallery runtime also listens for queue_item_status_changed and runs its existing coalesced/throttled invalidation (item lists, totals, boards and board counts) when an item completes that:

• belongs to the signed-in user (admins' copies of other users' events and everyone else's redacted copies are ignored; single-user mode accepts all), and
• was not enqueued by the web UI itself (origin not webv2:), whose results the queue runtime already routes in the enqueuing tab.

No auto-selection; that is a separate follow-up. The App composition injects the user and origin checks, so Gallery does not depend on Queue's origin format. getSessionUserId moved from the recall runtime into Identity so both App runtimes share it.

Related Issues / Discussions

None.

QA Instructions

• pnpm check:release (in invokeai/frontend/webv2): passes. Run on Node 24.18.0 (.nvmrc pins 22.14.0). ConceptRow.browser.test.tsx ("keeps a drag local to its row…") is flaky independent of this change: it also fails intermittently on unmodified main.
• Manual, multi-user server: open the UI as user A and show the gallery. From a script, log in as A (POST /api/v1/auth/login) and enqueue a graph with a single blank_image node (is_intermediate: false, optional board: {board_id}) and origin: "external:test". The image appears in the gallery and the board count updates without reload, both with and without a board. It is not auto-selected.

Review

Resolved: Gallery no longer imports Queue's event type or origin classifier (injected from App instead); comments state the limitation precisely; a test covers reading the session user per event; a new leaf module that entered the editor's initial source-owner graph was folded into Identity's session module.

Known limitation: items enqueued by the same user's other web UI tab or device still refresh only the enqueuing tab (unchanged behavior). Covering them here would double-refresh the enqueuing tab.

Checklist

• The PR has a short but descriptive title, suitable for a changelog
• Meaningful regression coverage added / updated where needed; obsolete tests/code removed
• Persisted-state and API changes include required migrations / compatibility validation
• Relevant performance/efficiency opportunities considered; material claims have evidence
• Material review findings resolved and relevant checks rerun
• Documentation added / updated (if applicable)
• Updated What's New copy (if doing a release after this PR)

🤖 Generated with Claude Code

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