Two bugs combined to make the footer Close a no-op:
1. The helper page_link's anchor carries
``data-testid="stPageLink-NavLink"`` — the bare
``stPageLink`` testid is on the OUTER WRAPPER div, not the
anchor. The old selector ``a[data-testid="stPageLink"]``
matched nothing, so ``helper`` was always ``null``.
2. The fallback ``window.location.href = './close'`` ran inside
the component iframe, so it only navigated the (invisible)
srcdoc iframe. The main app stayed put.
End result: click → nothing visible → shutdown_app never runs →
farewell-script's ``window.close()`` attempt never happens →
user sees the Close button as broken.
Fixes:
- Selector → ``a[data-testid="stPageLink-NavLink"][href*="close"]``.
``href*="close"`` covers both root (/close) and base-path
(/myapp/close) deployments.
- Fallback → resolve the parent window via
``doc.defaultView`` (the parent doc's window) with a
``window.top`` fallback, so the hard-nav navigates the whole
app instead of just the iframe.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Michael
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