fix: list_pages should work after selected page is closed

[atian8179]

Problem

After closing the currently selected page, calling list_pages throws an error:

The selected page has been closed. Call list_pages to see open pages.

This creates a deadlock: the error message tells users to call list_pages, but list_pages itself throws the same error.

Root Cause

list_pages is defined with definePageTool, which marks it as pageScoped: true. The handler dispatch in index.ts (line ~186) calls context.getSelectedMcpPage() for all page-scoped tools before invoking the handler. When the selected page is closed, getSelectedPptrPage() throws.

However, list_pages doesn't actually use the page parameter — its handler only calls response.setIncludePages(true).

Fix

Change list_pages from definePageTool to defineTool. This bypasses the page-scoped check while preserving all existing behavior since the handler never used the page reference.

Testing

Reproduced the issue following the steps in #1138:

1. Call list_pages → returns page list ✅
2. Close the selected page
3. Call list_pages → now returns updated page list instead of throwing ✅

Fixes #1138

[google-cla]

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[zyzyzyryxy]

Thank you for your contribution! The fix looks good, however we need your CLA status cleared first and there are some tests that need updating.

[atian8179]

Thanks for the review! I've:

1. Signed the Google CLA — should be cleared now
2. Added a test for the fix: verifies list_pages works after the selected page is closed externally (the core scenario from list_pages tool breaks in v0.19.0 when used after closing the selected page #1138)
3. Rebased onto latest main

Please let me know if anything else needs updating.

[zyzyzyryxy]

The cla/google check is still failing - please see its description for a checklist of what is still needed - I think it might be about different email being associated with your commits than what you provided.

Also, tests in tests/tools/pages.test.ts need an update, they stopped compiling after your change. It should be enough to remove an extra page parameter in a few places.

[atian8179]

Updated — removed the extra page parameter from all listPages / listPageDef handler calls in the tests. Since list_pages is now a regular tool (not page-scoped), its handler no longer accepts the page field.

Regarding CLA: I'll check the email association and re-sign if needed.

[zyzyzyryxy]

CLA seem to be sorted out, but there are still some checks failing. Please review them and fix.