* fix(issues): replace cursor-based pagination with page-number Search API
Problem
=======
Issue pagination (#8649) had two bugs:
1. Pages 6-16 were unreachable — clicking page 16 highlighted page 5;
clicking 6/7 did nothing. The old cursor-based approach
(updated:<CURSOR) broke with Search API's relevance sorting —
pages after the first few returned no items even though more
issues existed.
2. Issue numbers appeared out of order on loaded pages (e.g. #1082
between #1308 and #1499), because client-side sort used
updatedAt instead of issue number.
Root Cause
==========
The pagination used two separate GitHub API strategies:
- Initial page 0 load: REST endpoints (repos/:owner/:repo/issues,
repos/:owner/:repo/pulls) sorted by updatedAt
- Subsequent pages: Search API with cursor (updated:<DATE)
These two sources returned items in different orders, causing items
to go missing or appear on wrong pages across page boundaries.
Solution
========
1. Unified on GitHub Search API for all pages — initial load and
pagination both use search/issues?q=...&page=N, eliminating the
REST-vs-Search inconsistency.
2. Changed from cursor-based (update:<DATE) to page-number-based
pagination (page=N), which the Search API supports natively.
3. Switched client-side sort from updatedAt to issue number
(sortWorkItemsByNumber), matching GitHub's default Issues view.
4. Parallelized page fetches in handleLoadNextPage — clicking page
16 now fetches all intermediate pages concurrently (~2s) instead
of sequentially (~30s).
5. Cleaned up dead legacy gh issue list / gh pr list code path,
extracted quoteForSearch helper, shortened overlong comments.
Files changed: 11 files, +140/-127 lines
Closes#8649
* chore: remove unrelated merge formatting
---------
Co-authored-by: Jinjing <6427696+AmethystLiang@users.noreply.github.com>
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