chore: bump Dependencies (#2881)

chore: upgrade eslint to v10 (#2880)

Fix sort thread list categories by date (#2872)

feat(elements): add polars support for dataframe elements (#2879)

test(cypress): stabilize, lint & format all tests to prepare for #2573 (#2877)

chore(frontend): declare pdfjs-dist as explicit frontend dependency (#2876)

docs(ai): upload research & AI docs updates (#2875)

chore(ai): sync agent/editor settings and Context7 library IDs (#2874)

feat: Add copilot sidebar mode with drag-to-resize (#2785)

fix: clear attachments when switching chat profiles (#2858)

feat: make stop icon and loading cursor customizable via CSS variables (#2866)

feat(i18n): add Portuguese (pt-PT) translation (#2840)

fix: handle Slack workflow/bot messages in app_mention events (#2844)

fix: show error toast when streamable-http MCP connection fails (#2831)

feat: added improved pdf viewer (#2833)