2.11.0

## What's Changed
* chore: introduce AI-assisted development to the project by @asvishnyakov in https://github.com/Chainlit/chainlit/pull/2864
* fix: prevent NOT NULL violation in update_thread when metadata is None by @mgquach in https://github.com/Chainlit/chainlit/pull/2855
* fix: use correct logging format specifier in OAuth state validation by @mgquach in https://github.com/Chainlit/chainlit/pull/2841
* fix: Issue with accordion requiring two clicks to close by @Allaoua9 in https://github.com/Chainlit/chainlit/pull/2834
* fix: Removing a favorite overwrites live message state with stale snapshot by @Allaoua9 in https://github.com/Chainlit/chainlit/pull/2837
* fix: Enter key sends message when slash input matches no registered command by @nzjrs in https://github.com/Chainlit/chainlit/pull/2867
* Fix/settings edit hook issues by @Allaoua9 in https://github.com/Chainlit/chainlit/pull/2860
* fix: widget disable option is not supported on Multiselect, Tags, Datepicker and RadioButton by @Allaoua9 in https://github.com/Chainlit/chainlit/pull/2846
* feat: make AzureAD OAuth scopes configurable via env vars by @Br1an67 in https://github.com/Chainlit/chainlit/pull/2811
* fix: make send_toast an async function by @Br1an67 in https://github.com/Chainlit/chainlit/pull/2809
* Added ability to display a Lucid icon in the Step, instead of the default avatar by @Allaoua9 in https://github.com/Chainlit/chainlit/pull/2561
* fix: harden MCP exit stack cleanup to prevent cross-task cancel-scope errors by @GhimBoon in https://github.com/Chainlit/chainlit/pull/2805
* fix: treat empty custom_fonts array as intent to remove default fonts by @Br1an67 in https://github.com/Chainlit/chainlit/pull/2808
* feat: respect explicit figure height in Plotly elements by @nzjrs in https://github.com/Chainlit/chainlit/pull/2861
* fix: show error toast when streamable-http MCP connection fails by @MaxwellCalkin in https://github.com/Chainlit/chainlit/pull/2831
* feat: added improved pdf viewer by @JonasKenke in https://github.com/Chainlit/chainlit/pull/2833
* fix: handle Slack workflow/bot messages in app_mention events by @sefadegirmenci in https://github.com/Chainlit/chainlit/pull/2844
* feat(i18n): add Portuguese (pt-PT) translation by @scafer in https://github.com/Chainlit/chainlit/pull/2840
* feat: make stop icon and loading cursor customizable via CSS variables by @nzjrs in https://github.com/Chainlit/chainlit/pull/2866
* fix: clear attachments when switching chat profiles by @Chukwuebuka-2003 in https://github.com/Chainlit/chainlit/pull/2858
* feat: Add copilot sidebar mode with drag-to-resize by @EyalAmitay in https://github.com/Chainlit/chainlit/pull/2785
* chore(ai): sync agent/editor settings and Context7 library IDs by @asvishnyakov in https://github.com/Chainlit/chainlit/pull/2874
* docs(ai): upload research & AI docs updates by @asvishnyakov in https://github.com/Chainlit/chainlit/pull/2875
* chore(frontend): declare pdfjs-dist as explicit frontend dependency by @asvishnyakov in https://github.com/Chainlit/chainlit/pull/2876
* test(cypress): stabilize, lint & format all tests to prepare for #2573 by @asvishnyakov in https://github.com/Chainlit/chainlit/pull/2877
* feat(elements): add polars support for dataframe elements by @tristan-ranff in https://github.com/Chainlit/chainlit/pull/2879
* Fix sort thread list categories by date by @smilaid in https://github.com/Chainlit/chainlit/pull/2872
* chore: upgrade eslint to v10 by @asvishnyakov in https://github.com/Chainlit/chainlit/pull/2880
* chore: bump Dependencies by @hayescode in https://github.com/Chainlit/chainlit/pull/2881
* chore: release by @hayescode in https://github.com/Chainlit/chainlit/pull/2883

## New Contributors
* @nzjrs made their first contribution in https://github.com/Chainlit/chainlit/pull/2867
* @MaxwellCalkin made their first contribution in https://github.com/Chainlit/chainlit/pull/2831
* @JonasKenke made their first contribution in https://github.com/Chainlit/chainlit/pull/2833
* @scafer made their first contribution in https://github.com/Chainlit/chainlit/pull/2840
* @Chukwuebuka-2003 made their first contribution in https://github.com/Chainlit/chainlit/pull/2858
* @tristan-ranff made their first contribution in https://github.com/Chainlit/chainlit/pull/2879
* @smilaid made their first contribution in https://github.com/Chainlit/chainlit/pull/2872

**Full Changelog**: https://github.com/Chainlit/chainlit/compare/2.10.1...2.11.0