chore:release (#2826)

<!-- This is an auto-generated description by cubic. -->
## Summary by cubic
Release 2.10.0. Adds new UI controls, translations, and a /health
endpoint; fixes multiple UI/auth/data issues and updates
@chainlit/react-client to 0.4.0.

- **New Features**
- UI/UX: image preview, always-visible favorites with quick delete,
configurable avatar size, disable markdown in user messages, command
pre-selection, Step auto_collapse, hidden default sidebar state.
- Platform/Ops: starter categories, settings change listener,
configurable state cookie lifetime (env), Arabic and Danish
translations, /health endpoint.

- **Bug Fixes**
- Chat/UI: reorder history sidebar after messages, fix sidebar inset
overflow causing horizontal scroll, reset audio UI when mic permission
is denied.
- Data/Auth: use detailed login errors, convert UUIDs to strings in
feedback, preserve thread metadata on updates, prevent empty strings
from overwriting step content, correct URL scheme when SSL is enabled.

<sup>Written for commit 36af78e.
Summary will update on new commits.</sup>

<!-- End of auto-generated description by cubic. -->

Author: hayescode

CHANGELOG.md

@@ -4,6 +4,34 @@ All notable changes to Chainlit will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [2.10.0] - 2026-03-05
+
+### Added
+- Add starter categories for grouped starters
+- Always show the favorite messages button with an empty state
+- Add option to disable rendering markdown in user messages
+- Allow easy deletion of favorites
+- Make state cookie lifetime configurable via env var
+- Add Arabic translation
+- Add Danish translation
+- Add settings change listener
+- Add image preview
+- Add selected option for command pre-selection
+- Add `auto_collapse` parameter to `Step`
+- Add `/health` endpoint for container orchestration
+- Add `hidden` option for `default_sidebar_state`
+- Make avatar size configurable via `config.toml`
+
+### Fixed
+- Reorder chat history sidebar after messages in existing chats
+- Use login error detail for credential failures
+- Convert UUID fields to strings in feedback extraction
+- Preserve thread metadata when updated without metadata
+- Reset audio UI when microphone permission is denied
+- Fix sidebar inset overflow causing horizontal scroll
+- Prevent empty strings from overwriting step content on upsert
+- Use correct URL scheme when SSL is configured
+
 ## [2.9.6] - 2026-01-20
 
 ### Added

backend/chainlit/version.py

@@ -1 +1 @@
-__version__ = "2.9.6"
+__version__ = "2.10.0"

libs/react-client/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@chainlit/react-client",
   "description": "Websocket client to connect to your chainlit app.",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "scripts": {
     "build": "tsup src/index.ts --tsconfig tsconfig.build.json --clean --format esm,cjs --dts  --external react --external recoil --minify --sourcemap --treeshake",
     "dev": "tsup src/index.ts --clean --format esm,cjs --dts  --external react --external recoil --minify --sourcemap --treeshake",