docs: update changelog for 1.68.0

Author: jfaltermeier

CHANGELOG.md

@@ -4,9 +4,76 @@
 
 - [Previous Changelogs](https://github.com/eclipse-theia/theia/tree/master/doc/changelogs/)
 
-## 1.68.0 - TBD
-
-- [monaco] ensured that Monaco editors are connected to their models iff they are visible  [#16832](https://github.com/eclipse-theia/theia/pull/16832)
+## 1.68.0 - 1/29/2026
+
+- [ai-chat] added mode selection for coder and architect agents [#16860](https://github.com/eclipse-theia/theia/pull/16860)
+- [ai-chat] fix: do not break chat when interrupting tool calls [#16806](https://github.com/eclipse-theia/theia/pull/16806)
+- [ai-chat] fixed refresh bug after manual task context change [#16816](https://github.com/eclipse-theia/theia/pull/16816)
+- [ai-chat] fixed respect for agentId in delegateToAgent when prompt contains @mentions [#16855](https://github.com/eclipse-theia/theia/pull/16855)
+- [ai-chat] fixed the failing test [#16897](https://github.com/eclipse-theia/theia/pull/16897)
+- [ai-chat] implemented preference for AI chat persisted session limit [#16776](https://github.com/eclipse-theia/theia/pull/16776)
+- [ai-chat] serialized and restored parsedChatRequest in chat sessions [#16736](https://github.com/eclipse-theia/theia/pull/16736)
+- [ai-chat] stored persistent chat sessions in the workspace by default [#16847](https://github.com/eclipse-theia/theia/pull/16847)
+- [ai-chat-ui] added toggle button to collapse changeset list [#16801](https://github.com/eclipse-theia/theia/pull/16801)
+- [ai-chat-ui] displayed prompt variant customization in chat view responses and agent config [#16749](https://github.com/eclipse-theia/theia/pull/16749)
+- [ai-chat-ui] enhanced chat accessibility (focus commands and ARIA) [#16835](https://github.com/eclipse-theia/theia/pull/16835)
+- [ai-chat-ui] highlighted referenced tools in users' chat messages [#16812](https://github.com/eclipse-theia/theia/pull/16812)
+- [ai-copilot] added GitHub Copilot language model integration [#16841](https://github.com/eclipse-theia/theia/pull/16841)
+- [ai-core] added agent skills support [#16810](https://github.com/eclipse-theia/theia/pull/16810)
+- [ai-core] updated default models [#16828](https://github.com/eclipse-theia/theia/pull/16828)
+- [ai-hugging-face] upgraded sdk to v4.x for new api endpoint [#16864](https://github.com/eclipse-theia/theia/pull/16864)
+- [ai-hugging-face] used patchLanguageModel to update model status [#16885](https://github.com/eclipse-theia/theia/pull/16885)
+- [ai-ide] added createSkill agent [#16903](https://github.com/eclipse-theia/theia/pull/16903)
+- [ai-ide] added Theia coder agent mode next prompt [#16799](https://github.com/eclipse-theia/theia/pull/16799)
+- [ai-ide] added todo tool function [#16859](https://github.com/eclipse-theia/theia/pull/16859)
+- [ai-ide] appTester improvements [#16898](https://github.com/eclipse-theia/theia/pull/16898)
+- [ai-ide] fixed misleading tool description for context_addFiles [#16778](https://github.com/eclipse-theia/theia/pull/16778)
+- [ai-ide] fixed model selection UI update for model alias [#16800](https://github.com/eclipse-theia/theia/pull/16800)
+- [ai-ide] fixed remote MCP server state and improved UX [#16822](https://github.com/eclipse-theia/theia/pull/16822)
+- [ai-ide] fixed selected item after model alias change [#16760](https://github.com/eclipse-theia/theia/pull/16760)
+- [ai-ide] improved architect planning mode - next prompt [#16843](https://github.com/eclipse-theia/theia/pull/16843)
+- [ai-ide] improved function descriptions [#16796](https://github.com/eclipse-theia/theia/pull/16796)
+- [ai-ide] improved task context variable description [#16817](https://github.com/eclipse-theia/theia/pull/16817)
+- [ai-ide] Reverted "Fixed #16795 (#16800)" [#16802](https://github.com/eclipse-theia/theia/pull/16802)
+- [ai-ide] switched writeFileReplacement to V2 replacer [#16815](https://github.com/eclipse-theia/theia/pull/16815)
+- [ai-mcp] blocked mcp server autostart in untrusted workspaces [#16891](https://github.com/eclipse-theia/theia/pull/16891)
+- [ai-mcp] updated MCP SDK to v1.25.1 and migrated to zod v4 [#16780](https://github.com/eclipse-theia/theia/pull/16780)
+- [core] added injectable LoggerSanitizer to mask sensitive data in logs [#16771](https://github.com/eclipse-theia/theia/pull/16771) - Contributed on behalf of STMicroelectronics
+- [core] fixed memory leaks from 'toDisposeOn' disposable collections [#16856](https://github.com/eclipse-theia/theia/pull/16856)
+- [core] improved keybinding lookup and prioritization [#16763](https://github.com/eclipse-theia/theia/pull/16763)
+- [core] postponed default override warning logging until builtin preferences registered [#16853](https://github.com/eclipse-theia/theia/pull/16853)
+- [core] refactored tree search box into react widget and enhanced ux and styling [#16761](https://github.com/eclipse-theia/theia/pull/16761)
+- [core] restored enhanced tab preview for all widgets [#16895](https://github.com/eclipse-theia/theia/pull/16895)
+- [core] theia v1.67.0 released [#16738](https://github.com/eclipse-theia/theia/pull/16738)
+- [core] translation update for version 1.68.0 [#16907](https://github.com/eclipse-theia/theia/pull/16907)
+- [debug] fixed deletion of disabled source breakpoints [#16794](https://github.com/eclipse-theia/theia/pull/16794)
+- [debug] improved debug console with output persistence and text filtering [#16882](https://github.com/eclipse-theia/theia/pull/16882)
+- [doc] updated publishing guide documentation [#16768](https://github.com/eclipse-theia/theia/pull/16768) - Contributed on behalf of STMicroelectronics
+- [examples] fixed clean script for the example applications [#16767](https://github.com/eclipse-theia/theia/pull/16767)
+- [github] added discussion auto-reply [#16746](https://github.com/eclipse-theia/theia/pull/16746)
+- [github] added sponsoring hint to discussion templates [#16745](https://github.com/eclipse-theia/theia/pull/16745)
+- [github] added sponsoring hint to gh ticket templates [#16744](https://github.com/eclipse-theia/theia/pull/16744)
+- [localization-manager] set deepl auth header [#16906](https://github.com/eclipse-theia/theia/pull/16906)
+- [messages] allowed copying messages from notifications and fixed copying of error messages in AI chat [#16830](https://github.com/eclipse-theia/theia/pull/16830) - Contributed on behalf of STMicroelectronics
+- [messages] handled notification timeout correctly when set to 0 [#16849](https://github.com/eclipse-theia/theia/pull/16849) - Contributed on behalf of STMicroelectronics
+- [monaco] updated built-in theme and color definitions [#16873](https://github.com/eclipse-theia/theia/pull/16873)
+- [output] fixed state restoration in outputWidget [#16851](https://github.com/eclipse-theia/theia/pull/16851)
+- [plugin] preserved lsp diagnostic.data in markers [#16766](https://github.com/eclipse-theia/theia/pull/16766)
+- [plugin] updated VS Code built-in extensions to 1.104.0 and Typescript to 5.9.3 [#16774](https://github.com/eclipse-theia/theia/pull/16774) - contributed on behalf of STMicroelectronics
+- [preferences] marked llmprovider as experimental [#16784](https://github.com/eclipse-theia/theia/pull/16784)
+- [preferences] supported preference tags in settings view [#16783](https://github.com/eclipse-theia/theia/pull/16783)
+- [scm] added action button (commit button) support to scm [#16803](https://github.com/eclipse-theia/theia/pull/16803) - contributed under the supervision of @JonasHelming as part of the TUM Bachelor Thesis project "Enhancing Terminal Usability in Modern IDEs through AI-Assisted Interaction"
+- [scm] fix manual resolution not detected in some cases [#16869](https://github.com/eclipse-theia/theia/pull/16869)
+- [scm] fixed `Go to Previous Unhandled Conflict` doing nothing [#16838](https://github.com/eclipse-theia/theia/pull/16838)
+- [scm] fixed `mark as handled` having no effect in some cases [#16858](https://github.com/eclipse-theia/theia/pull/16858)
+- [scm] ux: fixed styling for scm commit button for high contrast themes [#16905](https://github.com/eclipse-theia/theia/pull/16905)
+- [terminal-manager] improved handling of terminal manager preferences & element deletion [#16827](https://github.com/eclipse-theia/theia/pull/16827)
+- [terminal-manager] updated active page handling on terminal page deletion [#16807](https://github.com/eclipse-theia/theia/pull/16807)
+- [vscode] API evolution (public and proposed) and nls update to 1.108.0 [#16871](https://github.com/eclipse-theia/theia/pull/16871) - contributed on behalf of STMicroelectronics
+- [vsx-registry] fixed vsxExtensionsViewContainer onAfterAttach issue [#16862](https://github.com/eclipse-theia/theia/pull/16862)
+- [workspace] implemented workspace trust dialog and management [#16809](https://github.com/eclipse-theia/theia/pull/16809)
+- [workspace] improved computation of workspace trust for saved/multi-root workspaces [#16893](https://github.com/eclipse-theia/theia/pull/16893)
+- [workspace] updated dialog and status bar item styling and fixed command state handling [#16877](https://github.com/eclipse-theia/theia/pull/16877)
 
 <a name="breaking_changes_1.68.0">[Breaking Changes:](#breaking_changes_1.68.0)</a>
 
@@ -20,6 +87,9 @@
   - removed the `MergeEditorModel.findMergeRanges` method
   - renamed the `RangeUtils.isBeforeOrTouching` method to `isBefore`
 - [ai-chat, ai-core] refactored tool handler context types [#16899](https://github.com/eclipse-theia/theia/issues/16899): Tool handlers now receive `ToolInvocationContext` (with `cancellationToken`) instead of `MutableChatRequestModel`. Chat-bound tools should use `assertChatContext(ctx)` to access `ChatToolContext` with `request` and `response` properties.
+- [ai-chat] fixed: refactor tool handler context types for type safety [#16901](https://github.com/eclipse-theia/theia/pull/16901)
+- [ai-terminal] added shellExecutionTool for AI agents [#16878](https://github.com/eclipse-theia/theia/pull/16878)
+- [core] passed widget consistently to toolbar enablement handlers [#16826](https://github.com/eclipse-theia/theia/pull/16826)
 
 ## 1.67.0 - 12/10/2025