• [ai] declared agent-specific variable in claudeCode agent and improved agent specific variable status UX #16967
• [ai-anthropic] added support for custom anthropic models #16673
• [ai-anthropic] updated max tokens for opus 4.6 #17051
• [ai-anthropic, ai-core, ai-google, ai-openai] updated models #17040
• [ai-chat] added mode selector to ask AI input without session overhead or code duplication #16914 - contributed on behalf of EclipseSource
• [ai-chat] added showInChat property to control agent visibility in chat #16925
• [ai-chat] do not open editor on apply change #16986
• [ai-chat] fixed cannot configure tool confirmation mode if default is configured in package.json preferences #17068 - Contributed on behalf of Lonti.com Pty Ltd.
• [ai-chat] fixed: clear image context from chat input after sending #16863
• [ai-chat] improved usability of image file picker #17018
• [ai-chat] small ui improvements #16952
• [ai-chat-ui] added back/forward navigation between chats in the AI Chat View #16894
• [ai-chat-ui] added generic capabilities selection UI for chat requests #17041
• [ai-chat-ui] displayed images in chat request tree nodes #17024
• [ai-chat-ui] improved image variable semantics and behavior #16902 - contributed on behalf of STMicroelectronics
• [ai-chat-ui] improved tool call hover behavior and argument rendering #16990
• [ai-chat-ui] improved tool call parameters rendering #16844
• [ai-chat-ui] used bindRootContributionProvider for GenericCapabilitiesContribution #17070
• [ai-claude-code] implemented session-based tool approval for claude code #16961
• [ai-claude-code] supported for the AskUserQuestion functionality #16981
• [ai-copilot] ux improvements for GitHub copilot integration #17059
• [ai-core] added ./prompts/skills default to preference description #17008
• [ai-core] added capability variable for conditional prompt fragments #16985
• [ai-core] improved AI agent completion notifications #17029 - contributed on behalf of STMicroelectronics
• [ai-core] improved how to enable thinking mode #17023
• [ai-core] made opus 4.6 default in model aliases #17066
• [ai-core] passed toolCallId across RPC and normalized empty tool arguments #16908
• [ai-core] sorted the list by agent name and removed disabled agents #16997
• [ai-core] supported name and description for prompt fragments via frontmatter #17048
• [ai-core] watched parent directory for skills folder creation #16927
• [ai-history] showed prompt variant ID and edit state in history #16876
• [ai-ide] added cards for recent chat sessions to the Welcome screen #16894
• [ai-ide] added MCP server CRUD dialogs and slash commands to skills widget #16991
• [ai-ide] allowed Theia Coder Agent Mode to launch Apps #17012
• [ai-ide] consolidated coder prompts #17004
• [ai-ide] enhanced and refined capabilities #17049
• [ai-ide] fixed fileDiagnosticProvider to not open an editor #17014
• [ai-ide] fixed small improvements in AI agent config view #16974
• [ai-ide] fixed unread badge clearing all sessions when any chat is opened #17045
• [ai-ide] improved AI Chat welcome screen styling and UX #17039
• [ai-ide] made chrome dev App Tester default #17042
• [ai-ide] made new plan mode default #17005
• [ai-ide] Removed confusing escaping comment from function #17006
• [ai-ide] removed usage statistics from devtools mcp #16943
• [ai-ide] sorted agents alphabetically #16979
• [ai-ide] sorted alphabetically the MCP servers, variables, tools, and prompts lists #16983
• [ai-mcp] added roots support for mcp servers #16911
• [ai-ollama] yielded toolCallResponsePart before calling the tool handler #16976
• [ai-terminal] added shell command permission UI for AI terminal tool confirmation #17054
• [ai-terminal] added shell command whitelist for auto-approval #16931
• [ai-terminal] made shell command parser quote-aware #17022
• [api-samples] improved clarity of sample contributions #16937
• [ci] published next version on weekdays instead of only Mondays #16989
• [core] added a simple Card React component #16894
• [core] added locale and no-translate attributes to html element on startup #16966
• [core] changed 'no reply handler' from throw to console.warn #16850 - contributed on behalf of es6kr
• [core] fixed issue of preserving multiple consecutive spaces in theia ui elements #16935
• [core] fixed validation error messages in vscode.window.showInputBox and vscode.window.createInputBox #17001
• [core] fixed whitespace collapsing in explorer file/folder names #16932
• [core] improved containerBasedContributionProvider memory cleanup #17021
• [core] only set window.titleBarStyle preference if different from active value #16425
• [core] updated the dragdrop and widgets packages to the latest #16970
• [debug] prevented task execution and debug session creation without workspace trust #16917
• [debug] updated debug frame decoration logic #16995
• [dev-packages] merged the changes from the release branch to master #16910
• [editor] added formatter status bar with smart configuration management #16829
• [localization-manager] supported string concatenation and template literals in nls extraction and improved translation quality #17035
• [monaco] Called handleVisibilityChanged for embedded diff editor #17009
• [monaco] fixed search-in-workspace replace all failure for unopened files #16945
• [monaco] set model for embedded diff editors immediately #16940
• [plugin] fixed hostedPluginReader loads browser plugins relying on implicit .js resolution #16886
• [plugin-ext] fixed authentication session event chain #16915
• [plugin-ext] supported custom editors in the recently opened files list in files search quick pick #16999
• [preferences] scroll to focused item when search cleared #16992
• [prompts] mentioned npm and tasks in project info #16973
• [scm] improved merge conflict revealing #16950
• [scm] improved scroll state preservation #16960
• [scm] improved scroll sync implementation in merge editor #16947
• [scm] improved UX for merge conflict actions in special cases #16980
• [terminal] added optional trimRight parameter to TerminalBuffer.getLines to strip trailing whitespace used for terminal grid alignment #16975
• [terminal] synchronized onOutput with buffer updates using onWriteParsed #16934
• [ui] fixed debug console filter spellcheck and workspace trust dialog styles #17015
• [vscode] api evolution (public) and nls update to 1.109.4 #17047
• [vsx-registry] filtered versions for target platform in Extensions view #17027
• [workspace] ensured UNC paths are normalized correctly on Windows #16712
• [workspace] fixed minor css issues in workspace trust dialog and quick input list #17063
• [workspace] prevented restart dialog on startup for empty windows #16924
• [workspace] removed the seeding of workspace chat history from global history #16933

Breaking Changes:

• [debug] reduced calls to provide dynamic debug configs #16916
• [terminal] fix TerminalBuffer.getLines to iterate in natural order instead of reversed order #16975
• [terminal] fix TerminalBuffer.getLines to use the start parameter instead of replacing it with 0 #16975