Theia AI G&A - AI-powered Theia IDE alpha - Release epic

[JonasHelming]

Mandatory topics pre-release

• [Theia AI] Coder switched to attempt tool calls in text like this "Tool Call:" #14905 (Fix tool calling string in messages #14906)
• Feature - Chat Agent Pinning #14716
• All Theia AI strings should be translatable #14825 (localize Theia AI strings #14857, Allow to change the ChatViewWidget title in products #14687)
• [Theia AI] Support DeepSeek reasoner (and future models with special "system" prompt requirements #14867 (Refine system message settings #14877)
• [theia AI] Rename Workspace agent to architect #14962 (Rename workspace agent to architect #14963)
• Move AI configuration view into ide package #14921 (introduce ai-ide package and move AI Configuration view #14948)
• Messaging and labeling alpha vs. experimental vs. G&A in code #14967 (Label AI as alpha #14968)
• Chat Input is unusable #14924
• Remove AIEditorManager #14873 (Remove AIEditorManager #14912)
• [Theia AI] Can't close chats #14989
• [Theia AI] Changesets cannot be closed #14993
• Add Context Support to Chat Requests #14839 (feat(ai): Enable Context Variables for Chat Requests #14787, [Theia AI] Integrate context feature with Coder #14895)
• [Theia AI] Coder and ChangeSet Epic #14768 ([Theia AI] Diff editor does not update to new changes #14900, Improve AI diff UX #14910, Use DiffEditor DiffNavigator to navigate diffs #14889, Update editors when ChangeElement added or replaced #14901, [Theia AI] Run ScanOSS on changeset #14915)
• [Theia AI] Optimize / resolve file context variable for Universal and Workspace #14945

Very nice to have

• [Theia AI] Support anyOf in function parameters #15011
• Listener memory leak in AI system #14902 (Implement asynch iterator for Open AI stream #14920 )
• Let MCP Servers autostart by default #14951
• [Theia AI] Allow multiple replacements in Coder function #14933 (Allow multiple replacements in Coder function #14934)
• Error: There are no document for untitled:/Untitled-1aichatviewlanguage #14842
• [Theia AI] Persistence for chats
• [Theia AI] Add function to validate a file #14973
• [Theia AI] Make universal default prompt plain #15006
• Prompt LLMs to produce links for files, so you can click them.
• [Theia AI] Support prompt fragments #14899
• Re-Investigate how function calls should remain in the message history
• Git Agent
• Allow to add all MCP functions to a prompt without listing them explicitly #14952
• Rearchitecture Monaco integration for Inline editors, should resolve the workaround added with Chat Input is unusable #14924, Error: There are no document for untitled:/Untitled-1aichatviewlanguage #14842 and the vim extension (and other extensions) conflict
• Chat view conflicts with vim extension in Theia IDE
• [Theia AI] Edit user messages
• Allow to create new thread and follow-up thread in Coder chat
• [Theia AI] Repeat last user requests
• Handle agents that do not resolve the context in a user friendly way
• [Theia AI] Support multi root workspaces in workspace functions, changeset functions and context
• Code output from o3-mini language model is not formatted #14846
• Generalize or move ChangeSetVariableContribution and ContextSummaryVariableContribution #15001
• Make Orchestrator more usable | It could mention pinning and shorten requests for classification

Nice to have

• Agent settings do not validate in preferences
• [Theia AI] Show the used context in the AI chat response #14961
• AI scroll-lock suggestions #14362
• [Theia AI] Tool Calling with OpenAI API Bug/Improvement: Ensure each function has a clear schema #14663
• Allow Coder to search workspace
• Support Gemini API
• [Theia AI] Show the used context in the AI chat response #14961
• Support AI variable dependencies explicitly #15000