debt - remove old inline chat world

[jrieken]

fixes #282015

[Copilot]

Pull request overview

This PR removes the deprecated "v1" implementation of inline chat, consolidating to a single "v2" implementation. The changes include:

• Deletion of old test files, utilities, strategies, and session management code
• Renaming InlineChatController2 → InlineChatController and AbstractInline2ChatAction → AbstractInlineChatAction
• Simplification of session service API (removing methods like createSession, moveSession, stashSession)
• Removal of v1-specific actions and UI components
• Updates to imports and references throughout the codebase

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
terminalChatActions.ts	Updated import from AbstractInline1ChatAction to AbstractInlineChatAction
inlineChatStrategies.test.ts	Deleted - old v1 test file
inlineChatSession.test.ts	Deleted - old v1 test file
inlineChatController.test.ts	Deleted - old v1 test file
inlineChatActions.ts	Removed import from deprecated class name, renamed v2 to main class
utils.ts	Deleted - old v1 utility code
inlineChatWidget.ts	Removed accessible diff viewer code for v1
inlineChatStrategies.ts	Deleted - old v1 strategy implementation
inlineChatSessionServiceImpl.ts	Simplified to remove v1 session management
inlineChatSessionService.ts	Removed v1 API methods, renamed v2 methods
inlineChatSession.ts	Deleted - old v1 session classes
inlineChatNotebook.ts	Removed v1 session key computer registration
inlineChatController.ts	Consolidated controllers, removed v1 implementation
inlineChatActions.ts	Removed v1 actions, renamed v2 classes
inlineChatAccessibleView.ts	Deleted - old v1 accessible view
inlineChat.contribution.ts	Updated registrations to single controller
emptyTextEditorHint.ts	Updated to use new session API
chatService.ts	Removed unused properties from location data
chatEditingEditorContextKeys.ts	Updated to use renamed session method
chatExecuteActions.ts	Removed delegate to edit session action