chore: remove unused ContinueCompletionProvider and NextEdit code

[markijbema]

Summary

Removes the unused ContinueCompletionProvider class and all code exclusively used by it, which is not needed by our active GhostInlineCompletionProvider.

If we want to use some of this code later we can always copy paste it, but from our previous work we've concluded that cherry-picking part by part is easier than wholesale integration

Context for doing that now is that I want to start integrating the continue code into our own code more

[changeset-bot]

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Latest commit: dc6d476

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[kiloconnect]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Overview

This PR removes unused ContinueCompletionProvider and all NextEdit-related code that is not needed by the active GhostInlineCompletionProvider. The changes are straightforward deletions of unused code.

Key Changes:

• Removed IAutocompleteNextEditLLM interface from index.d.ts
• Removed nextEdit capability from ModelCapability interface
• Removed RangeInFileWithNextEditInfo interface
• Updated MinimalConfig.ts comments to reflect removal of NextEdit references
• Deleted entire nextEdit/ directory with all providers, templating, and context code
• Deleted vscode-test-harness/ files related to completion provider, window manager, and selection change handling
• Deleted autodetect.ts and its tests for NextEdit model detection

The deletions are clean and the remaining code in MinimalConfig.ts and index.d.ts is consistent with the removal of NextEdit functionality.

Files Reviewed (57 files)

• src/services/continuedev/core/autocomplete/MinimalConfig.ts - Comment updates only
• src/services/continuedev/core/index.d.ts - Interface removals
• src/services/continuedev/core/llm/autodetect.test.ts - Deleted
• src/services/continuedev/core/llm/autodetect.ts - Deleted
• src/services/continuedev/core/nextEdit/ - Entire directory deleted (40+ files)
• src/services/continuedev/core/vscode-test-harness/ - Multiple files deleted

[EamonNerbonne]

🥳

Woot!