refactor(vscode): extract KiloProvider action helpers

[marius-kilocode]

Summary

• Extract KiloProvider's VS Code action handlers into a focused helper module so the provider switch stays smaller.
• Preserve existing action behavior through explicit helper parameters and add small normalizer coverage.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (4 files)

• packages/kilo-vscode/src/KiloProvider.ts
• packages/kilo-vscode/src/kilo-provider/vscode-actions.ts
• packages/kilo-vscode/src/kilo-provider/vscode-actions-utils.ts
• packages/kilo-vscode/tests/unit/vscode-actions-utils.test.ts

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_{Reviewed by gpt-5.5-2026-04-23 · 287,606 tokens}