[ENHANCEMENT] Image support for VS Code LM API (may require API update)

[hannesrudolph]

Type

Enhancement

Problem / Value

When Roo Code uses the VS Code LM API provider, users can’t paste or drag/drop images into the chat. VS Code recently added image support in its LM/Chat APIs, so Roo should allow image attachments in this mode to keep behavior consistent and enable multimodal workflows (e.g., screenshots, diagrams).

Context

Affects users who select an LM API-backed model in Roo Code; image input works with some other providers today but not via the VS Code LM API path.

Proposal

Add image attachment support when using the VS Code LM API provider. If needed, update Roo’s VS Code LM API dependency/engine version to the release that includes image support.

Notes

Support may depend on the selected model/provider’s capabilities; if not available, show a helpful message instead of allowing attachments.

[roomote]

I'm exploring a potential fix for adding image support to the VS Code LM API provider and will open a PR to share progress.

[roomote]

Opened PR #8132 with my attempt at addressing this issue.

The PR prepares the codebase for image support in the VS Code Language Model API by:

• Updating VS Code engine requirement to 1.95.0+
• Adding TODO comments for future image capability detection
• Improving image placeholder messages

Note: This is a preparatory change as the VS Code API doesn't fully expose image capabilities through the LanguageModelChat interface yet. Full image support will be enabled once the API is updated.

PR link: #8132

Feedback welcome!