Add auto model policy support

[jdneo]

fix #305

[Copilot]

Pull request overview

Adds support for “Auto” model GA by switching client logic to rely on the stable Auto model ID (auto) and by wiring a new policy-driven refresh path so the model inventory updates when the Auto model is enabled/disabled by org policy.

Changes:

• Update Auto-model detection to use the stable model ID (id == "auto") instead of the display name.
• Introduce autoModel.enabled policy plumbing (policy params → feature flag → event) and refresh model inventory on policy changes.
• Improve model selection fallback behavior and add/expand tests covering Auto model policy behavior and event publishing.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/utils/ModelUtils.java	Switch Auto model detection to stable ID-based logic.
com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/chat/services/ModelService.java	Refresh models on Auto-model policy event; adjust default/fallback handling and selection persistence.
com.microsoft.copilot.eclipse.ui.test/src/com/microsoft/copilot/eclipse/ui/utils/ModelUtilsTests.java	Update/add tests to validate Auto handling is ID-based (not display-name based).
com.microsoft.copilot.eclipse.ui.test/src/com/microsoft/copilot/eclipse/ui/chat/services/ModelServiceTests.java	Add UI-level tests for policy-driven model inventory refresh and deterministic fallback selection.
com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/protocol/policy/DidChangePolicyParams.java	Add autoModel.enabled policy field + equality/hash/toString updates.
com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/lsp/CopilotLanguageClient.java	Publish Auto model policy change event when the policy value changes.
com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/FeatureFlags.java	Add autoModelPolicyEnabled feature flag storage.
com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/events/CopilotEventConstants.java	Add new event topic constant for Auto model policy changes.
com.microsoft.copilot.eclipse.core.test/src/com/microsoft/copilot/eclipse/core/lsp/CopilotLanguageClientTests.java	Add test to ensure Auto-model policy event is published only on value changes.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.