Fix prompt and skills discovery at workspace root level

[Arexoor]

Fixes #245

This PR fixes the issue where prompts and skills files located at the workspace root directory (e.g., eclipse-workspace/.github) were not being discovered and loaded by the Copilot plugin with an SAP ADT projects.

Root Cause

The WorkspaceUtils.listWorkspaceFolders() method only returned top-level Eclipse projects in the workspace, but never included the workspace root directory itself. This meant that:

• Prompt files (.prompt.md) and skill files (SKILL.md) placed at the workspace root level under .github/ were never discovered
• The language server had no way to search the workspace root for these files
• In SAP ADT environments, this was particularly problematic as projects are not structured as standard Eclipse projects

Solution

Modified WorkspaceUtils.listWorkspaceFolders() to:

• Include workspace root as the first workspace folder in the list
• Add deduplication logic to prevent duplicate URIs when a project is located at the workspace root
• Gracefully handle errors when accessing the workspace root URI

Changes Made:

com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/utils/WorkspaceUtils.java

• Modified listWorkspaceFolders() to include workspace root URI with name "workspace-root"
• Added a Set for tracking seen URIs to prevent duplicates
• Added error handling for edge cases when retrieving workspace root

com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/chat/services/ChatCompletionService.java

• Added debug logging to show which workspace folders are being used for prompt and skill discovery
• Logs the name and URI of each workspace folder being searched

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[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

This PR updates workspace folder discovery for chat completion template initialization by using a shared utility, adding workspace-root inclusion, and logging discovered folders to help debug prompt/skill discovery.

Changes:

• Replace LSPEclipseUtils.getWorkspaceFolders() with WorkspaceUtils.listWorkspaceFolders()
• Add info-level logging of discovered workspace folders during template initialization
• Enhance workspace folder listing to include the workspace root and de-duplicate folder URIs

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/chat/services/ChatCompletionService.java	Switches folder discovery to WorkspaceUtils and logs discovered folders before requesting templates.
com.microsoft.copilot.eclipse.core/src/com/microsoft/copilot/eclipse/core/utils/WorkspaceUtils.java	Adds workspace-root to workspace folders and de-duplicates by URI.

[iloveeclipse]

See also #143 for a more systematic problem we have. probably your fix need to be alighned with that?