AL Language extension enters a perpetual loading/spinning state when opening a multi-root

[louagej]

1. Describe the bug
The AL Language extension enters a perpetual loading/spinning state when opening a multi-root .code-workspace that spans two repositories: a documentation-only repository (opened as ".") and an AL source repository (opened as a sibling path). The extension never completes initialization — IntelliSense, diagnostics, and CodeLens are unavailable.

2. To Reproduce

Steps to reproduce the behavior:

1. Check out both repositories side-by-side:

   <customer>-docs/          ← documentation repo (MkDocs, no app.json)
   <customer>/               ← AL source repo
   

2. Open the workspace file located in the documentation repo:

   {
     "folders": [
       { "path": "." },
       { "path": "../<customer>" }
     ],
     "settings": {
       "al.enableCodeAnalysis": true,
       "al.codeAnalyzers": ["${CodeCop}", "${UICop}", "${PerTenantExtensionCop}"],
       "al.ruleSetPath": "ruleset.json"
     }
   }

   • "." → Documentation repository — no app.json at root (MkDocs site, markdown only)
   • "../<customer>" → AL source repository — contains 3 AL projects nested under subfolders:

   Subfolder	App ID	platform / application	AL files
   W1/<customer>.w1	2bb1a09a-…	26.0.0.0 / 26.0.0.0	~31
   BE/<customer>.be	3fe87366-…	26.0.0.0 / 26.0.0.0	~5
   W1/<customer>.w1.Test	8b7b806d-…	depends on W1 + MS test libs	~1

3. Observe the AL Language extension status bar item.

4. Wait — the spinner never stops and the extension never becomes ready.

3. Expected behavior
The AL Language extension completes loading for all 3 AL projects found in the "../<customer>" folder and provides IntelliSense, diagnostics, and CodeLens normally.

4. Actual behavior
The AL Language extension status bar item shows a perpetual loading/spinning indicator. [Attach screenshot or AL output channel log here.]

5. Versions:

• AL Language: 17.0.2273547
• Visual Studio Code: 1.127.0 (x64)
• Business Central Version: 28.1
• List of Visual Studio Code extensions installed:
  • ms-dynamics-smb.al@17.0.2273547
• Operating System:
  • Windows
  • Linux
  • MacOS

Final Checklist

• Search the issue repository to ensure you are reporting a new issue
• Reproduce the issue after disabling all extensions except the AL Language extension
• Simplify your code around the issue to better isolate the problem