fix: upgrade ALCops.Analyzers to v0.8.6 and improve AD0001 handling (#11)

Resolves #10 — LinterCop analyzer crashed with MissingMethodException
when the AL Language extension provides newer BC DevTools than what
ALCops.Analyzers v0.5.0 was compiled against. The reflection-based
wrapper for QuoteIdentifierIfNeeded was introduced in v0.6.0+.

- Bump ALCops.Analyzers from 0.5.0 to 0.8.6
- Log AD0001 (analyzer crash) diagnostics to stderr for debugging
  while still including them in results
- Log BC DevTools version at startup for easier triage
- Add Dependabot config scoped to ALCops.Analyzers

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: Arthurvdv

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+  - package-ecosystem: nuget
+    directory: /src/ALCops.Mcp
+    schedule:
+      interval: weekly
+    allow:
+      - dependency-name: ALCops.Analyzers

src/ALCops.Mcp/ALCops.Mcp.csproj

@@ -26,7 +26,7 @@
         <PackageReference Include="ModelContextProtocol" Version="0.9.0-preview.2" />
         <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.0" />
         <PackageReference Include="System.Composition.AttributedModel" Version="8.0.0" />
-        <PackageReference Include="ALCops.Analyzers" Version="0.5.0" PrivateAssets="none" />
+        <PackageReference Include="ALCops.Analyzers" Version="0.8.6" PrivateAssets="none" />
     </ItemGroup>
 
     <!-- BC Dev Tools — needed at compile time, excluded from package by ExcludeBcDevToolsFromPublish.

src/ALCops.Mcp/Services/BcDevToolsBootstrap.cs

@@ -21,6 +21,13 @@ internal static class BcDevToolsBootstrap
         {
             RegisterAssemblyResolver(path);
             Console.Error.WriteLine($"BC DevTools: {path}");
+            try
+            {
+                var version = System.Diagnostics.FileVersionInfo
+                    .GetVersionInfo(Path.Combine(path, MarkerDll));
+                Console.Error.WriteLine($"BC DevTools version: {version.FileVersion}");
+            }
+            catch { /* non-critical */ }
         }
         else
         {

src/ALCops.Mcp/Services/DiagnosticsRunner.cs

@@ -62,6 +62,9 @@ public async Task<IReadOnlyList<DiagnosticResult>> RunAsync(
             if (diagnostic.IsSuppressed)
                 continue;
 
+            if (diagnostic.Id == "AD0001")
+                Console.Error.WriteLine($"Analyzer exception: {diagnostic.GetMessage()}");
+
             // Ruleset filter: suppress diagnostics set to None, override severity for others
             var effectiveSeverity = diagnostic.Severity;
             if (provider is AnalyzerSet analyzerSet && analyzerSet.RuleActions is { } ruleActions)