Fix design-time services documentation for EF Core 6.0+

[Copilot]

Summary of Changes

This PR fixes outdated design-time services documentation for EF Core 6.0+ (issues #3390 and #4013).

Files Modified

1. samples/core/Miscellaneous/CommandLine/CustomTools.cs

• Added provider-specific design-time services registration (required for EF Core 6.0+)
• Added missing using System; for Activator class
• Changed from UseSqlServer to UseSqlite to match project dependencies
• Updated service registration order: DbContext services → provider services → core design-time services

2. entity-framework/core/cli/services.md

• Updated service list from 10 to 23+ services (added ICandidateNamingService, ICSharpMigrationOperationGenerator, ICompiledModelCodeGenerator, IPrecompiledQueryCodeGenerator, etc.)
• Updated PackageReference example from version 3.1.9 to 9.0.0
• Updated ms.date to 01/17/2025

3. entity-framework/core/performance/advanced-performance-topics.md

• Added new subsection "Handling compilation errors due to ambiguous type references"
• Documented how to override CSharpHelper.ShouldUseFullName to return true
• Added cross-reference link to design-time services documentation

4. entity-framework/core/miscellaneous/internals/tools.md

• Fixed grammar: "path" → "paths"

Fixes #4013
Fixes #3390

Original prompt

Fix @dotnet/EntityFramework.Docs/issues/3390 and @dotnet/EntityFramework.Docs/issues/4013 by updating the documentation for design services. Read all the comments to make sure you have enough context. Also, examine the implementation of @dotnet/efcore/files/src/EFCore.Design/Design/Internal/DesignTimeServicesBuilder.cs

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[AndriySvyryd]

@copilot Add a note to the compiled model docs that CSharpHelper.ShouldUseFullName can be overridden to return true to avoid compilation errors due to ambiguous references. And link to core/cli/services on how to do it

[Copilot]

@copilot Add a note to the compiled model docs that CSharpHelper.ShouldUseFullName can be overridden to return true to avoid compilation errors due to ambiguous references. And link to `core/cli/s...

Added documentation in commit ab5b232:

1. In compiled models documentation (advanced-performance-topics.md): Added a new section "Handling compilation errors due to ambiguous type references" that explains the issue and links to the design-time services documentation.

2. In design-time services documentation (services.md): Added a "Customizing individual services" section with a complete example showing how to override CSharpHelper.ShouldUseFullName to return true to always use fully-qualified type names.

Both documents now cross-reference each other to provide users with the information they need to resolve ambiguous type reference compilation errors.

[AndriySvyryd]

@copilot Update progress by creating a summary of all changes in this PR

[Copilot]

@copilot Update progress by creating a summary of all changes in this PR

Summary of Changes

This PR fixes outdated design-time services documentation for EF Core 6.0+ (issues #3390 and #4013).

Files Modified (4 files, +50/-9 lines)

1. samples/core/Miscellaneous/CommandLine/CustomTools.cs

• Added provider-specific design-time services registration (required for EF Core 6.0+)
• Added missing using System; for Activator class
• Changed from UseSqlServer to UseSqlite to match project dependencies
• Updated service registration order: DbContext services → provider services → core design-time services

2. entity-framework/core/cli/services.md

• Updated service list from 10 to 23+ services (added ICandidateNamingService, ICSharpMigrationOperationGenerator, ICompiledModelCodeGenerator, IPrecompiledQueryCodeGenerator, etc.)
• Updated PackageReference example from version 3.1.9 to 9.0.0
• Updated ms.date to 01/17/2025

3. entity-framework/core/performance/advanced-performance-topics.md

• Added new subsection "Handling compilation errors due to ambiguous type references"
• Documented how to override CSharpHelper.ShouldUseFullName to return true
• Added cross-reference link to design-time services documentation

4. entity-framework/core/miscellaneous/internals/tools.md

• Fixed grammar: "path" → "paths"

Key Fixes

• Issue Design-time services documentation out of date #4013: Fixed broken CustomTools.cs sample that returned null for IMigrationsScaffolder in .NET 6.0+
• Issue Update Design-time services #3390: Updated design-time services list to match current EF Core implementation
• All samples verified to compile successfully