📄 CodeRabbit inference engine (CLAUDE.md)

**/*.cs: Use internal accessibility on types by default
Use sealed for classes unless inheritance is a valid use-case
Dispose IDisposable/IAsyncDisposable instances
Do not use .GetAwaiter().GetResult(), .Result(), .Wait(), or other blocking APIs on Task
Do not use the Async suffix for async methods
Write efficient code; avoid unnecessary allocations (e.g., avoid repeated ToString calls; consider for-loops over LINQ when appropriate)
Do not invoke the same async operation multiple times in the same code path unless necessary
Avoid awaiting async operations inside tight loops; prefer batching with a sensible upper bound on parallelism
Use CSharpier for formatting (required before commits; formatting also runs on build via CSharpier.MSBuild)

Files:

• src/Altinn.App.Core/Internal/Data/InstanceDataUnitOfWork.cs
• src/Altinn.App.Core/Models/DataElementChanges.cs

📄 CodeRabbit inference engine (CLAUDE.md)

Use Nullable Reference Types

Files:

• src/Altinn.App.Core/Internal/Data/InstanceDataUnitOfWork.cs
• src/Altinn.App.Core/Models/DataElementChanges.cs

📄 CodeRabbit inference engine (CLAUDE.md)

src/{Altinn.App.Api,Altinn.App.Core}/**/*.cs: Types meant to be implemented by apps should be marked with the ImplementableByApps attribute
For HTTP APIs, define DTOs with ...Request and ...Response naming

Files:

• src/Altinn.App.Core/Internal/Data/InstanceDataUnitOfWork.cs
• src/Altinn.App.Core/Models/DataElementChanges.cs

Learnt from: ivarne
PR: Altinn/app-lib-dotnet#1470
File: src/Altinn.App.Core/Internal/Data/InstanceDataUnitOfWork.cs:411-418
Timestamp: 2025-09-18T07:40:01.660Z
Learning: In InstanceDataUnitOfWork.UpdateDataElement, the _binaryCache is intentionally NOT updated after successful UpdateBinaryData calls. This preserves the ability to repeatedly detect which elements were changed during a session, even after they've been saved to storage. The "dirty" detection is by design for audit/tracking purposes.

Applied to files:

• src/Altinn.App.Core/Internal/Data/InstanceDataUnitOfWork.cs

📄 CodeRabbit inference engine (CLAUDE.md)

**/*.cs: Use CSharpier for code formatting (required before commits). Formatting happens automatically when building due to CSharpier.MSBuild
Use internal accessibility on types by default
Use sealed for classes unless inheritance is considered a valid use-case
Use Nullable Reference Types in C#
Remember to dispose IDisposable/IAsyncDisposable instances
For HTTP APIs, define ...Request and ...Response DTOs (e.g., LookupPersonRequest.cs and corresponding response)
Types meant to be implemented by apps should be marked with the ImplementableByApps attribute
Don't use .GetAwaiter().GetResult(), .Result(), .Wait() or other blocking APIs on Task
Don't use Async suffix for async methods
Write efficient code: Don't allocate unnecessarily (e.g., avoid calling ToString twice in a row, store in a variable; sometimes a for loop is better than LINQ)
Don't invoke the same async operation multiple times in the same codepath unless necessary
Don't await async operations in a loop (prefer batching, but maintain an upper bound on parallelism that makes sense)
Use strongly-typed configuration classes instead of untyped configuration
Register services in DI container properly following existing patterns

Files:

• src/Altinn.App.Core/Models/DataElementChanges.cs

[error] 108-108: CSharpier formatting check failed. File is not formatted as expected around line 108. Run 'dotnet csharpier check .' or 'dotnet csformatter' to fix formatting.

📄 CodeRabbit inference engine (CLAUDE.md)

**/*.cs: Use CSharpier for code formatting (required before commits). Formatting happens automatically when building due to CSharpier.MSBuild
Use internal accessibility on types by default
Use sealed for classes unless inheritance is considered a valid use-case
Use Nullable Reference Types in C#
Remember to dispose IDisposable/IAsyncDisposable instances
For HTTP APIs, define ...Request and ...Response DTOs (e.g., LookupPersonRequest.cs and corresponding response)
Types meant to be implemented by apps should be marked with the ImplementableByApps attribute
Don't use .GetAwaiter().GetResult(), .Result(), .Wait() or other blocking APIs on Task
Don't use Async suffix for async methods
Write efficient code: Don't allocate unnecessarily (e.g., avoid calling ToString twice in a row, store in a variable; sometimes a for loop is better than LINQ)
Don't invoke the same async operation multiple times in the same codepath unless necessary
Don't await async operations in a loop (prefer batching, but maintain an upper bound on parallelism that makes sense)
Use strongly-typed configuration classes instead of untyped configuration
Register services in DI container properly following existing patterns

Files:

• src/Altinn.App.Core/Models/DataElementChanges.cs

Learnt from: bjorntore
Repo: Altinn/app-lib-dotnet PR: 1474
File: test/Altinn.App.Core.Tests/PublicApiTests.PublicApi_ShouldNotChange_Unintentionally.verified.txt:233-237
Timestamp: 2025-10-17T07:45:15.474Z
Learning: In Altinn/app-lib-dotnet, maintainers accept source compatibility without guaranteeing binary compatibility across versions because consumers upgrade via NuGet and rebuild. Adding optional parameters to public extension methods (e.g., CancellationToken) is acceptable provided release notes document the change.

Applied to files:

• src/Altinn.App.Core/Models/DataElementChanges.cs

Learnt from: CR
Repo: Altinn/app-lib-dotnet PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-28T08:07:52.106Z
Learning: Applies to **/*.cs : Use CSharpier for code formatting (required before commits). Formatting happens automatically when building due to CSharpier.MSBuild

Applied to files:

• src/Altinn.App.Core/Models/DataElementChanges.cs

[error] 108-108: dotnet csharpier formatting check failed. Expected: Around Line 108: _metadata = []; Actual: Around Line 108: _metadata = []; There is extra spacing around the assignment. Run 'dotnet csharpier check .' or apply formatting to fix.