Optimize for readability

Write code that clearly communicates intent by using appropriate naming and formatting techniques. Improve readability by:

1. Replacing magic numbers and string literals with named constants: ```csharp // Instead of: if (valueType.Module == SystemModule && valueType.Name.StartsWith(“ValueTuple`”, StringComparison.OrdinalIgnoreCase))

// Prefer: private const string ValueTuplePrefix = “ValueTuple`”; if (valueType.Module == SystemModule && valueType.Name.StartsWith(ValueTuplePrefix, StringComparison.OrdinalIgnoreCase))

2. Using explicit types instead of `var` when the type isn't obvious:
```csharp
// Instead of:
var relativePathToSpec = GetFilteredFileSpecs(fileSpecs);

// Prefer:
Dictionary<string, FileSpec> relativePathToSpec = GetFilteredFileSpecs(fileSpecs);

1. Using standard language patterns like Array.Empty<byte>() over raw literals: ```csharp // Instead of: SHA256.Create().ComputeHash([])

// Prefer: SHA256.Create().ComputeHash(Array.Empty())

4. Using pattern matching for null checks:
```csharp
// Instead of:
if (m_getterMethod != null && m_getterMethod.IsVirtual)

// Prefer:
if (m_getterMethod is not null && m_getterMethod.IsVirtual)

1. Adding parentheses to clarify operator precedence in complex conditionals: ```csharp // Instead of: bool taken = (opcode is ILOpcode.brtrue or ILOpcode.brtrue_s && val.Value != 0) || (opcode is ILOpcode.brfalse or ILOpcode.brfalse_s && val.Value == 0);

// Prefer: bool taken = ((opcode is ILOpcode.brtrue or ILOpcode.brtrue_s) && val.Value != 0) || ((opcode is ILOpcode.brfalse or ILOpcode.brfalse_s) && val.Value == 0);

6. Using operators for more concise code when available:
```csharp
// Instead of:
Vector256<int> result = Vector256.And(Vector256.LoadUnsafe(ref left, i), Vector256.LoadUnsafe(ref right, i));

// Prefer:
Vector256<int> result = Vector256.LoadUnsafe(ref left, i) & Vector256.LoadUnsafe(ref right, i);