• Review the current Startup.cs file and understand the PreStartup method
• Add #pragma warning disable CS0618 before the ImplementationManager.Load calls
• Add a comment explaining why the pragma is required
• Add #pragma warning restore CS0618 after the calls
• Build the project to ensure the change compiles correctly
• Verify the change matches the desired replacement in the problem statement

This pull request was created as a result of the following prompt from Copilot chat.

Replace the PreStartup() implementation in Rdmp.Core/Startup/Startup.cs to silence the obsolete-warning CS0618 around ImplementationManager.Load() calls while keeping the calls intact.

File to modify: Rdmp.Core/Startup/Startup.cs (ref: bbe80bc, BlobSha: edfec72d255cc138200310c6be9e82949a1980bf)

Current content around PreStartup (lines ~279-285):

public static void PreStartup()
{
ImplementationManager.Load();
ImplementationManager.Load();
ImplementationManager.Load();
ImplementationManager.Load();
}

Change requested:

• Wrap those four ImplementationManager.Load() calls with #pragma warning disable CS0618 and #pragma warning restore CS0618 so the obsolete warning does not fail the build, but the calls remain.
• Keep the rest of the file untouched.
• Add a short comment explaining why the pragma is required (documentation states the calls are obsolete but they are still necessary at runtime).

Desired replacement method:

public static void PreStartup()
{
// ImplementationManager.Load() is marked obsolete but is still required at runtime for explicit registration of DBMS implementations.
#pragma warning disable CS0618 // ImplementationManager.Load() is obsolete but required
ImplementationManager.Load();
ImplementationManager.Load();
ImplementationManager.Load();
ImplementationManager.Load();
#pragma warning restore CS0618
}

Commit message: "Silence CS0618 for ImplementationManager.Load calls in PreStartup while keeping required loads"

PR title: "Silence obsolete warning for ImplementationManager.Load in PreStartup"

Repository: jas88/RDMP

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