Simplify rpc response and error handling for OE

[Kailai-Wang]

Context

This is a big refactoring to the current response and error handling implementation:

• remove PumpxRpcError completely and use DetailedError instead as the only wrapper
• greatly reduce the error codes, see error_code.rs
• use jsonrpsee raw error_code and types when possible
• write many helpers to reduce verbosity/duplicate and enhance readability, see detailed_error.rs, RpcResultExt, RpcOptionExt, extract_omni_account, parse_as, parse_rpc_params ... etc

As result, more than 2000 LoC can be removed:

with 2,155 additions and 4,490 deletions.

I think some places could be further improved, e.g. verify_auth, utils/auth.rs.

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[claude]

Claude encountered an error —— View job

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PR Review: Simplify RPC Response and Error Handling

I'm conducting a comprehensive review of this major refactoring. Here's my progress:

Review Tasks

• Analyze the new error handling architecture (DetailedError vs PumpxRpcError)
• Review error code simplification changes
• Examine new utility modules (auth.rs, validation.rs, types.rs)
• Check method implementations for proper pattern usage
• Assess security implications of the changes
• Evaluate performance considerations
• Check for potential bugs or regressions
• Provide specific feedback with line references

Initial Findings

Critical Issue Found:

• Bug in error_code.rs:17 - WILDMETA_SERVICE_ERROR_CODE has positive value 32165 instead of negative. Should be -32165 to follow JSON-RPC specification.

Continuing analysis...

[kziemianek]

I left small comments. This is a good code improvement.

[kziemianek]

Maybe middleware could be used for that