Fix EachAI decoding error and add parameters value in response

[FurkanSimsir]

Fix EachAI Workflow Execution Response Decoding

Summary

Updated EachAIWorkflowExecutionResponseBody to align with the EachAI API documentation and handle inconsistent response formats that were causing decoding failures.

Changes

Added Fields

• parameters: [Parameter]? - Array of workflow parameters with name/value pairs

Updated Structs

• EachAIWorkflowExecutionResponseBody: outputJson: String? field with conditional decoding
• StepResult: outputJson: String? field with conditional decoding
• Parameter: New struct for workflow parameters

Conditional Decoding

The EachAI API inconsistently returns output_json fields as either:

• A plain string: "output_json": "value"
• An array of strings: "output_json": ["value"]

Created KeyedDecodingContainer.decodeStringOrArrayIfPresent() extension to handle both formats gracefully by:

1. Attempting to decode as String
2. Falling back to [String] and taking the first element
3. Returning nil if both fail

This prevents decoding failures when the API returns unexpected formats.

Files Changed

• Sources/AIProxy/EachAI/EachAIWorkflowExecutionResponseBody.swift

[lzell]

The EachAI API inconsistently returns output_json fields as either:

A plain string: "output_json": "value"
An array of strings: "output_json": ["value"]

Interesting, thanks for reporting @FurkanSimsir ! I tagged one of the founders of EachLabs on LinkedIn, I'm seeing if we can get one of their engineers to take a look