fix: return type

[JohnRichard4096]

Summary by Sourcery

Adjust chat response streaming to treat both MessageContent and raw string chunks as streamable output while preserving UniResponse as the final result, and bump the package patch version.

Bug Fixes:

• Ensure string chunks returned from chat completion are correctly handled as streamed message content rather than being ignored.

Build:

• Bump project version from 0.4.3 to 0.4.3.1.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adjusts chat streaming type handling to treat both MessageContent and raw strings uniformly while ensuring UniResponse is captured as the final response, and bumps the package patch version.

Sequence diagram for updated chat streaming type handling

sequenceDiagram
  participant ChatManager
  participant ChatAdapter

  ChatManager->>ChatAdapter: call_completion(send_messages, config, preset)
  loop for each chunk
    ChatAdapter-->>ChatManager: chunk
    alt chunk is UniResponse
      ChatManager->>ChatManager: set response = chunk
    else chunk is MessageContent or str
      ChatManager->>ChatManager: yield_response(chunk)
    end
  end
  ChatManager->>ChatManager: if response is None raise RuntimeError
  ChatManager-->>ChatAdapter: final response consumed

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Class diagram for updated chat streaming types in _process_chat

classDiagram
  class ChatManager {
    +config
    +preset
    +yield_response(content)
    +_process_chat()
  }

  class UniResponse {
  }

  class MessageContent {
  }

  class StringMessageContent {
    +StringMessageContent(value)
  }

  ChatManager ..> UniResponse : uses as final response
  ChatManager ..> MessageContent : streams instances
  ChatManager ..> StringMessageContent : previously wrapped raw strings
  MessageContent <|-- StringMessageContent : specialization

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File-Level Changes

Change	Details	Files
Update chat streaming loop to correctly discriminate between UniResponse, MessageContent, and string chunks.	Remove the special-case branch that wrapped string chunks in StringMessageContent before yielding. Ensure UniResponse chunks are captured as the final response object instead of being yielded directly. Allow the yield branch to handle both MessageContent and string chunks via a unified isinstance check, delegating to yield_response for emission.	src/amrita_core/chatmanager.py
Bump library patch version to reflect the bugfix.	Increment project version from 0.4.3 to 0.4.3.1 in project metadata.	pyproject.toml uv.lock

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