single stream

[ankushchhabradelta4infotech-ai]

Description

Fixes duplicate assistant bubbles in single-turn streaming mode by correctly propagating streamMode into AbstractChat config and tightening done-payload reconciliation.

Fixes #

Changes

• Added missing streamMode assignment in AbstractChat constructor config.
• Added a single-turn guard to skip assistant messages from done.messages reconciliation.
• Prevented intermediate assistant message leakage when tool action tracking is incomplete (e.g., missing action:start/end), which previously created duplicate bubbles.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)

Testing

• I've tested this locally
• I've added/updated tests
• All existing tests pass

Checklist

• My code follows the project's style guidelines
• I've updated the documentation (if needed)
• I've added tests that prove my fix/feature works
• New and existing tests pass locally

Screenshots (if applicable)

N/A (behavioral streaming fix)

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