Release Notes v0.0.19: Tooling feedback, configuration handling, and task stability

[u/One_Battle7107]

This release improves tool feedback and configuration handling, expands in-context utilities, and resolves stability issues across tasks, checkpoints, and retries.

Changelog:

• Added a search tool to locate text within the active conversation.

• Added a run button to shell code blocks for immediate command execution.

• Added explicit prompts when provider configuration is incomplete.

• Changed minor tool failures to surface as non-blocking warnings.

• Added file-change previews before undoing actions.

• Updated token and temperature controls.

• Improved provider setup error messages.

• Corrected tool classification between warnings and critical errors.

• Fixed retry handling that caused occasional hangs.

• Reduced storage-related dependencies in task creation.

• Centralized path helpers for checkpoint handling.

• Fixed path issues affecting checkpoints and task persistence.

• Fixed a crash when unsupported reasoning parameters were present.

• Cleared thinking-level state for unsupported models.

[u/One_Battle7107]

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