Ollama provider bundle.
Purpose
-------
Importing this package registers :class:`OllamaProvider` into the
module-level registry at ``oc_chat.core.provider_plugin.registry``.
Responsibilities
----------------
- Self-register :class:`OllamaProvider` on import.
- Re-export :class:`OllamaProvider` for direct access.
Diagnostics
-----------
Domain: OC_CHAT.CLIENT
Levels:
L2 — lifecycle events
L3 — semantic details
L4 — deep tracing (module loaded)
Contracts
---------
- Side effect on import: ``OllamaProvider.register()`` runs once.
Repeated imports are idempotent.
Dependencies
------------
- oc_diagnostics (_dbg)
- providers.ollama.provider (OllamaProvider, registered on import and re-exported)