/dm/narrate now makes a real Ollama call (Task 7). The role-endpoint
loop tests in test_endpoints.py had no mock, so every default pytest
run was silently hitting a live Ollama instance on localhost:11434 —
breaking the hermetic-suite constraint. Add an autouse fixture that
stubs narrate.ollama_client.chat and narrate.call_log.record so all
five endpoints stay hermetic; assertions (200 on valid, 422 on
invalid) are unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Phillip Tarrant
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