When the OllamaBanner appears, it was generic enough that the user
couldn't tell whether the env var was missing, the LAN host was
unreachable, the model was uninstalled, or DNS was failing. Log the
resolved endpoint at startup with a `fromEnv` flag so we can confirm
INKLING_OLLAMA_ENDPOINT was actually read, and render the underlying
health-check reason as a small subtitle under the banner copy.
The user-facing primary message still avoids the forbidden tone words
("실패"/"끊김"/"연속 실패"); the diagnostic line is technical and only
appears when status.reason is set.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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