OpenCode titles a session from the conversation, but asynchronously — a finished turn of
ours ended up called "Single color in oc-red2.png", better than anything we would generate.
Until then the session is literally named "New session - 2026-08-10T15:44:17.178Z".
That window is exactly when a session is most visible: /chat/live shows turns that are
RUNNING, so the placeholder is what the panel catches, and a live row was being labelled
with a timestamp string.
Recognise it and treat it as untitled, so the good name arrives on its own. Passing --title
on the run was the other option and is worse: it fixes the transient case by permanently
replacing opencode own title with a truncated prompt, degrading it where it lasts longest.
A pattern match rather than startsWith, because a genuine title is allowed to begin with
those words. Two defects the tests caught while writing them: a whitespace-only title was
not treated as unnamed, and the mapping let undefined through where a string was required.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
