Reloading Planning re-entered the generation view ("Generating initial
plan…", Stop button, elapsed timer, 8s watchdog) while merely fetching a
persisted session. A new session_loading view state renders a neutral
"Loading session…" spinner during hydration; the generating view is
reserved for sessions the server reports as generating. Unrecognized
persisted session shapes now land in the retryable error view instead of
spinning forever.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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