chat-ui

2e46248b - Scope round-reasoning dedup to a positional match; omit phantom empty turns in the plain flow too

Scope round-reasoning dedup to a positional match; omit phantom empty turns in the plain flow too The substring fallback for matching a round's persisted reasoning against the extracted <think> parts scanned the entire remainingParts array and deleted every part merely containing it as a substring. A short, unrelated final reasoning block (e.g. "weather") could be silently deleted just because an earlier round's mismatched reasoning happened to contain it as a substring (e.g. "Need weather forecast"). Parts are chronologically ordered and rounds are processed oldest-first, so only the earliest still-unconsumed part can be attributed to the current round when exact match fails; the fallback no longer scans past it. The plain (non-tool-replay) reasoning-attachment branch had the same phantom-empty-message issue already fixed on the tool-replay path: a turn interrupted before any visible text, with reasoning gated off or producer-mismatched, replayed as {role: assistant, content: ""} with nothing else attached. Omitted entirely in that case, matching the tool-replay fix.