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Renn F
b1d5dbb240
get_messages used strict timestamp inequalities with a non-deterministic order_by(timestamp.desc()), so equal-timestamp messages were cut by limit on one page and excluded (strict < T / > T) from the next — they vanished across pages. Bundled the (timestamp, id) pair into a MessageCursor dataclass so the next page resumes exactly past the cursor's id at the shared timestamp (or_: strictly-older OR same-timestamp-smaller-id for before; the mirror for after), with a deterministic order_by(timestamp.desc(), id.desc()) so the last-item cursor is unambiguous. id is None for a legacy timestamp- only cursor (strict inequality, prior behavior). The route builds cursors from the flat before/before_id + after/after_id HTTP params; the schema now carries the tie-breaker ids. Also clears PLR0913 (cursors replace the before_id/after_id params).