A `$$math` block whose opening line carries math and whose closing `$$` sits
at the end of the last math line parsed as an unclosed flow:
micromark-extension-math reads the opening line's text as fence meta and
accepts a closing fence only on a line whose content is exactly `$$`. The
flow then consumed the following document, and KaTeX rendered the block plus
that swallowed text as one error span. Fence meta was also silently dropped
because the renderer reads only the math node's value.
The compatibility layer's dollar flow now owns every `$$` fence, spans
multiple lines, and stops its paragraph-interruption check before the line
ending, as the upstream flow does; registering it after `math()` is what
gives it that precedence in micromark.
The A/B winner over the single-line StatsLine: a gauge pill (counts + TPS,
opening the session-stats dialog) and a database pill (billed total +
cache-hit share, opening the exact token-usage dialog), sharing a new
stat-dialog module. StatsLine and its dead locale keys are deleted, the
gauge icon is optically centered, and the composer keeps its 4px clearance
through the data-composer-stats contract. Agent Note added; stale
StatsLine references across implemented notes updated in place.
- stateVersion starts at 1: the package is new, no persisted rows predate it
- pendingCalls pairs by own key so a provider callId naming a prototype
property cannot fold toolMs to NaN on an unmatched crash-recovery result
- StatsLine folds the window fallback only when no sessionStats value is
served, and gates the token group on actual token activity instead of
steps, so failed-only sessions drop the zero-token group
- correct the crash-step counting semantics in the README and Agent Note:
recovery closes interrupted steps with a synthetic step/end on reload
- reword the window-scoped alternative as a plain rejected option and name
isTokenDelta's home beside the StreamChunk type
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