The composition legend and tooltips now show the exact system/tools/
messages counts of the chat composer ring's click-open panel (the
token-meter's contextBreakdown projection) instead of the fold's own
sums re-anchored to the provider total: parts carry the heuristic count
(raw) for display beside the provider-anchored bar width (value), and
the message bucket subdivides into the four surface categories by the
fold's per-category ratios, always summing exactly to the official
message figure. Absent the projection (older harness), the fold's own
sums serve unchanged.