Marks radiation dose rate contour line, minimum safe distance zone and its
multiple-strike form done. The tracker now records all 293 registered graphics
as drawable, correctly shaped and fully editable -- 293 / 306 variants, 2
upcoming.

Regenerates what the tracker drives: both README tables, the proven-graphics
list the sample sweep reads, and the hero gallery capture at 1362 features.

A label set in a break in a graphic's own line ignored the host's
labelUsesHostilityColor setting. The safe distance zones' 1 and 2, and the
radiation contour's dose, were handed the LINE colour, so they came out
hostility-coloured whatever the host had chosen; every other label goes through
labelColorOf, which is what reads that setting. All three graphics share the two
call sites, so all three were wrong.

Two image fixes came out of checking the tiles rather than assuming them.

The multiple-strike zone's catalog and picker images were a bare horizontal
stroke. The harness hands a line-based graphic two points and two points cannot
close into a ring, so the tile showed a base the harness could not supply rather
than the symbol.

Fifteen graphics label themselves with the additionalInfo amplifier and the
harness never filled one, so a symbol whose ENTIRE label is that field drew as a
bare outline -- the radiation dose rate contour line was a plain rectangle. The
value is deliberately neutral rather than the radiation plate's dose: one bag
serves all fifteen, and a dose reading on an airfield zone would be worse than
none.

One cost, accepted: avenue of approach now carries three labels and the
collision check flags the pair as marginally overlapping. They are stacked and
legible; the check measures text arithmetically and is a few percent out.

4,108 tests across 118 suites green; audit clean.