r1 M5: the runtime and field chunks release a card's frame and field cache
on disconnect (ledRelease from disconnectedCallback), never cache for a
disconnected card, and a chunk that lands after disconnect renders nothing
(the card's LED hook is connected-only). The profile now reports the three
caches of the shown space separately (shapes ≤ 50, visibility ≤ 50, retained
per-emitter fans ≤ 2500) through the runtime's ledStats, asserts 0 retained
entries and 0 live LED timers/frames/observers after every disconnect,
judges the Long Tasks of a 100-step camera series as well as the interaction
profile's camera scenario, runs one extra cold mount whose runtime response
is held while the card is removed, and enforces ≥ 7 samples after ≥ 1
warm-up — also on reports merged from parts (--warmup-only, --merge).
Issue: #780
User-Visible: no