docs: EPIPHANIES.md — ledger efficiency + ambient arc-knowledge loss findings #189

Job	Run time
native-backend/stable	51s
Pass MSRV values to other jobs	3s
nostd/thumbv6m-none-eabi/stable	39s
clippy/stable	28s
format/stable	27s
cross_test/i686-unknown-linux-gnu/stable	1m 45s
cross_test/s390x-unknown-linux-gnu/stable	1m 45s
cargo-careful	0s
docs/nightly	0s
miri	0s
blas-msrv	1m 2s
tests/beta	1m 5s
tests/1.64.0	51s
tests/stable	1m 5s
conclusion	0s
	10m 1s

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