docs(.claude/ATT): add §14 Reading-Phases + §15 Cognitive-AntiPatterns #326

Job	Run time
miri	34m 56s
format/stable	24s
Pass MSRV values to other jobs	3s
nostd/thumbv6m-none-eabi/stable	29s
clippy/1.95.0	39s
docs/nightly	49s
hpc-stream-parallel/rayon	1m 25s
native-backend/stable	8m 18s
cargo-careful	39s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	-1s
tests/1.95.0	10m 36s
blas-msrv	52s
tests/beta	10m 48s
tests/stable	10m 30s
conclusion	0s
	1h 20m 27s

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