docs(agents): the two multi-agent failure modes that cost this branch the most rounds #11046

Job	Run time
filter	8s
Build Core	-1s
Check Generated Artifacts	-1s
Dogfood Regression Gate (${{ matrix.shard }}/2)	-1s
Build Docs	-1s
Temporal Conformance (live PG + MySQL)	-1s
Test Core	-1s
Dogfood Regression Gate	4s
	6s

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