Fix evalbuff signal quality and add edit history to doc writer (#483) #6008

Job	Run time
build-and-check	3m 5s
test-integration-packages/billing	1m 7s
test-integration-packages/internal	1m 9s
test-common	51s
test-.agents	45s
test-packages/agent-runtime	49s
test-cli	53s
test-packages/billing	43s
test-sdk	46s
test-web	49s
test-packages/internal	58s
test-integration-common	38s
test-integration-packages/agent-runtime	41s
test-integration-sdk	1m 40s
test-integration-cli	39s
test-integration-web	44s
	16m 17s

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