Fix evalbuff signal quality and add edit history to doc writer #6006

Job	Run time
build-and-check	3m 15s
test-integration-packages/internal	1m 4s
test-integration-packages/billing	1m 6s
test-integration-packages/agent-runtime	47s
test-integration-sdk	1m 31s
test-integration-common	46s
test-integration-cli	43s
test-integration-web	50s
test-packages/billing	51s
test-packages/agent-runtime	45s
test-web	55s
test-packages/internal	55s
test-common	48s
test-sdk	55s
test-.agents	50s
test-cli	53s
	16m 54s

Provide feedback