feat: add Gerrit integration connector for code review workflows #1200

Job	Run time
detect-changes	9s
Backend Unit Tests	2m 14s
Ambient Runner Tests	3m 14s
Frontend Unit Tests (Vitest)	1m 10s
API Server Integration Tests	-1s
CLI Build and Tests	-1s
Script Tests (model-discovery)	-1s
summary	3s
	6m 47s

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