docs(proposals): salesagent side-car experiment plan (full GAM) #1142

Job	Run time
Validate conventional commit format	9s
Postgres conformance tests (Postgres 16)	1m 0s
AdCP storyboard runner — examples/seller_agent.py	1m 34s
Downstream import smoke (representative consumer symbols)	26s
Validate schemas are up-to-date	3m 14s
AdCP storyboard runner — v3 reference seller (translator)	1m 33s
AdCP storyboard runner — examples/multi_platform_seller (PlatformRouter)	1m 23s
Test Python 3.12	3m 21s
Test Python 3.11	2m 57s
Test Python 3.10	3m 19s
Test Python 3.13	3m 12s
v3 reference seller — pytest (respx-mocked upstream)	36s
	22m 44s

Provide feedback