feat(server/auth): allow_unauthenticated for network-trust deployments #2025

Job	Run time
Postgres conformance tests (Postgres 16)	1m 26s
Downstream import smoke (representative consumer symbols)	39s
v3 reference seller — pytest (respx-mocked upstream)	41s
Validate conventional commit format	13s
Test Python 3.11	6m 52s
AdCP storyboard runner — examples/seller_agent.py (@adcp/sdk adcp-3.0)	2m 9s
AdCP storyboard runner — sales-proposal-mode (proposal_finalize)	1m 42s
Validate schemas are up-to-date	20m 51s
AdCP storyboard runner — examples/multi_platform_seller (PlatformRouter)	1m 55s
AdCP storyboard runner — examples/seller_agent.py (@adcp/sdk adcp-3.1)	2m 54s
Test Python 3.10	7m 0s
Test Python 3.13	6m 20s
AdCP storyboard runner — v3 reference seller (translator)	2m 42s
Test Python 3.12	6m 47s
AdCP storyboard runner — examples/seller_agent.py	4s
	1h 2m 15s

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