Portability sounds nice until someone has to ship it
What jumped out at me is how familiar this pattern feels: a standard gets announced with a lot of portable, composable language, and then you look closer and realize the hard parts were never actually solved. Packaging is the easy headline. The messy bits are the client behavior, secrets, extension points, and schema compatibility—the stuff that decides whether two implementations really interoperate or just share a logo. That’s why I’m not especially impressed by “Agent Plugins 1.0.0” as a port
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