Upgrade capnp to 0.23; make Session and Membrane generic#1
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- Bump capnp/capnp-rpc/capnpc from 0.19 to 0.23.x - Session(Extension) and Membrane(SessionExt) are now generic, allowing platforms (e.g. wetware/rs) to inject capabilities into the session via the extension field - Export EpochGuard, fill_epoch_builder, StatusPollerServer - Add SessionExtensionBuilder trait for extension injection - NoExtension preserves backward-compat for stem-only use - Update Server trait signatures for capnp 0.23 (Rc<Self>)
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Summary
Session(Extension)andMembrane(SessionExt)generic so platforms can inject capabilities into the session via the extension fieldEpochGuard,fill_epoch_builder,StatusPollerServerfor reuse by downstream cratesSessionExtensionBuildertrait — callback for filling the extension duringgraft()NoExtension+membrane_client()preserve backward compat for stem-only useMotivation
wetware/rs needs to provide epoch-scoped Host and Executor capabilities to WASM guests through the Membrane. Making Session generic lets rs specialize it with its own
WetwareSessionstruct without modifying stem's schema.Test plan
membrane_pollexample buildsmembrane_client()returnsClient<any_pointer::Owned>