Rewrite the C FFI over the new per-layer APIs using nim-ffi v0.2.0 typed
{.ffiCtor.}/{.ffiDtor.}/{.ffi.}/{.ffiEvent.} + CBOR, replacing the
hand-written cstring/JSON bridge and the declare/lifecycle scaffolding.
Final API shape from the start (no intermediate request wrappers):
- every {.ffi.} proc takes its parameters directly; the macro bundles them
into the per-proc CBOR request, so no `*Request` objects are needed
- WakuMessage rides the wire directly (its fields are CBOR-serializable)
- multi-parameter {.ffiEvent.} via the rc.3 envelope synthesis
- events are fed by internal nim-broker listeners (no AppCallbacks)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Move waku.nim from waku/factory to under waku/
* remove unused
* Realize Kernel API in scope of Waku class
* Refactor waku/api into messaging_client, waku/api/types and api_conf into logos_delivery/api
* Make liblogosdelivery and wakunode2 compile, remove waku/api.nim as it was just a import orchestrator
* make test compile and run
* Reconcile master's new send tests to LogosDelivery API after rebase
master commits #3965/#3669-followup added two test cases (Edge lightpush
delivery #3847, store-validation timeout) written against the removed
waku/api.nim createNode helper. Rewrite them to the LogosDelivery shape:
createNode -> LogosDelivery.new, node.node -> node.waku.node,
node.brokerCtx -> node.waku.brokerCtx, node.send -> node.messagingClient.send,
and drop the now-implicit mountMessagingClient calls (LogosDelivery.new
mounts the client internally).
