refactor: cut TS world state and NAPI AVM over to WSDB IPC; delete NAPI WSDB

[charlielye]

Summary

Cuts TypeScript world-state usage and the in-process C++ AVM NAPI path over to the standalone generated @aztec/wsdb package and aztec-wsdb service from the lower stack.

This PR is now stacked after the bb.js migration, so it consumes the new generated package/runtime architecture instead of the old hand-rolled IPC pieces.

Stack

1. feat(ipc): add /ipc-codegen and /ipc-runtime foundation packages #23610 cl/ipc-foundation
2. refactor(wsdb): migrate aztec-wsdb to ipc-codegen + ipc-runtime #23611 cl/ipc-wsdb-migrate
3. refactor(bbapi): migrate bb binary to ipc-codegen + ipc-runtime #23612 cl/ipc-bb-migrate
4. refactor(barretenberg-rs): migrate to ipc-codegen + ipc-runtime; drop PipeBackend #23613 cl/ipc-bb-rs-migrate
5. refactor(bb.js): migrate to ipc-codegen + ipc-runtime; delete legacy bb::ipc #23614 cl/ipc-bb-js-migrate
6. refactor: cut TS world state and NAPI AVM over to WSDB IPC; delete NAPI WSDB #23036 cl/ipc-3-avm-wsdb-cutover — this PR
7. feat: add aztec-avm + aztec-cdb binaries and IPC supporting code (inert) #23084 cl/ipc-4-avm-binary
8. feat: AVM cutover — delete NAPI AVM, wire IPC simulator pool + CDB IPC server [PR 3b] #23697 cl/ipc-5-avm-cutover

What changes

C++ / NAPI AVM path

• AvmSimAPI::simulate takes a LowLevelMerkleDBInterface& instead of an in-process WorldState&.
• NAPI AVM accepts a WSDB socket path and constructs a generated wsdb IPC client plus VM2 wsdb adapter per simulation.
• NAPI world-state module is deleted; the NAPI module no longer exposes in-process WorldState.
• NAPI module links the current ipc_runtime path from the lower stack.

TypeScript world-state path

• World-state startup is encapsulated behind the world-state service/facade instead of leaking binary discovery into callers.
• NativeWorldStateService spawns aztec-wsdb through the generated @aztec/wsdb package.
• The generated wsdb wrapper resolves its service binary from the installed/local arch package optional dependency.
• The old WorldStateRevisionWithHandle shape is removed; callers use ordinary revisions and, where needed, the wsdb socket path.
• Cleanup paths close spawned wsdb processes explicitly in tests and service lifecycles.

End state after this PR

The TS world-state path and the C++ AVM path both talk to world state over IPC. The in-process NAPI WSDB module is gone.

Validation

• wsdb/bootstrap.sh
• yarn-project/yarn install --immutable on this branch after generated package lock updates.
• Root ./bootstrap.sh passed on this branch during stack validation.

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​aztec/​wsdb@​0.0.0-use.local

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