Cross-VM resource budget: instantiation-state hooks + napi budget wiring

[Arshia001]

Stack 1/4 (wasmer). Base: main. → next: wasmer-scope-bound-lifetimes.

Wasmer-side of the cross-VM resource budget (companion to wasmerio/napi):

• thread per-instantiation state through the runtime hooks; report instance-configuration failures distinctly; make the state types opaque
• napi submodule bumps tracking the budget work (Phases 1–3, §7.1–7.3)

⚠️ Stacked chain, merge bottom-up; not yet mergeable (ECO-415/416 follow-ups open).

[Copilot]

Pull request overview

Threads opaque per-instantiation state from Runtime::additional_imports into Runtime::configure_new_instance so runtime hooks (including N-API and Wasm C API wiring) can reliably pair pre-instantiation import creation with post-instantiation setup across concurrent instantiations.

Changes:

• Extends WASIX Runtime hook APIs to return and consume an opaque InstantiationState, and updates PluggableRuntime/OverriddenRuntime to route per-hook state correctly.
• Wires the new instantiation-state flow through WASIX env instantiation and CLI runtime wrappers (N-API + Wasm C API), and introduces a distinct WasiThreadError for instance-configuration failures.
• Refactors Wasm C API imports to carry per-instantiation session state explicitly, removing the global pending-session queue and adding targeted tests.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
lib/wasix/src/state/linker/runtime_hooks.rs	Captures per-instantiation state from runtime hooks and passes it into instance configuration.
lib/wasix/src/state/env.rs	Propagates instantiation state through env instantiation and distinguishes configuration failures from import creation failures.
lib/wasix/src/runtime/mod.rs	Introduces InstantiationState + InstantiationHook and updates runtime implementations to pair import/setup phases.
lib/wasix/src/os/task/thread.rs	Adds InstanceConfigurationFailed to clearly classify post-instantiation setup failures.
lib/cli/src/commands/run/runtime.rs	Updates CLI monitoring runtime to forward the new hook signatures.
lib/cli/src/commands/run/mod.rs	Updates N-API and Wasm C API runtime wrappers to box/downcast instantiation state when configuring instances.
lib/c-api-imports/src/lib.rs	Moves Wasm C API hook pairing to explicit per-instantiation state (session), simplifying concurrency correctness and adding tests.
Cargo.lock	Updates locked dependency to wasmer-c-api-imports.

Comments suppressed due to low confidence (2)

lib/wasix/src/state/linker/runtime_hooks.rs:34

• configure_new_instance failures are also wrapped as RuntimeHookError without indicating which phase failed. Add context here to make runtime-hook failures easier to diagnose from logs/error reports.

        runtime
            .configure_new_instance(
                module,
                &mut store_mut,
                &instance,

lib/cli/src/commands/run/mod.rs:742

• If the instantiation-state downcast fails here, the error message is too generic to quickly identify what wiring is broken. Include the expected type name in the error message.

                let state = *state
                    .context("missing Wasm C API instance setup state")?
                    .downcast::<wasmer_c_api_imports::WasmCapiInstantiationState>()
                    .map_err(|_| anyhow!("unexpected instance setup state"))?;