//! # Build script — Slice 2e v0.0.35 canonical investigation
//!
//! ## History
//!
//! - **Slice 2c attempts 1-4** (2026-05-21): direct serde / pin / profile /
//!   build_using_defaults — ALL NO solved alloc/exchange_malloc conflict.
//! - **Slice 2c attempt #5 + Slice 2d** (2026-05-24): WASM_BUILD_STD=0 explicit
//!   override → alloc/exchange_malloc RESUELTO. NEW layer: panic_impl duplicate
//!   via serde/std leak transitive.
//! - **Slice 2e v0.0.35** (2026-05-26): re-enable substrate-wasm-builder canonical
//!   con `wasm-build` feature gate. Investigate [patch.crates-io] serde override
//!   + types/std isolation empirical.
//!
//! ## Usage canonical
//!
//! - Default (no feature): build script no-op, mock-WASM Slice 3 fallback active.
//! - `--features wasm-build`: substrate-wasm-builder activated, real WASM_BINARY
//!   build attempted. WASM_BUILD_STD=0 must be set to avoid alloc duplicate.
//!
//! ## Path forward post-Slice 2e canonical
//!
//! Si serde/std leak resolved → Phase 3 pallet-revive smart contracts unblocked
//! Si NOT resolved → document next attempt path (upstream Substrate stable2512-4+
//! wait OR sp-io feature gate audit deeper OR alternative WASM builder).

#[cfg(feature = "wasm-build")]
fn main() {
    substrate_wasm_builder::WasmBuilder::new()
        .with_current_project()
        .export_heap_base()
        .import_memory()
        .build();
}

#[cfg(not(feature = "wasm-build"))]
fn main() {
    // No-op — Slice 3 mock-WASM fallback active.
    // Enable real WASM build with `cargo build --features wasm-build`.
}