//! # Build script — Slice 2c canonical multi-attempt findings registered
//!
//! Slice 2b investigation registered (sesión 1, 2026-05-21) — 4 fix attempts
//! NO solved canonical:
//!   1. Remove direct serde dep (transitive from FRAME) — NO solved
//!   2. Pin serde =1.0.219 + =1.0.217 — NO solved
//!   3. Remove profile.release lto/codegen-units customization — NO solved
//!   4. WasmBuilder::build_using_defaults() upstream pattern — NO solved
//!
//! Slice 2c attempt #5 (Charon sesión 2 cont. 2026-05-24) — empirical test
//! WASM_BUILD_STD=0 explicit override canonical. Upstream docs confirman:
//! "WASM_BUILD_STD is disabled by default for WASM target and Rust >= 1.84".
//!
//! ## Attempt #5 finding canonical (BIG progress)
//!
//! `WASM_BUILD_STD=0` explicit + WasmBuilder re-enabled → **alloc/exchange_malloc
//! issue RESUELTO canonical**. Pero canonical surface NEW error canonical:
//!
//! ```
//! error[E0152]: found duplicate lang item `panic_impl`
//!   --> sp-io-40.0.1/src/lib.rs:1774:1
//!   = note: the lang item is first defined in crate `std` (which `serde` depends on)
//!   = note: first definition in `std` loaded from libstd-*.rlib
//!   = note: second definition in the local crate (`sp_io`)
//! ```
//!
//! Diagnosis canonical: serde está siendo pulled con `std` feature canonical
//! transitively desde algún dep canonical (parity-scale-codec o frame-*) →
//! libstd canonical linked en wasm32 → conflict canonical con sp_io::panic
//! handler canonical (que define panic_impl para no_std runtime).
//!
//! ## Path canonical resolución pending (Slice 2d canonical future)
//!
//! Requires deeper investigation canonical:
//! - Inverted feature tree exact culprit identification canonical
//! - Override canonical: `[patch.crates-io] serde = { ... }` con strict no-std
//! - O explicit `WASM_BUILD_RUSTFLAGS` canonical override
//! - O wait stable2512-4+ upstream canonical fix
//!
//! Mientras Slice 2d land canonical, build script canonical mantain no-op +
//! Slice 3 (v0.0.13) mock-WASM fallback canonical path estable canonical.

fn main() {
    // No-op canonical — Slice 2d canonical land WASM_BINARY post serde/std
    // leakage canonical resolution canonical. Slice 3 mock-WASM (chain_spec
    // builder JSON canonical) sigue siendo el path canonical estable canonical.
}