Feat/wasm call extern#443
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Adds the generic Option A surface from bindings #5: a single extern that lowers to `exports[name](...args)` on the --deno-esm backend, with Number coercion so i32/i64/f32/f64 returns all coerce to Float at the AffineScript boundary. This is the smallest-scope / highest-leverage Tier-1 binding item — it unblocks idaptik vm/wasm (740 LoC) and every future WASM-host integration. Typed per-Zig-fn shims can layer on top per-consumer where typing discipline outweighs the generic surface's flexibility. Surface: pub extern fn wasmCall( exports: WasmExports, name: String, args: [Float] ) -> Float; Lowering (lib/codegen_deno.ml): __as_wasmCall(exports, name, args) = Number(exports[name](...(args || []))) Test fixture tests/codegen-deno/wasm_call.{affine,harness.mjs} exercises the round-trip with a 41-byte hand-built wasm module exporting add(i32, i32) -> i32; all 7 codegen-deno harnesses pass. Closes #414. Updates docs/bindings-roadmap.adoc row #5 status ◐ → ● and points the rationale at this PR. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Signed-off-by: Jonathan D.A. Jewell <6759885+hyperpolymath@users.noreply.github.com>
🔍 Hypatia Security ScanFindings: 82 issues detected
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