Initial commit: WAFER (WebAssembly Forth Engine in Rust)

Optimizing Forth 2012 compiler targeting WebAssembly with IR-based
compilation pipeline, multi-typed stack inference, subroutine threading,
and JIT/consolidation modes. Rust kernel with ~35 primitives and Forth
standard library for core/core-ext word sets.

crates/core/src/consolidate.rs

@@ -0,0 +1,16 @@
+//! Consolidation recompiler: merge all JIT-compiled words into a single WASM module.
+//!
+//! After interactive development, `CONSOLIDATE` recompiles everything:
+//! - All `call_indirect` replaced with direct `call`
+//! - Cross-word optimizations (inlining, constant propagation)
+//! - Single WASM module output for maximum performance
+
+// TODO: Step 12 - Consolidation recompiler implementation
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn placeholder() {
+        // Consolidation tests will be added in Step 12
+    }
+}