BenchNative

Hand-written JVM baseline for the two benchmarks in examples/bench-*.

Run with /te bench. The workloads are identical to the TypeScript versions — the only difference is that this code was written directly in Kotlin and compiled by kotlinc, whereas Tessera compiles the TS to JVM bytecode via swc4j. Comparing the two numbers in the same client shows how close Tessera's output runs to code a human wrote against the JVM.