Experimenting with how Jev can help in a coding harness.

Experimenting with how Jev can help in a coding harness. Built a hybrid harness that defers all decision making to Jev, and use Astra for things it cannot do, and for code generation. Its probably also doable to have a lexicon/ast manipulation (think an LSP) that takes its instructions from Jev too, though would need benchmarks to see if its worth it.