tests: add --worker <binary> to run the pilot suite against the idalib worker

run()/main() gain a worker path: IdaTui(open_path=binary, backend="worker",
ensure_server=False) instead of attaching to an mcp supervisor via --db. boot()
and every scenario are backend-agnostic (they drive app.program), so the full
31-scenario suite runs unchanged on the worker. This is the verification gate
before deleting the mcp transport:

    ~/ida-venv/bin/python tests/test_scenarios.py --worker targets/echo

The default (no --worker) still uses the mcp supervisor + --db, so nothing
regresses until we pull the plug.

0 files changed, 0 insertions, 0 deletions