merge: testing → main (reconcile 2-week divergence)

decnet/agent/__init__.py

@@ -0,0 +1,7 @@
+"""DECNET worker agent — runs on every SWARM worker host.
+
+Exposes an mTLS-protected FastAPI service the master's SWARM controller
+calls to deploy, mutate, and tear down deckies locally.  The agent reuses
+the existing `decnet.engine.deployer` code path unchanged, so a worker runs
+deckies the same way `decnet deploy --mode unihost` does today.
+"""