Record the connectors and what is still read-only

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011LF61rxW1FG5YCD2J9YqjY

ROADMAP.md

@@ -52,6 +52,11 @@ external interfaces. See `docs/architecture/structure.canvas` → *Backend – M
       packages found through the `fluksio.node_types` entry point group; the
       contract is documented in `docs/connectors/` with a working skeleton at
       `connector-skeleton/`. The registry follows later
+- [x] First real connectors written against that contract from outside the engine:
+      WF-RAC aircon, calendar, UniFi presence and Art-Net, in `connectors/`.
+      Built by `make connectors` and installed into the image. Reading only for
+      now — the aircon package cannot produce a command and Art-Net keeps its
+      packets off the wire until `transmit` is switched on
 - [x] Node lifecycle as a protocol (`start`/`stop`/`report_health` on `Node`),
       replacing the controller's per-type isinstance chains — the same hooks a
       connector implements, validated on the built-in nodes first