roadmap: mark phase 2 done

docs/ROADMAP.md

@@ -19,16 +19,16 @@ Phases below are sized to land as discrete commits. Each phase ends with
 - Round-trip tests for the encoder
 - Generator script committed at `docs/etf_vectors.erl`
 
-## Phase 2 — EPMD client
+## Phase 2 — EPMD client ✅
 
 EPMD (Erlang Port Mapper Daemon) maps node names to TCP ports.
-Tiny synchronous TCP client.
 
-- Connect `epmd_host:4369` (configurable)
-- `PORT_PLEASE2_REQ` (113) → port + dist version range
-- Return `EpmdNodeInfo(port, lo_ver, hi_ver, node_type, proto)`
-- Tests: live EPMD on localhost (skip if not running), unit tests
-  against a recorded byte stream
+- Synchronous TCP client
+- `PORT_PLEASE2_REQ` (122) → `EpmdInfo(name, port, node_type, protocol, hi_ver, lo_ver, extra)`
+- Returns `None` cleanly on unregistered node, raises `EpmdError` on
+  socket failures
+- Tests: recorded byte streams from real EPMD + live integration that
+  spawns its own `erl -sname` and tears it down
 
 ## Phase 3 — Distribution handshake