feat(host-agent): start local console by default

docs/CLOUD_DEPLOYMENT.md

@@ -93,7 +93,7 @@ image, repository, log, or general backup.
 
 ### Local Web Console
 
-The Host Agent can optionally serve a small local-only web console on the
+The Host Agent always serves a small local-only web console on the
 edge machine: heartbeat/enrollment status, registered local devices, current
 assignment progress, local device add/edit/remove, a local account password
 change, and recent assignment/heartbeat history. It authenticates with the
@@ -101,7 +101,6 @@ same local account created by `device-host-agent setup` above — there is no
 separate console credential.
 
 ```text
-HOST_AGENT_CONSOLE_ENABLED=false
 HOST_AGENT_CONSOLE_BIND_HOST=127.0.0.1
 HOST_AGENT_CONSOLE_PORT=8765
 HOST_AGENT_CONSOLE_ALLOW_NON_LOOPBACK=false
@@ -109,8 +108,8 @@ HOST_AGENT_CONSOLE_SESSION_TTL_SECONDS=43200
 HOST_AGENT_CONSOLE_HISTORY_LIMIT=200
 ```
 
-- `HOST_AGENT_CONSOLE_ENABLED` — starts the console when `true`; disabled by
-  default, so existing deployments see no new listening port.
+- The Console starts with every Host Agent and binds to `127.0.0.1:8765` by
+  default.
 - `HOST_AGENT_CONSOLE_BIND_HOST` — the address the console binds to; defaults
   to loopback-only.
 - `HOST_AGENT_CONSOLE_PORT` — the TCP port the console listens on.