hivectl: add agent <name> watch to follow live events from the CLI

docs/tools/hivectl-cli.md

@@ -32,6 +32,7 @@ This document contains the help content for the `hivectl` command-line program.
 * [`hivectl agent set-parent`↴](#hivectl-agent-set-parent)
 * [`hivectl agent set-limits`↴](#hivectl-agent-set-limits)
 * [`hivectl agent choom`↴](#hivectl-agent-choom)
+* [`hivectl agent watch`↴](#hivectl-agent-watch)
 * [`hivectl agent quota`↴](#hivectl-agent-quota)
 * [`hivectl agent quota show`↴](#hivectl-agent-quota-show)
 * [`hivectl agent quota set`↴](#hivectl-agent-quota-set)
@@ -348,6 +349,7 @@ Everything here targets a single named agent (`hivectl agent foo restart`, `hive
 * `set-parent` — Move this agent in the topology tree — under a new parent, or to root
 * `set-limits` — Declare this agent's CPU/memory limits, overriding the hive-wide defaults
 * `choom` — Open an interactive Claude session inside this agent's container
+* `watch` — Follow this agent's live turn/tool-call event stream from the CLI
 * `quota` — This agent's disk accounting + optional quota via btrfs qgroups
 * `subvol` — btrfs subvolume management for this agent's state dir
 
@@ -476,6 +478,16 @@ A fresh session by default, or resume a prior one. Requires root and a running c
 
 
 
+## `hivectl agent watch`
+
+Follow this agent's live turn/tool-call event stream from the CLI.
+
+Dials the same unix socket the gateway's nginx already proxies through (no gateway hop, no daemon round-trip for the stream itself) and prints one compact line per event. `Ctrl-C` to stop. Requires the agent to be running (its harness must have bound the web UI socket).
+
+**Usage:** `hivectl agent watch`
+
+
+
 ## `hivectl agent quota`
 
 This agent's disk accounting + optional quota via btrfs qgroups.