Run personas in panes and subagents

Open persona panes in another tool

ljos doctor names the tool persona panes open in:

$ ljos doctor --all | grep panes
ok  panes   herdr opens persona panes; tmux also here

herdr opens one workspace a persona, in the persona’s home and as its seat, and types the pane script into the root pane. It hands the runner each task through herdr agent prompt, or as typed keys when herdr does not know the runner as an agent. tmux gives each persona a window in the session ljos-personas. LJOS_PANE_TOOL narrows the choice to the one it names. Any other tool is a [[tool]] table in ~/.config/ljos/harnesses.toml, with each verb but pane_pointer an argv or a list of argvs. A table named like a built-in shape replaces it. A terminal multiplexer with a command line takes a table like this:

[[tool]]
name = "mytool"
detect = ["mytool", "--version"]
open = [["mytool", "new-pane", "--cwd", "{home}", "--name", "{label}", "--", "sh", "{script}"]]
prompt = [["mytool", "send", "--pane", "{label}", "{line}"], ["mytool", "send-key", "--pane", "{label}", "Enter"]]
alive = ["mytool", "has-pane", "{label}"]
ready_s = 8

A tool that refuses says so in the line ljos ask prints, with the tool’s own words, and the next tool is tried.

Spawn a persona as a subagent

$ ljos agents --harness grok

The ok line names the agents directory it wrote.

Every persona becomes ~/.grok/agents/ljos-NAME.md, and the build harness’s main agent can spawn it by name on a decision with spawn_subagent and subagent_type ljos-reviewer. The persona reads ljos brief, casts one ballot before reading the others, notes why, and stops. The build harness runs it in capabilityMode: execute, with commands and no edit tool. The terminal harness reads the same definitions from ~/.claude/agents, and the editor harness’s copies go to ~/.cursor/agents; both ignore that mode, and the body tells the persona not to edit. onboard writes the definitions for a runner whose table names agents, and a persona written later refreshes each such directory that exists.