Addon config -> Settings. Pure: the profiles file's contents and the home
directory arrive as values.

Config keys (manifest `:addon/config`, then config.edn `:addons {"hive.compose" {..}}`):
  :compose/profiles             [Profile ..] or {id Profile}, inline
  :compose/profiles-file        EDN file of the same shape
                                (default ~/.config/hive-mcp/compose-profiles.edn)
  :compose/projects             {id Project}: compose projects whose services
                                and native profiles are addressable as targets
                                (`<project>/<target>`)
  :compose/default-ttl-minutes  idle minutes before the reaper acts (default 60)
  :compose/default-idle-action  :stop | :down | :none (default :stop)
  :compose/tick-seconds         reaper period (default 60)
  :compose/state-file           default ~/.local/state/hive-compose/state.edn
  :compose/timeout-ms           per compose call (default 60000)
  :compose/up-timeout-ms        per `up`, pulls included (default 600000)
  :compose/adopt?               adopt running stacks of configured profiles (default true)

Pure planning over the active map ({profile-id Active}): which services a
profile can release without starving another active profile, what a switch
releases, and what the reaper reaps. Plans are vectors of Release steps.

Pure reads over a Profile value and the Settings that default it.

Pure: a Program is a host process a section needs beside its containers (a
shadow-cljs watch, a JVM with an nREPL). What starts it and where its nREPL
listens are derived from the build files of its directory (`facts`), unless
the Program says so itself.

Facts are the parsed build files, keyed by file name:

  {"shadow-cljs.edn" {..} "deps.edn" {..} "bb.edn" {..} "project.clj" true}

A Clojure kind always starts with its nREPL: shadow-cljs opens its own, a
deps.edn project runs its `:nrepl` alias or a plain nrepl.cmdline, lein and
babashka run their headless REPL servers.

Pure: a target names services or native compose profiles of a configured
Project; a section is the Profile that runs exactly what it names, closed
over the compose file's depends_on.