The forge now creates a human's account on their first authelia login,
so the verb has no job left. Deletes it, HostRequest::ForgeCreateUser,
its handler, provision_user_token, change_user_password and the hive's
TOKEN_SCOPES. change_user_password also passed the password as an
argument to `forgejo admin user change-password`, so it showed in the
container's process list.
ensure_user_exists and mint_token stay for the `core` bootstrap, their
one caller now. ensure_user_exists loses its password parameter: only the
deleted path set one.
Refs #3782
An agent with a hive-agent-* store identity but no forge user was
observed as NoForgeUser and dropped by plan(), so it never got a token.
plan() now keeps it, and queue_forge_token_mints inserts CreateForgeUser
ahead of MintAgentForgeToken with after_ok, the edge declare_agent_job
already uses. ensure_agent_user folds an existing user into success, so
the extra node is a no-op for agents that have one.
Refs #3782
A MintAgentForgeToken node mints a fixed-name swarm-agent token with the
admin API, keeps it when the stored value's last eight and the normalised
scopes match the forge's list, and otherwise deletes and re-creates it.
The token is stored at swarm/agents/<agent>/forge-token. Agent creation
inserts the node, and a pass at start and every five minutes inserts it
for every agent holding a store identity whose token is missing or stale.
Refs #3782
