Pure refactor of hive-meta-flake: render_flake now calls one helper per section of the flake, so the too_many_lines allow is gone. The rendered text is unchanged.
The swarm controller offers its own running rev (services.hyperhive.c0re.
hyperhiveRev) as the hyperhive pin of internal/meta and takes it only when
the forge compare API shows it descends from the committed pin; merges to
hyperhive main no longer move the pin, and the first commit pins main's head.
When a commit moves the pin, every placed agent gets a TriggerDeploy.
A deploy after a meta update no longer waits on it succeeding (after_any), so
a down builder does not hold back hives that render locally.
A new update_meta node renders internal/meta's flake.nix with
hive-meta-flake, the renderer hive-c0re uses: hyperhive pinned to its
forge main, each custom agent a hive places pinned to its agent-configs
main, all over https, and the swarm-wide values from
SWARM_CONTROLLER_META_FLAKE (set by swarm-controller.nix from
services.hyperhive.swarm.*). The swarm builder locks it, and the
controller commits flake.nix and flake.lock in one commit and gives
every hive's forge account read on the repo. A render equal to the
committed flake.nix sends no lock and commits nothing.
It runs at start, when hyperhive's main moves, before the deploy of a
merged config PR and before the first deploy of a new agent; those
deploys now wait for it. agent_web_port moves into hive-meta-flake so
both callers compute the same port; hive-c0re re-exports it.
On deploy: internal/meta appears on the forge and follows every merge.
No hive builds from it yet.
Refs #4857
HIVE_AGENT_NATS_URL now reaches each container in its hive facts, from
the host's deploy.hive-controller.queue.agentNatsUrl, instead of being
rendered into the meta flake. The agent option
services.hyperhive.agent.queue.natsUrl is removed; the harness unit
imports the queue credential whenever the token endpoint is set.
On deploy every agent rebuilds once (the rendered flake loses the
address), and the harness reads the address from the facts file
hive-priv writes before each start.
Refs #4857
hive-c0re's render_flake and the pieces it needs (AgentSpec, AgentPin,
pinned_git_url, the forwarded-var tables, canonical_inputs_in_lock) move
into a new crate with no IO. The forwarded values and the GitHub switch
are now arguments; hive-c0re passes what it read from its own unit env,
as before. Nothing changes on deploy: the rendered flake is byte-for-byte
the same, and hive-c0re's render tests pass unchanged.
Refs #4857
