Rewrite the remaining narration in files the previous commit touched:
"moved"/"sat"/"was REMOVED"/"old default" comments in swarm-bao,
swarm-otel, glue-bao-tls, nats-authelia, swarm-controller, swarm-ui,
swarm-otel-service, swarm-authelia-service, the deploy.nix rename table,
hive-ci, hive-forge/service, hive-tls, hyperhive, swarm-nats, swarm.nix
and a few module-eval fixtures, so each says where a thing is or why it
is so now.
Revert the comment edits inside shell script strings in hive-tls,
swarm-nats and the forge token mint to their previous text, so those
generated units are unchanged. The only unit still changing is
swarm-bao-pki (two comment lines in its script). Refs #3902
Rewrite comments and option descriptions under nix/ that narrate how the
code got here ("used to", "new name", "sat at the TOP", "no longer",
renamed/moved narration, attributions) to say what the code does now and
why. Comments and description strings only; no logic changes.
Files in open PR #4970's diff are left alone. Refs #3902
`swarm.otel` (what the swarm collector is to every hive: its domain,
receiver ports, producer names, client id and the audiences that client
may present) moves to nix/host-modules/swarm-otel-service.nix, together
with the `journaldUnits` removal module and the helpers its defaults
read. Everything else -- the `deploy.swarm-otel` options, the whole
`config` block including `containers.swarm-otel`, and the helpers only
they read -- stays in nix/host-modules/swarm-otel.nix, which default.nix
now imports after the new file.
The service file needs `domainBase` (for `domain`), `baoCfg` (for
`storeProducerName`) and `cfg` plus `pushAudiences` (for `audience`).
`swarmDomain` and `domainBase` move. `cfg`, `hyperhiveCfg`, `baoCfg`,
`vmCfg`, `vlCfg`, `metricsPushUrl`, `logsPushUrl` and `pushAudiences`
are read on both sides and none is an option, so each is bound in both
files; the comments on the push URLs say the two copies must agree.
`swarmCfg` was bound and never read, so neither file carries it.
A pure move: option paths, option definitions and config are unchanged.
Comments changed: the transition comment above `deploy.swarm-otel` now
names the file `swarm.otel` lives in, and the push-URL and
`pushAudiences` comments now describe the per-file readers and the
duplicate. Three otel fixtures evaluate to the same host and container
toplevel derivations, `swarm.otel.*` and `deploy.swarm-otel.*` values
before and after.
Refs #3742
