docs: name the swarm display name by its new path

Two sites spelled it as a brace group, services.hyperhive.{hiveName,
swarmName}, which no anchored rewrite can handle correctly now that only
one of the two moves; both are written out separately. One of them is an
MCP tool description, so it is rendered into every agent's system prompt.

docs/conventions.md

@@ -297,7 +297,7 @@ status_text, status_set_at, hive_name, swarm_name }`:
   or when `running = false` (see above).
 - `hive_name` / `swarm_name`: display names read from
   `HYPERHIVE_HIVE_NAME` / `HYPERHIVE_SWARM_NAME` env (sourced from
-  `services.hyperhive.hiveName` / `services.hyperhive.swarmName`).
+  `services.hyperhive.hiveName` / `services.hyperhive.swarm.name`).
   Both `None` when the options aren't configured.
 
 ### Timestamps on the wire

docs/observability.md

@@ -121,7 +121,7 @@ Every agent's export includes these resource attributes automatically:
 | `service.name` | `hyperhive-agent` (constant) |
 | `agent` | agent logical name (e.g. `iris`) |
 | `hive` | hive display name (`services.hyperhive.hiveName`) |
-| `swarm` | swarm display name (`services.hyperhive.swarmName`, if set) |
+| `swarm` | swarm display name (`services.hyperhive.swarm.name`, if set) |
 
 Additional labels can be appended via `extraResourceAttributes` (see option
 reference above); custom per-data-point labels can be passed with

docs/swarm.md

@@ -20,17 +20,19 @@ the additional config needed when the swarm spans multiple hosts.
 ```nix
 services.hyperhive = {
   domain   = "pr1ma.example.com";   # machine-addressable DNS domain
-  hiveName  = "pr1ma";              # human display name (optional)
-  swarmName = "constellat1on";      # shared swarm display name (optional)
+  hiveName = "pr1ma";               # human display name (optional)
+  swarm.name = "constellat1on";     # shared swarm display name (optional)
 };
 ```
 
 `domain` is required when matrix federation is on (`matrix.enable`);
 it drives `HYPERHIVE_HIVE_DOMAIN` in every container so agents can
 form qualified labels (`iris@pr1ma.example.com`). `hiveName` and
-`swarmName` are purely display — they surface in the dashboard chrome
+`swarm.name` are purely display — they surface in the dashboard chrome
 header and per-agent system prompts. Federated hives at different
-domains can share a `swarmName`.
+domains can share a `swarm.name`; that it sits under `swarm` and
+`hiveName` does not is the whole distinction — one names this hive, the
+other names the group it belongs to.
 
 See `docs/conventions.md` § Hive identity for the env-var chain
 and `qualify()` / `qualified_label()` semantics.

hive-agent-mcp/src/mcp/mod.rs

@@ -437,8 +437,9 @@ impl AgentServer {
         `status_set_at` are stale pre-stop values and should not be treated as live), \
         and the target's self-reported `status` text (set via `set_status`) plus how \
         long ago it was set. Also returns the hive + swarm display names (`hive_name`, \
-        `swarm_name`) when the operator has configured `services.hyperhive.{hiveName, \
-        swarmName}`; both lines omitted when unset. Pass `name` to query a peer (e.g. \
+        `swarm_name`) when the operator has configured \
+        `services.hyperhive.hiveName` / `services.hyperhive.swarm.name`; both lines \
+        omitted when unset. Pass `name` to query a peer (e.g. \
         check whether iris is idle before pinging them); omit `name` to get your own \
         identity stamp — handy for state files / commit messages / cross-agent \
         attribution that won't drift across renames or session-continue boundaries \

hive-agent/src/identity.rs

@@ -42,7 +42,7 @@ pub fn hive_name() -> Option<String> {
 /// Human display name of the wider swarm this hive belongs to (e.g.
 /// `constellat1on`). Federated hives at different DNS domains can
 /// share a swarm name. Returns None when the host-side
-/// `services.hyperhive.swarmName` option is unset.
+/// `services.hyperhive.swarm.name` option is unset.
 #[must_use]
 pub fn swarm_name() -> Option<String> {
     non_empty_env("HYPERHIVE_SWARM_NAME")

hive-c0re/src/container_view.rs

@@ -268,7 +268,9 @@ fn read_active_model(name: &hive_types::Ident) -> Option<String> {
 
 /// Host-side hive + swarm display names, read from the c0re service's
 /// own process env. The `hive-c0re.nix` module sets these from
-/// `services.hyperhive.{hiveName, swarmName}`. The agent-side
+/// `services.hyperhive.hiveName` + `services.hyperhive.swarm.name`
+/// (the hive names itself; the swarm it joins is named one level out).
+/// The agent-side
 /// `hive-agent::identity::{hive_name, swarm_name}` accessors read the
 /// same env vars after they're forwarded into each sub-agent's
 /// harness service environment by `meta::render_flake`; surfacing

hive-c0re/src/dashboard/state_snapshot.rs

@@ -117,7 +117,7 @@ pub(super) struct StateSnapshot {
     hive_name: Option<String>,
     /// Human name of the wider swarm this hive belongs to (e.g.
     /// `"constellat1on"`). Sourced from `HYPERHIVE_SWARM_NAME` env
-    /// var, set from `services.hyperhive.swarmName`. `None` when
+    /// var, set from `services.hyperhive.swarm.name`. `None` when
     /// unset — chrome omits the swarm segment of the breadcrumb.
     swarm_name: Option<String>,
     /// Peer hives in the same swarm. Parsed from `HYPERHIVE_PEERS`

nix/agent-modules/claude-settings.nix

@@ -243,7 +243,7 @@ in
     description = ''
       Human-readable swarm name, rendered per-agent by
       `meta.rs::render_flake` from the host's
-      `services.hyperhive.swarmName`. Same build-time/runtime split as
+      `services.hyperhive.swarm.name`. Same build-time/runtime split as
       `hyperhive.hiveName`.
 
       `null` means the hive is not part of a named swarm.

nix/host-modules/hive-c0re/environment.nix

@@ -56,8 +56,8 @@ in
 // lib.optionalAttrs (config.services.hyperhive.hiveName != null) {
   HYPERHIVE_HIVE_NAME = config.services.hyperhive.hiveName;
 }
-// lib.optionalAttrs (config.services.hyperhive.swarmName != null) {
-  HYPERHIVE_SWARM_NAME = config.services.hyperhive.swarmName;
+// lib.optionalAttrs (config.services.hyperhive.swarm.name != null) {
+  HYPERHIVE_SWARM_NAME = config.services.hyperhive.swarm.name;
 }
 // lib.optionalAttrs (!config.services.hyperhive.github.enable) {
   # GitHub integration is on by default; only signal the OFF override to

nix/host-modules/hyperhive.nix

@@ -7,6 +7,16 @@
   ...
 }:
 {
+  # The swarm's display name moved under `swarm` when the swarm-global
+  # settings were consolidated; the hive's own name and domain stayed put,
+  # because they describe this hive rather than the swarm it joins.
+  imports = [
+    (lib.mkRenamedOptionModule
+      [ "services" "hyperhive" "swarmName" ]
+      [ "services" "hyperhive" "swarm" "name" ]
+    )
+  ];
+
   # Top-level hyperhive enable flag. When true, automatically enables
   # hive-c0re and the on-by-default hyperhive subsystems.
   options.services.hyperhive.enable = lib.mkEnableOption "hyperhive — the agent swarm coordinator";
@@ -39,11 +49,12 @@
     '';
   };
 
-  # Human display names for hive + swarm. Distinct from the DNS
-  # domain above (machine-readable) — see
-  # docs/conventions.md::Hive identity for the
-  # domain-vs-name-vs-swarm distinction + the env-var
-  # propagation chain.
+  # Human display name for this hive. Distinct from the DNS domain
+  # above (machine-readable) — see docs/conventions.md::Hive identity
+  # for the domain-vs-name-vs-swarm distinction + the env-var
+  # propagation chain. The swarm's display name is
+  # `services.hyperhive.swarm.name`, one level out: this hive is named
+  # here, the swarm it belongs to is named there.
   options.services.hyperhive.hiveName = lib.mkOption {
     type = lib.types.nullOr lib.types.str;
     default = null;
@@ -61,7 +72,10 @@
     '';
   };
 
-  options.services.hyperhive.swarmName = lib.mkOption {
+  # The one hive-level option that describes something ABOVE the hive,
+  # which is why it sits under `swarm` with the swarm-global services
+  # rather than beside `hiveName`.
+  options.services.hyperhive.swarm.name = lib.mkOption {
     type = lib.types.nullOr lib.types.str;
     default = null;
     example = "constellat1on";