refactor(#1202): introduce HiveEnv + AgentPaths to reduce arg repetition

hive-c0re/src/meta.rs

@@ -10,6 +10,7 @@ use anyhow::{Context, Result, bail};
 use tokio::process::Command;
 use tokio::sync::Mutex;
 
+use crate::coordinator::HiveEnv;
 use crate::lifecycle;
 
 const META_ROOT: &str = "/var/lib/hyperhive/meta";
@@ -50,26 +51,18 @@ pub fn meta_dir() -> PathBuf {
 /// rendered contents differ from disk; an unchanged `flake.nix` is a
 /// no-op.
 #[allow(dead_code, clippy::implicit_hasher)] // first caller lands in a later commit
-pub async fn sync_agents(
-    hyperhive_flake: &str,
-    nixpkgs_flake: &str,
-    nixpkgs_unstable_flake: &str,
-    dashboard_port: u16,
-    operator_pronouns: &str,
-    context_window_tokens: &std::collections::HashMap<String, u64>,
-    agents: &[AgentSpec],
-) -> Result<()> {
+pub async fn sync_agents(hive: &HiveEnv, agents: &[AgentSpec]) -> Result<()> {
     let _guard = META_LOCK.lock().await;
     let dir = meta_dir();
     std::fs::create_dir_all(&dir).with_context(|| format!("create {}", dir.display()))?;
 
     let new_flake = render_flake(
-        hyperhive_flake,
-        nixpkgs_flake,
-        nixpkgs_unstable_flake,
-        dashboard_port,
-        operator_pronouns,
-        context_window_tokens,
+        &hive.hyperhive_flake,
+        &hive.nixpkgs_flake,
+        &hive.nixpkgs_unstable_flake,
+        hive.dashboard_port,
+        &hive.operator_pronouns,
+        &hive.context_window_tokens,
         agents,
     );
     let flake_path = dir.join("flake.nix");