hive-subagent-mcp: new crate for the subagent daemon, independent of hive-bash-mcp

hive-subagent-mcp/src/main.rs

@@ -0,0 +1,52 @@
+//! `hive-subagent-daemon` binary — spawns nested claude sessions on
+//! request and serves the `start`/`continue`/`interrupt` MCP tool surface
+//! directly over streamable-http on `--http <addr>` — no stdio bridge, no
+//! separate bin claude has to respawn every turn.
+
+use std::sync::Arc;
+
+use anyhow::Result;
+use clap::Parser;
+
+#[derive(Parser)]
+#[command(
+    name = "hive-subagent-daemon",
+    about = "claude-subagent runner + MCP daemon"
+)]
+struct Cli {
+    /// Serve the MCP tools over streamable-http on this address (e.g.
+    /// `127.0.0.1:8793`). Bind loopback only.
+    #[arg(long)]
+    http: std::net::SocketAddr,
+}
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    tracing_subscriber::fmt()
+        .with_env_filter(
+            tracing_subscriber::EnvFilter::try_from_env("RUST_LOG")
+                .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")),
+        )
+        // This is a systemd-managed daemon — stdout always goes to journald,
+        // never a human terminal, and journald doesn't strip ANSI escapes:
+        // they land in victorialogs as raw byte-array spam otherwise.
+        .with_ansi(false)
+        .init();
+
+    let cli = Cli::parse();
+    let todo_socket = hive_subagent_mcp::paths::agent_socket();
+
+    tracing::info!(
+        http = %cli.http,
+        todo = %todo_socket.display(),
+        "hive-subagent-daemon starting"
+    );
+
+    let state = Arc::new(hive_subagent_mcp::session::State::new(todo_socket));
+
+    // Serve the MCP tools over streamable-http forever. No background poll
+    // loop to start — unlike the bash daemon's task-file queue, `start`/
+    // `continue` spawn their subagent's background turn directly from the
+    // tool call itself, nothing to scan for.
+    hive_subagent_mcp::mcp::serve_http(cli.http, state).await
+}