Phase 6a: per-container web UI (axum); per-agent port hashed from name

hive-ag3nt/src/bin/hive-ag3nt.rs

@@ -3,7 +3,7 @@ use std::time::Duration;
 
 use anyhow::{Result, bail};
 use clap::{Parser, Subcommand};
-use hive_ag3nt::{DEFAULT_SOCKET, client};
+use hive_ag3nt::{DEFAULT_SOCKET, DEFAULT_WEB_PORT, client, web_ui};
 use hive_sh4re::{AgentRequest, AgentResponse};
 use tokio::process::Command;
 
@@ -44,7 +44,19 @@ async fn main() -> Result<()> {
 
     let cli = Cli::parse();
     match cli.cmd {
-        Cmd::Serve { poll_ms } => serve(&cli.socket, Duration::from_millis(poll_ms)).await,
+        Cmd::Serve { poll_ms } => {
+            let port = std::env::var("HIVE_PORT")
+                .ok()
+                .and_then(|s| s.parse::<u16>().ok())
+                .unwrap_or(DEFAULT_WEB_PORT);
+            let label = std::env::var("HIVE_LABEL").unwrap_or_else(|_| "hive-ag3nt".into());
+            tokio::spawn(async move {
+                if let Err(e) = web_ui::serve(label, port).await {
+                    tracing::error!(error = ?e, "web ui failed");
+                }
+            });
+            serve(&cli.socket, Duration::from_millis(poll_ms)).await
+        }
         Cmd::Send { to, body } => {
             let resp: AgentResponse =
                 client::request(&cli.socket, &AgentRequest::Send { to, body }).await?;

hive-ag3nt/src/bin/hive-m1nd.rs

@@ -8,7 +8,7 @@ use std::time::Duration;
 
 use anyhow::{Result, bail};
 use clap::{Parser, Subcommand};
-use hive_ag3nt::{DEFAULT_SOCKET, client};
+use hive_ag3nt::{DEFAULT_SOCKET, DEFAULT_WEB_PORT, client, web_ui};
 use hive_sh4re::{ManagerRequest, ManagerResponse};
 
 #[derive(Parser)]
@@ -52,7 +52,19 @@ async fn main() -> Result<()> {
 
     let cli = Cli::parse();
     match cli.cmd {
-        Cmd::Serve { poll_ms } => serve(&cli.socket, Duration::from_millis(poll_ms)).await,
+        Cmd::Serve { poll_ms } => {
+            let port = std::env::var("HIVE_PORT")
+                .ok()
+                .and_then(|s| s.parse::<u16>().ok())
+                .unwrap_or(DEFAULT_WEB_PORT);
+            let label = std::env::var("HIVE_LABEL").unwrap_or_else(|_| "hm1nd".into());
+            tokio::spawn(async move {
+                if let Err(e) = web_ui::serve(label, port).await {
+                    tracing::error!(error = ?e, "web ui failed");
+                }
+            });
+            serve(&cli.socket, Duration::from_millis(poll_ms)).await
+        }
         Cmd::Send { to, body } => one_shot(&cli.socket, ManagerRequest::Send { to, body }).await,
         Cmd::Recv => one_shot(&cli.socket, ManagerRequest::Recv).await,
         Cmd::Spawn { name } => one_shot(&cli.socket, ManagerRequest::Spawn { name }).await,

hive-ag3nt/src/lib.rs

@@ -2,6 +2,10 @@
 //! `hive-m1nd` (manager) binaries.
 
 pub mod client;
+pub mod web_ui;
 
 /// Default socket path inside the container — bind-mounted by `hive-c0re`.
 pub const DEFAULT_SOCKET: &str = "/run/hive/mcp.sock";
+
+/// Default web UI port — used when `HIVE_PORT` env is unset.
+pub const DEFAULT_WEB_PORT: u16 = 8042;

hive-ag3nt/src/web_ui.rs

@@ -0,0 +1,40 @@
+//! Per-container HTTP UI. Phase 6 minimum — a status page on a host port.
+//! Containers share the host's network namespace (privateNetwork = false), so
+//! each instance must bind a distinct port. `HIVE_PORT` is set per agent by
+//! `hive-c0re`'s generated per-agent flake (deterministic from agent name).
+
+use std::net::SocketAddr;
+
+use anyhow::{Context, Result};
+use axum::{Router, extract::State, response::Html, routing::get};
+
+#[derive(Clone)]
+struct AppState {
+    label: String,
+}
+
+pub async fn serve(label: String, port: u16) -> Result<()> {
+    let state = AppState { label };
+    let app = Router::new().route("/", get(index)).with_state(state);
+    let addr = SocketAddr::from(([0, 0, 0, 0], port));
+    let listener = tokio::net::TcpListener::bind(addr)
+        .await
+        .with_context(|| format!("bind web UI on port {port}"))?;
+    tracing::info!(%port, "web UI listening");
+    axum::serve(listener, app).await?;
+    Ok(())
+}
+
+async fn index(State(state): State<AppState>) -> Html<String> {
+    Html(format!(
+        "<!doctype html>\n\
+         <html>\n\
+           <head><title>{label}</title></head>\n\
+           <body>\n\
+             <h1>{label}</h1>\n\
+             <p>hyperhive harness placeholder. Phase 6a: this page exists.</p>\n\
+           </body>\n\
+         </html>\n",
+        label = state.label,
+    ))
+}