merge(13): bring main forward — unblocks the crate's test build

The lane merged main at 0c4826f8, one commit before 0de67ca6 added
auth/auth_rationale to PortMapping's test constructors in prod_orchestrator.rs.
That left the lane unable to compile ANY test in the archipelago crate, which
is why 13-05 could not observe its 13 tests pass (window 19). Not a defect in
this phase's work — just staleness.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

# Conflicts:
#	core/archipelago/src/main.rs

core/archipelago/src/api/rpc/appgate.rs

@@ -0,0 +1,59 @@
+//! `security.app-gate-status` — what the app gate is actually enforcing.
+//!
+//! The gate rolls out per app (an app must be pinned to loopback before the
+//! gate can claim its port — see `appgate::listener`), so for a while every
+//! node is partially protected. "Partially" is only safe if it is *visible*:
+//! this is the RPC that lets the UI say which app ports are still reachable
+//! without a credential, instead of the operator having to port-scan their
+//! own node to find out.
+
+use anyhow::Result;
+
+use super::RpcHandler;
+
+impl RpcHandler {
+    pub(in crate::api::rpc) async fn handle_app_gate_status(&self) -> Result<serde_json::Value> {
+        let status = crate::appgate::listener::shared_status();
+        let status = status.read().await.clone();
+        let port_map = self.app_gate.port_map().await;
+
+        // Exemptions are reported alongside, and with their manifest
+        // rationale, because "which ports are open and why" is the actual
+        // question — a list of unprotected ports without the deliberate ones
+        // next to it invites someone to "fix" LND's gRPC port and break every
+        // remote wallet.
+        let exempt: Vec<serde_json::Value> = port_map
+            .exempt_ports()
+            .iter()
+            .map(|e| {
+                serde_json::json!({
+                    "port": e.port,
+                    "app_id": e.app_id,
+                    "protocol": e.protocol,
+                    "rationale": e.rationale,
+                })
+            })
+            .collect();
+
+        let gated: Vec<serde_json::Value> = port_map
+            .gated_ports()
+            .map(|g| {
+                serde_json::json!({
+                    "port": g.port,
+                    "app_id": g.app_id,
+                    "app_name": g.app_name,
+                })
+            })
+            .collect();
+
+        Ok(serde_json::json!({
+            // The headline. False means this node still has app ports that
+            // answer without authentication.
+            "fully_enforced": status.is_fully_enforced(),
+            "claimed": status.claimed,
+            "unprotected": status.unprotected,
+            "gated": gated,
+            "exempt": exempt,
+        }))
+    }
+}

core/archipelago/src/api/rpc/dispatcher.rs

@@ -470,6 +470,7 @@ impl RpcHandler {
             "server.set-location" => self.handle_server_set_location(params).await,
 
             // System monitoring
+            "security.app-gate-status" => self.handle_app_gate_status().await,
             "system.get-hostname" => self.handle_system_get_hostname().await,
             "system.stats" => self.handle_system_stats().await,
             "system.processes" => self.handle_system_processes().await,

core/archipelago/src/api/rpc/mod.rs

@@ -1,4 +1,5 @@
 mod analytics;
+mod appgate;
 mod ark;
 mod assistant_chat;
 mod auth;
@@ -94,6 +95,11 @@ pub struct RpcHandler {
     port_allocator: Arc<tokio::sync::Mutex<PortAllocator>>,
     pub session_store: SessionStore,
     login_rate_limiter: LoginRateLimiter,
+    /// Authentication in front of every app port. Built here rather than in
+    /// `server.rs` so it shares this handler's session store and login rate
+    /// limiter — an attacker must not get a fresh budget of password guesses
+    /// by moving from the dashboard to an app port.
+    pub(crate) app_gate: Arc<crate::appgate::AppGate>,
     endpoint_rate_limiter: EndpointRateLimiter,
     response_cache: ResponseCache,
     mesh_service: Arc<tokio::sync::RwLock<Option<crate::mesh::MeshService>>>,
@@ -158,6 +164,13 @@ impl RpcHandler {
             });
         }
 
+        let app_gate = Arc::new(crate::appgate::AppGate::new(
+            session_store.clone(),
+            auth_manager.clone(),
+            login_rate_limiter.clone(),
+            config.data_dir.clone(),
+        ));
+
         Ok(Self {
             config,
             auth_manager,
@@ -168,6 +181,7 @@ impl RpcHandler {
             port_allocator,
             session_store,
             login_rate_limiter,
+            app_gate,
             endpoint_rate_limiter,
             response_cache: ResponseCache::new(5),
             mesh_service: Arc::new(tokio::sync::RwLock::new(None)),