fix(security): gate classifies from the catalog overlay and releases withdrawn claims

Dev-box verification of the Tor/FIPS fixes caught a pre-existing split
brain: the orchestrator publishes containers from the signed catalog's
embedded manifests (origin-wins), but the gate classified ports from the
stale disk manifests — so it externally bound nbxplorer 32838, a port
the catalog declares auth: local and pins to loopback. Reachable behind
a login, but reachable where it deliberately was not.

- build_port_map now consults the catalog overlay first, via the same
  parse/validate/image-only filter the orchestrator uses (moved to
  app_catalog::catalog_manifest_overlay so the two cannot diverge again).
- GatedPort carries . The gated set still includes undeclared
  Session-default ports for challenge/audit, but every action that
  REDIRECTS traffic — the torrc 127.0.0.2 repoint, the FIPS relay
  stand-down, the Tor-upstream bind — now keys on the declaration.
- The sweep releases held claims whose port left the gated set, so a
  catalog refresh that withdraws a port (gated → local/none) takes
  effect without a daemon restart.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

core/archipelago/src/container/app_catalog.rs

@@ -216,6 +216,46 @@ pub fn catalog_manifest_values() -> Vec<(String, serde_json::Value)> {
         .collect()
 }
 
+/// A catalog-embedded manifest as the node actually applies it: parsed,
+/// id-checked, validated, and image-only (build-source manifests defer to
+/// disk). `None` = the caller must fall back to the disk manifest.
+///
+/// Shared between the orchestrator's load overlay and the app gate's port
+/// classification so both answer "which manifest governs this app?" from the
+/// same origin. They diverged once — the orchestrator published containers
+/// from the catalog while the gate classified from stale disk manifests, and
+/// the gate externally bound a port the catalog had declared `auth: local`
+/// (nbxplorer 32838, archi-dev-box 2026-08-04).
+pub fn catalog_manifest_overlay(
+    app_id: &str,
+    value: serde_json::Value,
+) -> Option<archipelago_container::manifest::AppManifest> {
+    let m: archipelago_container::manifest::AppManifest = match serde_json::from_value(value) {
+        Ok(m) => m,
+        Err(e) => {
+            tracing::warn!(app = %app_id, error = %e,
+                "skipping unparseable catalog manifest; using disk fallback");
+            return None;
+        }
+    };
+    if m.app.id != app_id {
+        tracing::warn!(catalog_id = %app_id, manifest_id = %m.app.id,
+            "skipping catalog manifest: embedded app id mismatches catalog key");
+        return None;
+    }
+    if let Err(e) = m.validate() {
+        tracing::warn!(app = %app_id, error = %e,
+            "skipping invalid catalog manifest; using disk fallback");
+        return None;
+    }
+    if m.app.container.build.is_some() {
+        tracing::debug!(app = %app_id,
+            "catalog manifest has a build source; deferring to disk (phase 1 = image-only)");
+        return None;
+    }
+    Some(m)
+}
+
 /// The catalog's default/latest version string for an app (the top-level
 /// `version` field), if covered. Used to decide whether an install-time
 /// selection should pin (older) or track-latest (default).

core/archipelago/src/container/prod_orchestrator.rs

@@ -1183,30 +1183,7 @@ struct LoadedManifest {
 /// source (build contexts aren't registry-distributed yet — phase 1 is
 /// image-only). See `docs/registry-manifest-design.md`.
 fn catalog_manifest_to_overlay(app_id: &str, value: serde_json::Value) -> Option<AppManifest> {
-    let m: AppManifest = match serde_json::from_value(value) {
-        Ok(m) => m,
-        Err(e) => {
-            tracing::warn!(app = %app_id, error = %e,
-                "skipping unparseable catalog manifest; using disk fallback");
-            return None;
-        }
-    };
-    if m.app.id != app_id {
-        tracing::warn!(catalog_id = %app_id, manifest_id = %m.app.id,
-            "skipping catalog manifest: embedded app id mismatches catalog key");
-        return None;
-    }
-    if let Err(e) = m.validate() {
-        tracing::warn!(app = %app_id, error = %e,
-            "skipping invalid catalog manifest; using disk fallback");
-        return None;
-    }
-    if m.app.container.build.is_some() {
-        tracing::debug!(app = %app_id,
-            "catalog manifest has a build source; deferring to disk (phase 1 = image-only)");
-        return None;
-    }
-    Some(m)
+    crate::container::app_catalog::catalog_manifest_overlay(app_id, value)
 }
 
 struct OrchestratorState {