fix(conductor): fall back when dashboard mission api is unavailable (#317)

src/routes/api/conductor-spawn.ts

@@ -134,8 +134,15 @@ export const Route = createFileRoute('/api/conductor-spawn')({
         if (!missionId) return json({ ok: false, error: 'missionId required' }, { status: 400 })
 
         const capabilities = await ensureGatewayProbed()
-        if (!capabilities.dashboard.available) {
-          return json({ ok: false, error: 'Hermes dashboard API is unavailable' }, { status: 503 })
+        if (!capabilities.conductor) {
+          return json(
+            {
+              ok: false,
+              error:
+                'Conductor dashboard mode is unavailable on this Hermes Agent build. Update Hermes Workspace to use portable mode for mission execution, or run a backend that exposes /api/conductor/missions.',
+            },
+            { status: 501 },
+          )
         }
 
         const res = await dashboardFetch(`/api/conductor/missions/${encodeURIComponent(missionId)}?lines=${lines}`)
@@ -177,7 +184,7 @@ export const Route = createFileRoute('/api/conductor-spawn')({
           const missionName = `conductor-${Date.now()}`
           const capabilities = await ensureGatewayProbed()
 
-          if (!capabilities.dashboard.available) {
+          if (!capabilities.conductor) {
             return json({
               ok: true,
               mode: 'portable',