diff --git a/app/src/components/detail/ConfigPanel.tsx b/app/src/components/detail/ConfigPanel.tsx
index 0178796..9b03526 100644
--- a/app/src/components/detail/ConfigPanel.tsx
+++ b/app/src/components/detail/ConfigPanel.tsx
@@ -1,7 +1,7 @@
 import { useState } from "react"
 import { useNavigate } from "react-router-dom"
 import { useQueryClient } from "@tanstack/react-query"
-import { Check } from "lucide-react"
+import { Check, RefreshCw } from "lucide-react"
 import { apiClient } from "@/services/api/client"
 import type { AnyDetail, ProgramDetail, ServiceDetail, JobDetail } from "@/types"
 import { ProgramFields } from "./ProgramFields"
@@ -18,12 +18,23 @@ export function ConfigPanel({ deployment, configSection, onRefetch }: ConfigPane
   const navigate = useNavigate()
   const qc = useQueryClient()
   const [message, setMessage] = useState<{ type: "ok" | "error"; text: string } | null>(null)
+  // A deployment edit only persists to castle.yaml; the unit/process still need
+  // a deploy (regenerate) + restart to actually take effect.
+  const [pendingApply, setPendingApply] = useState(false)
+  const [applying, setApplying] = useState(false)
+  const isDeployment = configSection !== "programs"
 
   const handleSave = async (compName: string, config: Record<string, unknown>) => {
     setMessage(null)
     try {
       await apiClient.put(`/config/${configSection}/${compName}`, { config })
-      setMessage({ type: "ok", text: "Saved to castle.yaml" })
+      setMessage({
+        type: "ok",
+        text: isDeployment
+          ? "Saved to castle.yaml — not live yet; apply to deploy & restart."
+          : "Saved to castle.yaml",
+      })
+      if (isDeployment) setPendingApply(true)
       onRefetch()
       qc.invalidateQueries({ queryKey: [configSection] })
     } catch (e: unknown) {
@@ -32,6 +43,32 @@ export function ConfigPanel({ deployment, configSection, onRefetch }: ConfigPane
     }
   }
 
+  const handleApply = async () => {
+    setApplying(true)
+    setMessage(null)
+    try {
+      await apiClient.post(`/deploy`, { name: deployment.id })
+      if (configSection === "services") {
+        await apiClient.post(`/services/${deployment.id}/restart`, {})
+      }
+      setPendingApply(false)
+      setMessage({ type: "ok", text: "Applied — the change is now live." })
+      qc.invalidateQueries({ queryKey: ["status"] })
+      qc.invalidateQueries({ queryKey: [configSection] })
+      onRefetch()
+    } catch (e: unknown) {
+      let msg = e instanceof Error ? e.message : String(e)
+      try {
+        msg = JSON.parse((e as Error).message).detail ?? msg
+      } catch {
+        /* keep msg */
+      }
+      setMessage({ type: "error", text: `Apply failed: ${msg}` })
+    } finally {
+      setApplying(false)
+    }
+  }
+
   const handleDelete = async (compName: string) => {
     try {
       await apiClient.delete(`/config/${configSection}/${compName}`)
@@ -45,18 +82,34 @@ export function ConfigPanel({ deployment, configSection, onRefetch }: ConfigPane
 
   return (
     <>
-      {message && (
+      {(message || pendingApply) && (
         <div
-          className={`mb-4 px-3 py-2 rounded text-sm ${
-            message.type === "ok"
-              ? "bg-green-900/30 text-green-300 border border-green-800"
-              : "bg-red-900/30 text-red-300 border border-red-800"
+          className={`mb-4 px-3 py-2 rounded text-sm flex items-center justify-between gap-3 ${
+            message?.type === "error"
+              ? "bg-red-900/30 text-red-300 border border-red-800"
+              : pendingApply
+                ? "bg-amber-900/30 text-amber-200 border border-amber-800"
+                : "bg-green-900/30 text-green-300 border border-green-800"
           }`}
         >
           <span className="flex items-center gap-1.5">
-            {message.type === "ok" && <Check size={14} />}
-            {message.text}
+            {message?.type === "ok" && !pendingApply && <Check size={14} />}
+            {message?.text}
           </span>
+          {pendingApply && (
+            <button
+              onClick={handleApply}
+              disabled={applying}
+              className="shrink-0 flex items-center gap-1.5 px-3 py-1 text-xs rounded bg-amber-700 hover:bg-amber-600 text-white transition-colors disabled:opacity-50"
+            >
+              <RefreshCw size={12} className={applying ? "animate-spin" : ""} />
+              {applying
+                ? "Applying…"
+                : configSection === "services"
+                  ? "Apply (deploy & restart)"
+                  : "Apply (deploy)"}
+            </button>
+          )}
         </div>
       )}
       <div className="bg-[var(--card)] border border-[var(--border)] rounded-lg p-5 mb-6">