Remove the one-time env-to-config migration from the settings

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/components/Settings.tsx

@@ -1014,56 +1014,6 @@ function Permissions({ cfg, reload }: { cfg: ConfigResponse; reload: () => void
 
 // --- raw ----------------------------------------------------------------------
 
-/** ${VAR} references left in the config: move their values from the environment into it. */
-function EnvRefs({ onDone }: { onDone: () => void }) {
-  const t = useT();
-  const { data, reload } = useFetch<{ set: string[]; unset: string[] }>("/config/inline-env");
-  const [busy, setBusy] = useState(false);
-  if (!data || (data.set.length === 0 && data.unset.length === 0)) return null;
-  const apply = async () => {
-    if (!(await confirmDialog({ title: t("settings.envTitle"), message: t("settings.envConfirm", { names: data.set.join(", ") }), confirmLabel: t("settings.envApply") }))) return;
-    setBusy(true);
-    try {
-      const r = await post<{ set: string[] }>("/config/inline-env");
-      toast(t("settings.envDone", { n: r.set.length }), "success");
-      reload();
-      onDone();
-    } catch (e: any) {
-      toast(e.message);
-    } finally {
-      setBusy(false);
-    }
-  };
-  return (
-    <div className="panel" style={{ marginBottom: 12 }}>
-      <h3>
-        <Icon name="file-text" /> {t("settings.envTitle")}
-      </h3>
-      <div className="hint" style={{ marginBottom: 8 }}>
-        {t("settings.envHint")}
-      </div>
-      {data.set.length > 0 && (
-        <div className="row" style={{ gap: 8, flexWrap: "wrap", alignItems: "center" }}>
-          {data.set.map((n) => (
-            <span key={n} className="chip mono">
-              {n}
-            </span>
-          ))}
-          <span className="spacer" />
-          <button className="primary small" onClick={apply} disabled={busy}>
-            {t("settings.envApply")}
-          </button>
-        </div>
-      )}
-      {data.unset.length > 0 && (
-        <div className="hint" style={{ marginTop: 8 }}>
-          {t("settings.envUnset")} <span className="mono">{data.unset.join(", ")}</span>
-        </div>
-      )}
-    </div>
-  );
-}
-
 function Raw({ reload }: { reload: () => void }) {
   const t = useT();
   const [text, setText] = useState<string>();
@@ -1074,7 +1024,6 @@ function Raw({ reload }: { reload: () => void }) {
   if (text === undefined) return <div className="empty">{t("common.loading")}</div>;
   return (
     <>
-      <EnvRefs onDone={() => get<{ text: string }>("/config/raw").then((r) => setText(r.text))} />
       <div className="notice">{t("settings.rawHint")}</div>
       <textarea className="raw-editor" spellCheck={false} value={text} onChange={(e) => setText(e.target.value)} />
       {view}