feat(web): step export/import, sync defaults, auto outputs, default badge

web/app/workflows/[id]/page.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import Link from "next/link";
 import { useParams, useRouter } from "next/navigation";
 import { useQuery, useQueryClient } from "@tanstack/react-query";
@@ -27,6 +27,14 @@ function ShellBadge({ interpreter }: { interpreter: "bash" | "powershell" }) {
     );
 }
 
+function DefaultBadge() {
+    return (
+        <span className="rounded px-1.5 py-0.5 font-mono text-[10px] uppercase bg-surface-2 text-text-secondary">
+            default
+        </span>
+    );
+}
+
 export default function WorkflowBuilder() {
     const params = useParams<{ id: string }>();
     const id = params.id;
@@ -39,6 +47,10 @@ export default function WorkflowBuilder() {
     const [saving, setSaving] = useState(false);
     const [running, setRunning] = useState(false);
     const [error, setError] = useState<string | null>(null);
+    const [notice, setNotice] = useState<string | null>(null);
+    const [importing, setImporting] = useState(false);
+    const [syncing, setSyncing] = useState(false);
+    const fileInputRef = useRef<HTMLInputElement>(null);
     const [groupKeys, setGroupKeys] = useState<Record<string, string[]>>({});
     const [editWorkflowOpen, setEditWorkflowOpen] = useState(false);
     const [editingStep, setEditingStep] = useState<WorkflowStep | null>(null);
@@ -178,6 +190,38 @@ export default function WorkflowBuilder() {
         updateRef(selectedIdxInWf, { overrides: { ...selectedRef.overrides, secret_refs: next } });
     };
 
+    const onImportFile = async (e: React.ChangeEvent<HTMLInputElement>) => {
+        const file = e.target.files?.[0];
+        if (!file) return;
+        setImporting(true);
+        setError(null);
+        try {
+            const doc = JSON.parse(await file.text());
+            await api.importStep(doc);
+            await queryClient.invalidateQueries({ queryKey: ["steps"] });
+            setNotice("Step imported.");
+        } catch (err) {
+            setError((err as Error).message);
+        } finally {
+            setImporting(false);
+            e.target.value = "";
+        }
+    };
+
+    const onSyncDefaults = async () => {
+        setSyncing(true);
+        setError(null);
+        try {
+            const { created, updated } = await api.seedDefaults();
+            await queryClient.invalidateQueries({ queryKey: ["steps"] });
+            setNotice(`${created} created, ${updated} updated`);
+        } catch (err) {
+            setError((err as Error).message);
+        } finally {
+            setSyncing(false);
+        }
+    };
+
     const filteredLibrary = (library ?? []).filter((s) => s.name.toLowerCase().includes(search.toLowerCase()));
     const bashSteps = filteredLibrary.filter((s) => s.interpreter === "bash");
     const pwshSteps = filteredLibrary.filter((s) => s.interpreter === "powershell");
@@ -236,6 +280,9 @@ export default function WorkflowBuilder() {
             {error && (
                 <div className="border-b border-danger/30 bg-danger/10 px-4 py-2 text-sm text-danger">{error}</div>
             )}
+            {notice && (
+                <div className="border-b border-signal/30 bg-signal/10 px-4 py-2 text-sm text-signal">{notice}</div>
+            )}
 
             <div className="grid h-[calc(100vh-53px)] grid-cols-[264px_1fr_320px]">
                 {/* LEFT: library */}
@@ -253,6 +300,26 @@ export default function WorkflowBuilder() {
                             +
                         </Button>
                     </div>
+                    <div className="mb-2 flex items-center gap-2">
+                        <input
+                            ref={fileInputRef}
+                            type="file"
+                            accept="application/json"
+                            className="hidden"
+                            onChange={onImportFile}
+                        />
+                        <Button
+                            variant="ghost"
+                            size="sm"
+                            loading={importing}
+                            onClick={() => fileInputRef.current?.click()}
+                        >
+                            Import
+                        </Button>
+                        <Button variant="ghost" size="sm" loading={syncing} onClick={onSyncDefaults}>
+                            Sync defaults
+                        </Button>
+                    </div>
                     <input
                         className={`${inputClass} mb-3`}
                         placeholder="Search steps…"
@@ -542,13 +609,23 @@ function LibraryCard({ step, onAdd, onEdit }: { step: WorkflowStep; onAdd: () =>
             <div className="mb-1 flex items-center gap-2">
                 <span className="text-text-secondary">⠿</span>
                 <ShellBadge interpreter={step.interpreter} />
+                {step.source === "default" && <DefaultBadge />}
                 <span className="text-sm font-medium text-text-primary">{step.name}</span>
+                <a
+                    href={api.exportStepUrl(step.step_id)}
+                    download
+                    onClick={(e) => e.stopPropagation()}
+                    className="ml-auto hidden text-text-secondary hover:text-text-primary group-hover:block"
+                    title="Export step"
+                >
+                    ⬇
+                </a>
                 <button
                     onClick={(e) => {
                         e.stopPropagation();
                         onEdit();
                     }}
-                    className="ml-auto hidden text-text-secondary hover:text-text-primary group-hover:block"
+                    className="hidden text-text-secondary hover:text-text-primary group-hover:block"
                     title="Edit step"
                 >
                     ✎