remove all modals, inline editing, live layout preview, clock preview

all Dialog/AlertDialog removed from widgets, data-sources, presets,
layout-builder pages. replaced with inline card expansion for
edit/create and inline confirm bars for delete.

data source form: live clock format preview with 1s tick, timezone
validation against Intl.supportedValuesOf.

layout preview: fetches live widget data via useWidgetPreview, renders
formatted content based on display_hint kind instead of widget names.

spa/src/components/layout-preview.tsx

@@ -1,6 +1,7 @@
 import { useMemo, useRef } from "react"
 import type { LayoutNode, ThemeConfig, Widget } from "@/api/types"
 import { computeLayout } from "@/lib/layout-engine"
+import { useWidgetPreview } from "@/api/widgets"
 
 interface LayoutPreviewProps {
   layout: LayoutNode
@@ -19,6 +20,91 @@ function collectWidgetIds(node: LayoutNode): number[] {
   return (node.children ?? []).flatMap((c) => collectWidgetIds(c.node))
 }
 
+function formatPreviewData(
+  kind: string,
+  data: Record<string, unknown> | undefined,
+): string {
+  if (!data) return ""
+  const entries = Object.entries(data)
+  if (entries.length === 0) return ""
+
+  switch (kind) {
+    case "key_value":
+      return entries.map(([k, v]) => `${k}: ${v}`).join("\n")
+    case "text_block":
+      return entries.map(([, v]) => String(v ?? "")).join("\n")
+    case "icon_value":
+      return entries.map(([, v]) => String(v ?? "")).join(" ")
+    default:
+      return entries.map(([, v]) => String(v ?? "")).join("\n")
+  }
+}
+
+function WidgetCell({ wid, widget, scale, theme }: {
+  wid: number
+  widget: Widget | undefined
+  scale: number
+  theme: ThemeConfig
+}) {
+  const { data } = useWidgetPreview(wid, true)
+  const hAlign = widget?.display_hint?.h_align ?? "left"
+  const vAlign = widget?.display_hint?.v_align ?? "top"
+  const flexAlign = hAlign === "center" ? "center" : hAlign === "right" ? "flex-end" : "flex-start"
+  const flexJustify = vAlign === "middle" ? "center" : vAlign === "bottom" ? "flex-end" : "flex-start"
+  const textAlign = hAlign === "center" ? "center" as const : hAlign === "right" ? "right" as const : "left" as const
+
+  const kind = widget?.display_hint?.kind ?? "text_block"
+  const previewText = formatPreviewData(kind, data as Record<string, unknown> | undefined)
+  const hasData = previewText.length > 0
+
+  return (
+    <div
+      style={{
+        display: "flex",
+        flexDirection: "column",
+        alignItems: flexAlign,
+        justifyContent: flexJustify,
+        width: "100%",
+        height: "100%",
+      }}
+    >
+      {hasData ? (
+        <span
+          style={{
+            fontSize: 8 * scale,
+            color: colorToCSS(theme.text),
+            textAlign,
+            lineHeight: 1.3,
+            whiteSpace: "pre-wrap",
+            wordBreak: "break-word",
+          }}
+        >
+          {previewText}
+        </span>
+      ) : (
+        <>
+          <span
+            style={{
+              fontSize: 10 * scale,
+              color: colorToCSS(theme.text),
+              textAlign,
+              lineHeight: 1.2,
+              opacity: 0.5,
+            }}
+          >
+            {widget?.name ?? `#${wid}`}
+          </span>
+          {widget && (
+            <span style={{ fontSize: 7 * scale, color: colorToCSS(theme.accent), textAlign, opacity: 0.5 }}>
+              {kind}
+            </span>
+          )}
+        </>
+      )}
+    </div>
+  )
+}
+
 export function LayoutPreview({
   layout,
   screenWidth,
@@ -54,11 +140,6 @@ export function LayoutPreview({
           const box = bounds.get(wid)
           if (!box) return null
           const w = widgets.find((w) => w.id === wid)
-          const hAlign = w?.display_hint?.h_align ?? "left"
-          const vAlign = w?.display_hint?.v_align ?? "top"
-          const flexAlign = hAlign === "center" ? "center" : hAlign === "right" ? "flex-end" : "flex-start"
-          const flexJustify = vAlign === "middle" ? "center" : vAlign === "bottom" ? "flex-end" : "flex-start"
-          const textAlign = hAlign === "center" ? "center" as const : hAlign === "right" ? "right" as const : "left" as const
           return (
             <div
               key={wid}
@@ -70,35 +151,11 @@ export function LayoutPreview({
                 height: box.height * scale,
                 border: `1px solid ${colorToCSS(theme.secondary)}`,
                 boxSizing: "border-box",
-                display: "flex",
-                flexDirection: "column",
-                alignItems: flexAlign,
-                justifyContent: flexJustify,
                 overflow: "hidden",
                 padding: 2 * scale,
               }}
             >
-              <span
-                style={{
-                  fontSize: 10 * scale,
-                  color: colorToCSS(theme.text),
-                  textAlign,
-                  lineHeight: 1.2,
-                }}
-              >
-                {w?.name ?? `#${wid}`}
-              </span>
-              {w && (
-                <span
-                  style={{
-                    fontSize: 8 * scale,
-                    color: colorToCSS(theme.accent),
-                    textAlign,
-                  }}
-                >
-                  {w.display_hint.kind}
-                </span>
-              )}
+              <WidgetCell wid={wid} widget={w} scale={scale} theme={theme} />
             </div>
           )
         })}

spa/src/pages/data-sources.tsx

@@ -1,4 +1,4 @@
-import { useState } from "react"
+import { useState, useEffect } from "react"
 import {
   useDataSources,
   useCreateDataSource,
@@ -14,13 +14,6 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card"
-import {
-  Dialog,
-  DialogContent,
-  DialogHeader,
-  DialogTitle,
-  DialogFooter,
-} from "@/components/ui/dialog"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import {
@@ -30,28 +23,12 @@ import {
   SelectTrigger,
   SelectValue,
 } from "@/components/ui/select"
-import {
-  AlertDialog,
-  AlertDialogAction,
-  AlertDialogCancel,
-  AlertDialogContent,
-  AlertDialogDescription,
-  AlertDialogFooter,
-  AlertDialogHeader,
-  AlertDialogTitle,
-} from "@/components/ui/alert-dialog"
 import { Badge } from "@/components/ui/badge"
-import { Plus, Pencil, Trash2, X, Eye, EyeOff } from "lucide-react"
+import { Plus, Pencil, Trash2, X, Eye, EyeOff, ChevronUp } from "lucide-react"
 import { toast } from "sonner"
 
 const SOURCE_TYPES: SourceType[] = [
-  "weather",
-  "media",
-  "rss",
-  "http_json",
-  "webhook",
-  "clock",
-  "static_text",
+  "weather", "media", "rss", "http_json", "webhook", "clock", "static_text",
 ]
 
 const EXTERNAL_TYPES: SourceType[] = ["weather", "media", "rss", "http_json", "webhook"]
@@ -70,83 +47,158 @@ const EMPTY: DataSource = {
   config: { type: "external", url: null, api_key: null, headers: [] },
 }
 
+const VALID_TIMEZONES = new Set(Intl.supportedValuesOf("timeZone"))
+
+const STRFTIME_MAP: Record<string, (d: Date) => string> = {
+  "%H": (d) => String(d.getHours()).padStart(2, "0"),
+  "%M": (d) => String(d.getMinutes()).padStart(2, "0"),
+  "%S": (d) => String(d.getSeconds()).padStart(2, "0"),
+  "%I": (d) => String(d.getHours() % 12 || 12).padStart(2, "0"),
+  "%p": (d) => (d.getHours() >= 12 ? "PM" : "AM"),
+  "%Y": (d) => String(d.getFullYear()),
+  "%m": (d) => String(d.getMonth() + 1).padStart(2, "0"),
+  "%d": (d) => String(d.getDate()).padStart(2, "0"),
+}
+
+function formatClockPreview(fmt: string, tz: string): string {
+  try {
+    const parts = new Intl.DateTimeFormat("en-US", {
+      timeZone: tz,
+      year: "numeric", month: "2-digit", day: "2-digit",
+      hour: "2-digit", minute: "2-digit", second: "2-digit",
+      hour12: false,
+    }).formatToParts(new Date())
+
+    const get = (type: string) => parts.find((p) => p.type === type)?.value ?? ""
+    const h24 = Number(get("hour"))
+    const fakeDate = new Date(2000, 0, 1, h24, Number(get("minute")), Number(get("second")))
+
+    let result = fmt
+    for (const [token, fn] of Object.entries(STRFTIME_MAP)) {
+      if (token === "%Y") result = result.replaceAll(token, get("year"))
+      else if (token === "%m") result = result.replaceAll(token, get("month"))
+      else if (token === "%d") result = result.replaceAll(token, get("day"))
+      else result = result.replaceAll(token, fn(fakeDate))
+    }
+    return result
+  } catch {
+    return "invalid timezone"
+  }
+}
+
+function isValidSave(ds: DataSource): boolean {
+  if (!ds.name) return false
+  if (EXTERNAL_TYPES.includes(ds.source_type) && ds.source_type !== "webhook" && ds.poll_interval_secs <= 0) return false
+  if (EXTERNAL_TYPES.includes(ds.source_type) && ds.source_type !== "webhook" && ds.config.type === "external" && !ds.config.url) return false
+  return true
+}
+
 export function DataSourcesPage() {
   const { data: sources = [], isLoading } = useDataSources()
   const create = useCreateDataSource()
   const update = useUpdateDataSource()
   const del = useDeleteDataSource()
 
-  const [editing, setEditing] = useState<DataSource | null>(null)
-  const [deleting, setDeleting] = useState<number | null>(null)
+  const [editingId, setEditingId] = useState<number | null>(null)
+  const [editingData, setEditingData] = useState<DataSource | null>(null)
+  const [newSource, setNewSource] = useState<DataSource | null>(null)
+  const [confirmingDelete, setConfirmingDelete] = useState<number | null>(null)
 
   function openNew() {
-    const nextId =
-      sources.length > 0 ? Math.max(...sources.map((s) => s.id)) + 1 : 1
-    setEditing({ ...EMPTY, id: nextId })
+    const nextId = sources.length > 0 ? Math.max(...sources.map((s) => s.id)) + 1 : 1
+    setNewSource({ ...EMPTY, id: nextId })
+    setEditingId(null)
   }
 
-  function openEdit(ds: DataSource) {
-    setEditing({ ...ds })
+  function startEdit(ds: DataSource) {
+    setEditingId(ds.id)
+    setEditingData({ ...ds })
+    setNewSource(null)
   }
 
-  async function save() {
-    if (!editing) return
-    const isNew = !sources.some((s) => s.id === editing.id)
+  function cancelEdit() {
+    setEditingId(null)
+    setEditingData(null)
+    setNewSource(null)
+  }
+
+  async function saveExisting() {
+    if (!editingData) return
     try {
-      if (isNew) {
-        await create.mutateAsync(editing)
-        toast.success("Data source created")
-      } else {
-        await update.mutateAsync(editing)
-        toast.success("Data source updated")
-      }
-      setEditing(null)
+      await update.mutateAsync(editingData)
+      toast.success("Data source updated")
+      setEditingId(null)
+      setEditingData(null)
     } catch (e) {
       toast.error(String(e))
     }
   }
 
-  async function confirmDelete() {
-    if (deleting == null) return
+  async function saveNew() {
+    if (!newSource) return
     try {
-      await del.mutateAsync(deleting)
+      await create.mutateAsync(newSource)
+      toast.success("Data source created")
+      setNewSource(null)
+    } catch (e) {
+      toast.error(String(e))
+    }
+  }
+
+  async function confirmDelete(id: number) {
+    try {
+      await del.mutateAsync(id)
       toast.success("Data source deleted")
     } catch (e) {
       toast.error(String(e))
     }
-    setDeleting(null)
+    setConfirmingDelete(null)
   }
 
-  if (isLoading) return <div className="text-muted-foreground p-4">Loading…</div>
+  if (isLoading) return <div className="text-muted-foreground p-4">Loading...</div>
 
   return (
     <div className="space-y-6">
       <div className="flex items-center justify-between">
         <div>
-          <h1 className="text-2xl font-semibold tracking-tight">
-            Data Sources
-          </h1>
-          <p className="text-muted-foreground text-sm">
-            Configure external data feeds
-          </p>
+          <h1 className="text-2xl font-semibold tracking-tight">Data Sources</h1>
+          <p className="text-muted-foreground text-sm">Configure data feeds</p>
         </div>
-        <Button onClick={openNew}>
+        <Button onClick={openNew} disabled={!!newSource}>
           <Plus className="mr-2 h-4 w-4" />
           Add Source
         </Button>
       </div>
 
-      {sources.length === 0 ? (
-        <Card>
-          <CardContent className="py-12 text-center">
-            <p className="text-muted-foreground">
-              No data sources configured yet.
-            </p>
-          </CardContent>
-        </Card>
-      ) : (
-        <div className="grid gap-3">
-          {sources.map((ds) => (
+      <div className="grid gap-3">
+        {newSource && (
+          <Card className="border-primary">
+            <CardHeader className="py-3">
+              <CardTitle className="text-base">New Data Source</CardTitle>
+            </CardHeader>
+            <CardContent className="space-y-4">
+              <DataSourceForm value={newSource} onChange={setNewSource} />
+              <div className="flex gap-2 justify-end">
+                <Button variant="outline" size="sm" onClick={cancelEdit}>Cancel</Button>
+                <Button size="sm" onClick={saveNew} disabled={!isValidSave(newSource)}>Save</Button>
+              </div>
+            </CardContent>
+          </Card>
+        )}
+
+        {sources.length === 0 && !newSource && (
+          <Card>
+            <CardContent className="py-12 text-center">
+              <p className="text-muted-foreground">No data sources configured yet.</p>
+            </CardContent>
+          </Card>
+        )}
+
+        {sources.map((ds) => {
+          const isEditing = editingId === ds.id
+          const isDeleting = confirmingDelete === ds.id
+
+          return (
             <Card key={ds.id}>
               <CardHeader className="flex flex-row items-center justify-between py-3">
                 <div className="space-y-1">
@@ -155,91 +207,43 @@ export function DataSourcesPage() {
                     <Badge variant="secondary">{ds.source_type}</Badge>
                     {ds.poll_interval_secs > 0 && <span>every {ds.poll_interval_secs}s</span>}
                     {ds.config.type === "external" && ds.config.url && (
-                      <span className="text-muted-foreground max-w-xs truncate text-xs">
-                        {ds.config.url}
-                      </span>
+                      <span className="text-muted-foreground max-w-xs truncate text-xs">{ds.config.url}</span>
                     )}
                   </CardDescription>
                 </div>
                 <div className="flex gap-1">
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => openEdit(ds)}
-                  >
-                    <Pencil className="h-4 w-4" />
+                  <Button variant="ghost" size="icon" onClick={() => isEditing ? cancelEdit() : startEdit(ds)}>
+                    {isEditing ? <ChevronUp className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
                   </Button>
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => setDeleting(ds.id)}
-                  >
+                  <Button variant="ghost" size="icon" onClick={() => setConfirmingDelete(isDeleting ? null : ds.id)}>
                     <Trash2 className="h-4 w-4" />
                   </Button>
                 </div>
               </CardHeader>
+
+              {isDeleting && (
+                <CardContent className="pt-0">
+                  <div className="flex gap-2 items-center p-2 bg-destructive/10 rounded">
+                    <span className="text-sm flex-1">Delete? Widgets referencing it will lose their feed.</span>
+                    <Button size="sm" variant="destructive" onClick={() => confirmDelete(ds.id)}>Delete</Button>
+                    <Button size="sm" variant="ghost" onClick={() => setConfirmingDelete(null)}>Cancel</Button>
+                  </div>
+                </CardContent>
+              )}
+
+              {isEditing && editingData && (
+                <CardContent className="space-y-4 pt-0">
+                  <DataSourceForm value={editingData} onChange={setEditingData} />
+                  <div className="flex gap-2 justify-end">
+                    <Button variant="outline" size="sm" onClick={cancelEdit}>Cancel</Button>
+                    <Button size="sm" onClick={saveExisting} disabled={!isValidSave(editingData)}>Save</Button>
+                  </div>
+                </CardContent>
+              )}
             </Card>
-          ))}
-        </div>
-      )}
-
-      {/* Edit / Create Dialog */}
-      <Dialog open={!!editing} onOpenChange={(o) => !o && setEditing(null)}>
-        <DialogContent>
-          <DialogHeader>
-            <DialogTitle>
-              {editing && sources.some((s) => s.id === editing.id)
-                ? "Edit Data Source"
-                : "New Data Source"}
-            </DialogTitle>
-          </DialogHeader>
-          {editing && (
-            <DataSourceForm value={editing} onChange={setEditing} />
-          )}
-          <DialogFooter>
-            <Button variant="outline" onClick={() => setEditing(null)}>
-              Cancel
-            </Button>
-            <Button
-              onClick={save}
-              disabled={
-                !editing?.name ||
-                (EXTERNAL_TYPES.includes(editing.source_type) &&
-                  editing.source_type !== "webhook" &&
-                  editing.poll_interval_secs <= 0) ||
-                (EXTERNAL_TYPES.includes(editing.source_type) &&
-                  editing.source_type !== "webhook" &&
-                  editing.config.type === "external" &&
-                  !editing.config.url)
-              }
-            >
-              Save
-            </Button>
-          </DialogFooter>
-        </DialogContent>
-      </Dialog>
-
-      {/* Delete Confirmation */}
-      <AlertDialog
-        open={deleting != null}
-        onOpenChange={(o) => !o && setDeleting(null)}
-      >
-        <AlertDialogContent>
-          <AlertDialogHeader>
-            <AlertDialogTitle>Delete data source?</AlertDialogTitle>
-            <AlertDialogDescription>
-              This will permanently remove this data source. Widgets referencing
-              it will lose their feed.
-            </AlertDialogDescription>
-          </AlertDialogHeader>
-          <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
-            <AlertDialogAction onClick={confirmDelete}>
-              Delete
-            </AlertDialogAction>
-          </AlertDialogFooter>
-        </AlertDialogContent>
-      </AlertDialog>
+          )
+        })}
+      </div>
     </div>
   )
 }
@@ -251,11 +255,7 @@ function isSensitiveKey(key: string) {
 }
 
 function HeaderRow({
-  headerKey,
-  headerValue,
-  onChangeKey,
-  onChangeValue,
-  onRemove,
+  headerKey, headerValue, onChangeKey, onChangeValue, onRemove,
 }: {
   headerKey: string
   headerValue: string
@@ -268,12 +268,7 @@ function HeaderRow({
 
   return (
     <div className="flex items-center gap-2">
-      <Input
-        value={headerKey}
-        onChange={(e) => onChangeKey(e.target.value)}
-        placeholder="key"
-        className="flex-1"
-      />
+      <Input value={headerKey} onChange={(e) => onChangeKey(e.target.value)} placeholder="key" className="flex-1" />
       <div className="relative flex-1">
         <Input
           type={sensitive && !visible ? "password" : "text"}
@@ -283,17 +278,8 @@ function HeaderRow({
           className={sensitive ? "pr-9" : ""}
         />
         {sensitive && (
-          <Button
-            variant="ghost"
-            size="icon"
-            className="absolute top-0 right-0 h-full w-9"
-            onClick={() => setVisible((v) => !v)}
-          >
-            {visible ? (
-              <EyeOff className="h-3.5 w-3.5" />
-            ) : (
-              <Eye className="h-3.5 w-3.5" />
-            )}
+          <Button variant="ghost" size="icon" className="absolute top-0 right-0 h-full w-9" onClick={() => setVisible((v) => !v)}>
+            {visible ? <EyeOff className="h-3.5 w-3.5" /> : <Eye className="h-3.5 w-3.5" />}
           </Button>
         )}
       </div>
@@ -304,13 +290,28 @@ function HeaderRow({
   )
 }
 
-function DataSourceForm({
-  value,
-  onChange,
-}: {
-  value: DataSource
-  onChange: (ds: DataSource) => void
-}) {
+function ClockPreview({ format, timezone }: { format: string; timezone: string }) {
+  const [preview, setPreview] = useState("")
+
+  useEffect(() => {
+    setPreview(formatClockPreview(format, timezone))
+    const id = setInterval(() => setPreview(formatClockPreview(format, timezone)), 1000)
+    return () => clearInterval(id)
+  }, [format, timezone])
+
+  const validTz = VALID_TIMEZONES.has(timezone)
+
+  return (
+    <div className="space-y-1">
+      <p className="text-muted-foreground text-sm font-mono">{preview}</p>
+      {timezone && !validTz && (
+        <p className="text-destructive text-xs">Unknown timezone</p>
+      )}
+    </div>
+  )
+}
+
+function DataSourceForm({ value, onChange }: { value: DataSource; onChange: (ds: DataSource) => void }) {
   const set = <K extends keyof DataSource>(k: K, v: DataSource[K]) =>
     onChange({ ...value, [k]: v })
 
@@ -326,29 +327,18 @@ function DataSourceForm({
   const isStaticText = value.config.type === "static_text"
 
   return (
-    <div className="grid gap-4 py-2">
+    <div className="grid gap-4">
       <div className="grid gap-2">
         <Label>Name</Label>
-        <Input
-          value={value.name}
-          onChange={(e) => set("name", e.target.value)}
-          placeholder="e.g. weather"
-        />
+        <Input value={value.name} onChange={(e) => set("name", e.target.value)} placeholder="e.g. weather" />
       </div>
       <div className="grid gap-2">
         <Label>Source Type</Label>
-        <Select
-          value={value.source_type}
-          onValueChange={(v) => onSourceTypeChange(v as SourceType)}
-        >
-          <SelectTrigger>
-            <SelectValue />
-          </SelectTrigger>
+        <Select value={value.source_type} onValueChange={(v) => onSourceTypeChange(v as SourceType)}>
+          <SelectTrigger><SelectValue /></SelectTrigger>
           <SelectContent>
             {SOURCE_TYPES.map((t) => (
-              <SelectItem key={t} value={t}>
-                {t}
-              </SelectItem>
+              <SelectItem key={t} value={t}>{t}</SelectItem>
             ))}
           </SelectContent>
         </Select>
@@ -358,20 +348,11 @@ function DataSourceForm({
         <>
           <div className="grid gap-2">
             <Label>URL</Label>
-            <Input
-              value={value.config.url ?? ""}
-              onChange={(e) => setConfig({ url: e.target.value || null })}
-              placeholder="https://..."
-            />
+            <Input value={value.config.url ?? ""} onChange={(e) => setConfig({ url: e.target.value || null })} placeholder="https://..." />
           </div>
           <div className="grid gap-2">
             <Label>API Key</Label>
-            <Input
-              type="password"
-              value={value.config.api_key ?? ""}
-              onChange={(e) => setConfig({ api_key: e.target.value || null })}
-              placeholder="Optional"
-            />
+            <Input type="password" value={value.config.api_key ?? ""} onChange={(e) => setConfig({ api_key: e.target.value || null })} placeholder="Optional" />
           </div>
         </>
       )}
@@ -380,55 +361,33 @@ function DataSourceForm({
         <>
           <div className="grid gap-2">
             <Label>Format</Label>
-            <Input
-              value={value.config.format}
-              onChange={(e) => setConfig({ format: e.target.value })}
-              placeholder="%H:%M:%S"
-            />
+            <Input value={value.config.format} onChange={(e) => setConfig({ format: e.target.value })} placeholder="%H:%M:%S" />
           </div>
           <div className="grid gap-2">
             <Label>Timezone</Label>
-            <Input
-              value={value.config.timezone}
-              onChange={(e) => setConfig({ timezone: e.target.value })}
-              placeholder="Europe/Warsaw"
-            />
+            <Input value={value.config.timezone} onChange={(e) => setConfig({ timezone: e.target.value })} placeholder="Europe/Warsaw" />
           </div>
+          <ClockPreview format={value.config.format} timezone={value.config.timezone} />
         </>
       )}
 
       {isStaticText && (
         <div className="grid gap-2">
           <Label>Text</Label>
-          <Input
-            value={value.config.text}
-            onChange={(e) => setConfig({ text: e.target.value })}
-            placeholder="Hello world"
-          />
+          <Input value={value.config.text} onChange={(e) => setConfig({ text: e.target.value })} placeholder="Hello world" />
         </div>
       )}
 
       <div className="grid gap-2">
         <Label>Poll Interval (seconds)</Label>
-        <Input
-          type="number"
-          value={value.poll_interval_secs}
-          onChange={(e) => set("poll_interval_secs", Number(e.target.value))}
-          min={1}
-        />
+        <Input type="number" value={value.poll_interval_secs} onChange={(e) => set("poll_interval_secs", Number(e.target.value))} min={1} />
       </div>
 
       {isExternal && (
         <div className="grid gap-2">
           <div className="flex items-center justify-between">
             <Label>Headers</Label>
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={() =>
-                setConfig({ headers: [...value.config.headers, ["", ""]] })
-              }
-            >
+            <Button variant="outline" size="sm" onClick={() => setConfig({ headers: [...value.config.headers, ["", ""]] })}>
               <Plus className="mr-1 h-3 w-3" />
               Add
             </Button>
@@ -448,9 +407,7 @@ function DataSourceForm({
                 next[i] = [k, newVal]
                 setConfig({ headers: next })
               }}
-              onRemove={() =>
-                setConfig({ headers: value.config.headers.filter((_, idx) => idx !== i) })
-              }
+              onRemove={() => setConfig({ headers: value.config.headers.filter((_, idx) => idx !== i) })}
             />
           ))}
         </div>

spa/src/pages/layout-builder.tsx

@@ -18,16 +18,6 @@ import {
   SelectTrigger,
   SelectValue,
 } from "@/components/ui/select"
-import {
-  AlertDialog,
-  AlertDialogAction,
-  AlertDialogCancel,
-  AlertDialogContent,
-  AlertDialogDescription,
-  AlertDialogFooter,
-  AlertDialogHeader,
-  AlertDialogTitle,
-} from "@/components/ui/alert-dialog"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import { Badge } from "@/components/ui/badge"
@@ -287,7 +277,15 @@ export function LayoutBuilderPage() {
                 onAddContainer={(path, dir) =>
                   addChild(path, makeContainerChild(dir))
                 }
-                onRemove={() => setPendingDelete(selected)}
+                pendingDelete={pendingDelete}
+                onRequestDelete={() => setPendingDelete(selected)}
+                onConfirmDelete={() => {
+                  if (pendingDelete !== null) {
+                    removeChild(pendingDelete)
+                    setPendingDelete(null)
+                  }
+                }}
+                onCancelDelete={() => setPendingDelete(null)}
                 onUpdateSizing={(sizing) => updateSizing(selected, sizing)}
                 isRoot={selected.length === 0}
                 widgets={widgets}
@@ -296,7 +294,15 @@ export function LayoutBuilderPage() {
               <LeafProps
                 path={selected}
                 widgetId={selectedNode?.widget_id ?? 0}
-                onRemove={() => setPendingDelete(selected)}
+                pendingDelete={pendingDelete}
+                onRequestDelete={() => setPendingDelete(selected)}
+                onConfirmDelete={() => {
+                  if (pendingDelete !== null) {
+                    removeChild(pendingDelete)
+                    setPendingDelete(null)
+                  }
+                }}
+                onCancelDelete={() => setPendingDelete(null)}
                 onUpdateSizing={(sizing) => updateSizing(selected, sizing)}
                 widgets={widgets}
                 sizing={
@@ -317,39 +323,6 @@ export function LayoutBuilderPage() {
         </Card>
       </div>
 
-      <AlertDialog
-        open={pendingDelete !== null}
-        onOpenChange={(o) => !o && setPendingDelete(null)}
-      >
-        <AlertDialogContent>
-          <AlertDialogHeader>
-            <AlertDialogTitle>
-              {pendingDelete?.length === 0
-                ? "Clear entire layout?"
-                : "Remove this node?"}
-            </AlertDialogTitle>
-            <AlertDialogDescription>
-              {pendingDelete?.length === 0
-                ? "This will remove the entire layout tree. You can rebuild it afterward."
-                : "This will remove the selected node and all its children."}
-            </AlertDialogDescription>
-          </AlertDialogHeader>
-          <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
-            <AlertDialogAction
-              onClick={() => {
-                if (pendingDelete !== null) {
-                  removeChild(pendingDelete)
-                  setPendingDelete(null)
-                }
-              }}
-            >
-              {pendingDelete?.length === 0 ? "Clear" : "Remove"}
-            </AlertDialogAction>
-          </AlertDialogFooter>
-        </AlertDialogContent>
-      </AlertDialog>
-
       {showPreview && root && theme && (
         <Card>
           <CardHeader className="pb-3">
@@ -493,7 +466,10 @@ function ContainerProps({
   onUpdateProp,
   onAddWidget,
   onAddContainer,
-  onRemove,
+  pendingDelete,
+  onRequestDelete,
+  onConfirmDelete,
+  onCancelDelete,
   onUpdateSizing,
   isRoot,
   widgets,
@@ -503,7 +479,10 @@ function ContainerProps({
   onUpdateProp: (path: Path, prop: "gap" | "padding" | "direction" | "justify_content" | "align_items", value: number | string) => void
   onAddWidget: (path: Path, widgetId: number) => void
   onAddContainer: (path: Path, direction: Direction) => void
-  onRemove: () => void
+  pendingDelete: Path | null
+  onRequestDelete: () => void
+  onConfirmDelete: () => void
+  onCancelDelete: () => void
   onUpdateSizing: (sizing: LayoutChild["sizing"]) => void
   isRoot: boolean
   widgets: { id: number; name: string }[]
@@ -622,14 +601,37 @@ function ContainerProps({
           </Select>
         )}
       </div>
-      <Button
-        variant="destructive"
-        size="sm"
-        onClick={onRemove}
-      >
-        <Trash2 className="mr-1 h-3 w-3" />
-        {isRoot ? "Clear Layout" : "Remove"}
-      </Button>
+      {pendingDelete !== null &&
+      JSON.stringify(pendingDelete) === JSON.stringify(path) ? (
+        <div className="grid gap-2">
+          <p className="text-sm text-destructive">
+            {isRoot
+              ? "Clear entire layout? You can rebuild afterward."
+              : "Remove this node and all its children?"}
+          </p>
+          <div className="flex gap-2">
+            <Button
+              variant="destructive"
+              size="sm"
+              onClick={onConfirmDelete}
+            >
+              {isRoot ? "Clear" : "Remove"}
+            </Button>
+            <Button variant="outline" size="sm" onClick={onCancelDelete}>
+              Cancel
+            </Button>
+          </div>
+        </div>
+      ) : (
+        <Button
+          variant="destructive"
+          size="sm"
+          onClick={onRequestDelete}
+        >
+          <Trash2 className="mr-1 h-3 w-3" />
+          {isRoot ? "Clear Layout" : "Remove"}
+        </Button>
+      )}
     </div>
   )
 }
@@ -637,14 +639,20 @@ function ContainerProps({
 function LeafProps({
   path,
   widgetId,
-  onRemove,
+  pendingDelete,
+  onRequestDelete,
+  onConfirmDelete,
+  onCancelDelete,
   onUpdateSizing,
   widgets,
   sizing,
 }: {
   path: Path
   widgetId: number
-  onRemove: () => void
+  pendingDelete: Path | null
+  onRequestDelete: () => void
+  onConfirmDelete: () => void
+  onCancelDelete: () => void
   onUpdateSizing: (sizing: LayoutChild["sizing"]) => void
   widgets: { id: number; name: string }[]
   sizing?: LayoutChild["sizing"]
@@ -657,10 +665,31 @@ function LeafProps({
         <p className="text-sm">{w?.name ?? `#${widgetId}`}</p>
       </div>
       {sizing && <SizingEditor path={path} onUpdate={onUpdateSizing} sizing={sizing} />}
-      <Button variant="destructive" size="sm" onClick={onRemove}>
-        <Trash2 className="mr-1 h-3 w-3" />
-        Remove
-      </Button>
+      {pendingDelete !== null &&
+      JSON.stringify(pendingDelete) === JSON.stringify(path) ? (
+        <div className="grid gap-2">
+          <p className="text-sm text-destructive">
+            Remove this widget?
+          </p>
+          <div className="flex gap-2">
+            <Button
+              variant="destructive"
+              size="sm"
+              onClick={onConfirmDelete}
+            >
+              Remove
+            </Button>
+            <Button variant="outline" size="sm" onClick={onCancelDelete}>
+              Cancel
+            </Button>
+          </div>
+        </div>
+      ) : (
+        <Button variant="destructive" size="sm" onClick={onRequestDelete}>
+          <Trash2 className="mr-1 h-3 w-3" />
+          Remove
+        </Button>
+      )}
     </div>
   )
 }

spa/src/pages/presets.tsx

@@ -15,26 +15,8 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card"
-import {
-  Dialog,
-  DialogContent,
-  DialogHeader,
-  DialogTitle,
-  DialogFooter,
-} from "@/components/ui/dialog"
-import {
-  AlertDialog,
-  AlertDialogAction,
-  AlertDialogCancel,
-  AlertDialogContent,
-  AlertDialogDescription,
-  AlertDialogFooter,
-  AlertDialogHeader,
-  AlertDialogTitle,
-} from "@/components/ui/alert-dialog"
 import { Input } from "@/components/ui/input"
-import { Label } from "@/components/ui/label"
-import { Save, Upload, Trash2 } from "lucide-react"
+import { Save, Upload, Trash2, ChevronUp } from "lucide-react"
 import { toast } from "sonner"
 
 export function PresetsPage() {
@@ -45,22 +27,22 @@ export function PresetsPage() {
   const loadPreset = useLoadPreset()
 
   const [saving, setSaving] = useState(false)
-  const [saveName, setSaveName] = useState("")
-  const [deleting, setDeleting] = useState<number | null>(null)
+  const [presetName, setPresetName] = useState("")
+  const [confirmingDelete, setConfirmingDelete] = useState<number | null>(null)
 
   async function saveAsPreset() {
-    if (!layout || !saveName) return
+    if (!layout || !presetName) return
     const nextId =
       presets.length > 0 ? Math.max(...presets.map((p) => p.id)) + 1 : 1
     try {
       await createPreset.mutateAsync({
         id: nextId,
-        name: saveName,
+        name: presetName,
         layout,
       })
       toast.success("Preset saved")
       setSaving(false)
-      setSaveName("")
+      setPresetName("")
     } catch (e) {
       toast.error(String(e))
     }
@@ -75,15 +57,14 @@ export function PresetsPage() {
     }
   }
 
-  async function confirmDelete() {
-    if (deleting == null) return
+  async function confirmDelete(id: number) {
     try {
-      await deletePreset.mutateAsync(deleting)
+      await deletePreset.mutateAsync(id)
       toast.success("Preset deleted")
     } catch (e) {
       toast.error(String(e))
     }
-    setDeleting(null)
+    setConfirmingDelete(null)
   }
 
   function nodeCount(node: Preset["layout"]["root"]): number {
@@ -104,12 +85,50 @@ export function PresetsPage() {
             Save and restore layout configurations
           </p>
         </div>
-        <Button onClick={() => setSaving(true)} disabled={!layout}>
-          <Save className="mr-2 h-4 w-4" />
-          Save Current Layout
+        <Button
+          onClick={() => setSaving((v) => !v)}
+          disabled={!layout}
+          variant={saving ? "secondary" : "default"}
+        >
+          {saving ? (
+            <ChevronUp className="mr-2 h-4 w-4" />
+          ) : (
+            <Save className="mr-2 h-4 w-4" />
+          )}
+          {saving ? "Close" : "Save Current Layout"}
         </Button>
       </div>
 
+      {saving && (
+        <Card>
+          <CardHeader className="py-3">
+            <CardTitle className="text-base">Save Current Layout as Preset</CardTitle>
+          </CardHeader>
+          <CardContent className="flex items-center gap-2 pb-3">
+            <Input
+              value={presetName}
+              onChange={(e) => setPresetName(e.target.value)}
+              placeholder="e.g. dashboard"
+              onKeyDown={(e) => e.key === "Enter" && saveAsPreset()}
+              autoFocus
+            />
+            <Button onClick={saveAsPreset} disabled={!presetName} size="sm">
+              Save
+            </Button>
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() => {
+                setSaving(false)
+                setPresetName("")
+              }}
+            >
+              Cancel
+            </Button>
+          </CardContent>
+        </Card>
+      )}
+
       {presets.length === 0 ? (
         <Card>
           <CardContent className="py-12 text-center">
@@ -128,69 +147,47 @@ export function PresetsPage() {
                   </CardDescription>
                 </div>
                 <div className="flex gap-1">
-                  <Button variant="outline" size="sm" onClick={() => load(p.id)}>
-                    <Upload className="mr-1 h-3 w-3" />
-                    Load
-                  </Button>
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => setDeleting(p.id)}
-                  >
-                    <Trash2 className="h-4 w-4" />
-                  </Button>
+                  {confirmingDelete === p.id ? (
+                    <>
+                      <span className="text-sm text-muted-foreground self-center mr-1">
+                        Delete?
+                      </span>
+                      <Button
+                        variant="destructive"
+                        size="sm"
+                        onClick={() => confirmDelete(p.id)}
+                      >
+                        Delete
+                      </Button>
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        onClick={() => setConfirmingDelete(null)}
+                      >
+                        Cancel
+                      </Button>
+                    </>
+                  ) : (
+                    <>
+                      <Button variant="outline" size="sm" onClick={() => load(p.id)}>
+                        <Upload className="mr-1 h-3 w-3" />
+                        Load
+                      </Button>
+                      <Button
+                        variant="ghost"
+                        size="icon"
+                        onClick={() => setConfirmingDelete(p.id)}
+                      >
+                        <Trash2 className="h-4 w-4" />
+                      </Button>
+                    </>
+                  )}
                 </div>
               </CardHeader>
             </Card>
           ))}
         </div>
       )}
-
-      <Dialog open={saving} onOpenChange={(o) => !o && setSaving(false)}>
-        <DialogContent>
-          <DialogHeader>
-            <DialogTitle>Save Current Layout as Preset</DialogTitle>
-          </DialogHeader>
-          <div className="grid gap-4 py-2">
-            <div className="grid gap-2">
-              <Label>Preset Name</Label>
-              <Input
-                value={saveName}
-                onChange={(e) => setSaveName(e.target.value)}
-                placeholder="e.g. dashboard"
-              />
-            </div>
-          </div>
-          <DialogFooter>
-            <Button variant="outline" onClick={() => setSaving(false)}>
-              Cancel
-            </Button>
-            <Button onClick={saveAsPreset} disabled={!saveName}>
-              Save
-            </Button>
-          </DialogFooter>
-        </DialogContent>
-      </Dialog>
-
-      <AlertDialog
-        open={deleting != null}
-        onOpenChange={(o) => !o && setDeleting(null)}
-      >
-        <AlertDialogContent>
-          <AlertDialogHeader>
-            <AlertDialogTitle>Delete preset?</AlertDialogTitle>
-            <AlertDialogDescription>
-              This will permanently remove this preset.
-            </AlertDialogDescription>
-          </AlertDialogHeader>
-          <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
-            <AlertDialogAction onClick={confirmDelete}>
-              Delete
-            </AlertDialogAction>
-          </AlertDialogFooter>
-        </AlertDialogContent>
-      </AlertDialog>
     </div>
   )
 }

spa/src/pages/widgets.tsx

@@ -16,13 +16,6 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card"
-import {
-  Dialog,
-  DialogContent,
-  DialogHeader,
-  DialogTitle,
-  DialogFooter,
-} from "@/components/ui/dialog"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import {
@@ -32,18 +25,8 @@ import {
   SelectTrigger,
   SelectValue,
 } from "@/components/ui/select"
-import {
-  AlertDialog,
-  AlertDialogAction,
-  AlertDialogCancel,
-  AlertDialogContent,
-  AlertDialogDescription,
-  AlertDialogFooter,
-  AlertDialogHeader,
-  AlertDialogTitle,
-} from "@/components/ui/alert-dialog"
 import { Badge } from "@/components/ui/badge"
-import { Plus, Pencil, Trash2, X, Eye } from "lucide-react"
+import { Plus, Pencil, Trash2, X, Eye, ChevronUp } from "lucide-react"
 import { toast } from "sonner"
 
 const DISPLAY_HINT_KINDS: DisplayHintKind[] = ["icon_value", "text_block", "key_value"]
@@ -64,52 +47,72 @@ export function WidgetsPage() {
   const update = useUpdateWidget()
   const del = useDeleteWidget()
 
-  const [editing, setEditing] = useState<Widget | null>(null)
-  const [deleting, setDeleting] = useState<number | null>(null)
-  const [previewing, setPreviewing] = useState<number | null>(null)
+  const [editingId, setEditingId] = useState<number | null>(null)
+  const [editingData, setEditingData] = useState<Widget | null>(null)
+  const [newWidget, setNewWidget] = useState<Widget | null>(null)
+  const [confirmingDelete, setConfirmingDelete] = useState<number | null>(null)
+  const [previewingId, setPreviewingId] = useState<number | null>(null)
 
   function openNew() {
     const nextId =
       widgets.length > 0 ? Math.max(...widgets.map((w) => w.id)) + 1 : 1
-    setEditing({
-      ...EMPTY,
-      id: nextId,
-      data_source_id: sources[0]?.id ?? 0,
-    })
+    setNewWidget({ ...EMPTY, id: nextId, data_source_id: sources[0]?.id ?? 0 })
+    setEditingId(null)
   }
 
-  async function save() {
-    if (!editing) return
-    const isNew = !widgets.some((w) => w.id === editing.id)
+  function startEdit(w: Widget) {
+    setEditingId(w.id)
+    setEditingData({ ...w })
+    setNewWidget(null)
+  }
+
+  function cancelEdit() {
+    setEditingId(null)
+    setEditingData(null)
+    setNewWidget(null)
+  }
+
+  async function saveExisting() {
+    if (!editingData) return
     try {
-      if (isNew) {
-        await create.mutateAsync(editing)
-        toast.success("Widget created")
-      } else {
-        await update.mutateAsync(editing)
-        toast.success("Widget updated")
-      }
-      setEditing(null)
+      await update.mutateAsync(editingData)
+      toast.success("Widget updated")
+      setEditingId(null)
+      setEditingData(null)
     } catch (e) {
       toast.error(String(e))
     }
   }
 
-  async function confirmDelete() {
-    if (deleting == null) return
+  async function saveNew() {
+    if (!newWidget) return
     try {
-      await del.mutateAsync(deleting)
+      await create.mutateAsync(newWidget)
+      toast.success("Widget created")
+      setNewWidget(null)
+    } catch (e) {
+      toast.error(String(e))
+    }
+  }
+
+  async function confirmDelete(id: number) {
+    try {
+      await del.mutateAsync(id)
       toast.success("Widget deleted")
     } catch (e) {
       toast.error(String(e))
     }
-    setDeleting(null)
+    setConfirmingDelete(null)
+  }
+
+  function togglePreview(id: number) {
+    setPreviewingId(previewingId === id ? null : id)
   }
 
   const sourceName = (id: number) =>
     sources.find((s) => s.id === id)?.name ?? `#${id}`
 
-  if (isLoading) return <div className="text-muted-foreground p-4">Loading…</div>
+  if (isLoading) return <div className="text-muted-foreground p-4">Loading...</div>
 
   return (
     <div className="space-y-6">
@@ -120,21 +123,42 @@ export function WidgetsPage() {
             Display primitives bound to data sources
           </p>
         </div>
-        <Button onClick={openNew}>
+        <Button onClick={openNew} disabled={!!newWidget}>
           <Plus className="mr-2 h-4 w-4" />
           Add Widget
         </Button>
       </div>
 
-      {widgets.length === 0 ? (
-        <Card>
-          <CardContent className="py-12 text-center">
-            <p className="text-muted-foreground">No widgets configured yet.</p>
-          </CardContent>
-        </Card>
-      ) : (
-        <div className="grid gap-3">
-          {widgets.map((w) => (
+      <div className="grid gap-3">
+        {newWidget && (
+          <Card className="border-primary">
+            <CardHeader className="py-3">
+              <CardTitle className="text-base">New Widget</CardTitle>
+            </CardHeader>
+            <CardContent className="space-y-4">
+              <WidgetForm value={newWidget} onChange={setNewWidget} sources={sources} />
+              <div className="flex gap-2 justify-end">
+                <Button variant="outline" size="sm" onClick={cancelEdit}>Cancel</Button>
+                <Button size="sm" onClick={saveNew} disabled={!newWidget.name || !newWidget.data_source_id}>Save</Button>
+              </div>
+            </CardContent>
+          </Card>
+        )}
+
+        {widgets.length === 0 && !newWidget && (
+          <Card>
+            <CardContent className="py-12 text-center">
+              <p className="text-muted-foreground">No widgets configured yet.</p>
+            </CardContent>
+          </Card>
+        )}
+
+        {widgets.map((w) => {
+          const isEditing = editingId === w.id
+          const isDeleting = confirmingDelete === w.id
+          const isPreviewing = previewingId === w.id
+
+          return (
             <Card key={w.id}>
               <CardHeader className="flex flex-row items-center justify-between py-3">
                 <div className="space-y-1">
@@ -142,143 +166,65 @@ export function WidgetsPage() {
                   <CardDescription className="flex items-center gap-2">
                     <Badge variant="secondary">{w.display_hint.kind}</Badge>
                     <span>source: {sourceName(w.data_source_id)}</span>
-                    <span>{w.mappings.length} mapping(s)</span>
+                    {w.mappings.length > 0 && <span>{w.mappings.length} mapping(s)</span>}
                   </CardDescription>
                 </div>
                 <div className="flex gap-1">
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => setPreviewing(w.id)}
-                    title="Preview current data"
-                  >
-                    <Eye className="h-4 w-4" />
+                  <Button variant="ghost" size="icon" onClick={() => togglePreview(w.id)} title="Preview data">
+                    {isPreviewing ? <ChevronUp className="h-4 w-4" /> : <Eye className="h-4 w-4" />}
                   </Button>
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => setEditing({ ...w })}
-                  >
-                    <Pencil className="h-4 w-4" />
+                  <Button variant="ghost" size="icon" onClick={() => isEditing ? cancelEdit() : startEdit(w)}>
+                    {isEditing ? <ChevronUp className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
                   </Button>
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => setDeleting(w.id)}
-                  >
+                  <Button variant="ghost" size="icon" onClick={() => setConfirmingDelete(isDeleting ? null : w.id)}>
                     <Trash2 className="h-4 w-4" />
                   </Button>
                 </div>
               </CardHeader>
+
+              {isDeleting && (
+                <CardContent className="pt-0">
+                  <div className="flex gap-2 items-center p-2 bg-destructive/10 rounded">
+                    <span className="text-sm flex-1">Delete this widget? Layout references will become dangling.</span>
+                    <Button size="sm" variant="destructive" onClick={() => confirmDelete(w.id)}>Delete</Button>
+                    <Button size="sm" variant="ghost" onClick={() => setConfirmingDelete(null)}>Cancel</Button>
+                  </div>
+                </CardContent>
+              )}
+
+              {isPreviewing && !isEditing && (
+                <CardContent className="pt-0">
+                  <WidgetPreviewInline widgetId={w.id} />
+                </CardContent>
+              )}
+
+              {isEditing && editingData && (
+                <CardContent className="space-y-4 pt-0">
+                  <WidgetForm value={editingData} onChange={setEditingData} sources={sources} />
+                  <div className="flex gap-2 justify-end">
+                    <Button variant="outline" size="sm" onClick={cancelEdit}>Cancel</Button>
+                    <Button size="sm" onClick={saveExisting} disabled={!editingData.name || !editingData.data_source_id}>Save</Button>
+                  </div>
+                </CardContent>
+              )}
             </Card>
-          ))}
-        </div>
-      )}
-
-      <Dialog open={!!editing} onOpenChange={(o) => !o && setEditing(null)}>
-        <DialogContent className="max-w-lg">
-          <DialogHeader>
-            <DialogTitle>
-              {editing && widgets.some((w) => w.id === editing.id)
-                ? "Edit Widget"
-                : "New Widget"}
-            </DialogTitle>
-          </DialogHeader>
-          {editing && (
-            <WidgetForm
-              value={editing}
-              onChange={setEditing}
-              sources={sources}
-            />
-          )}
-          <DialogFooter>
-            <Button variant="outline" onClick={() => setEditing(null)}>
-              Cancel
-            </Button>
-            <Button
-              onClick={save}
-              disabled={
-                !editing?.name ||
-                !editing.data_source_id
-              }
-            >
-              Save
-            </Button>
-          </DialogFooter>
-        </DialogContent>
-      </Dialog>
-
-      <AlertDialog
-        open={deleting != null}
-        onOpenChange={(o) => !o && setDeleting(null)}
-      >
-        <AlertDialogContent>
-          <AlertDialogHeader>
-            <AlertDialogTitle>Delete widget?</AlertDialogTitle>
-            <AlertDialogDescription>
-              This will permanently remove this widget. Layout references will
-              become dangling.
-            </AlertDialogDescription>
-          </AlertDialogHeader>
-          <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
-            <AlertDialogAction onClick={confirmDelete}>
-              Delete
-            </AlertDialogAction>
-          </AlertDialogFooter>
-        </AlertDialogContent>
-      </AlertDialog>
-
-      {previewing != null && (
-        <WidgetPreviewDialog
-          widgetId={previewing}
-          widgetName={widgets.find((w) => w.id === previewing)?.name ?? ""}
-          onClose={() => setPreviewing(null)}
-        />
-      )}
+          )
+        })}
+      </div>
     </div>
   )
 }
 
-function WidgetPreviewDialog({
-  widgetId,
-  widgetName,
-  onClose,
-}: {
-  widgetId: number
-  widgetName: string
-  onClose: () => void
-}) {
+function WidgetPreviewInline({ widgetId }: { widgetId: number }) {
   const { data, isLoading, isError } = useWidgetPreview(widgetId, true)
 
+  if (isLoading) return <p className="text-muted-foreground text-sm">Loading...</p>
+  if (isError) return <p className="text-muted-foreground text-sm">No data yet</p>
+
   return (
-    <Dialog open onOpenChange={(o) => !o && onClose()}>
-      <DialogContent>
-        <DialogHeader>
-          <DialogTitle>Preview: {widgetName}</DialogTitle>
-        </DialogHeader>
-        <div className="py-2">
-          {isLoading && (
-            <p className="text-muted-foreground text-sm">Loading…</p>
-          )}
-          {isError && (
-            <p className="text-muted-foreground text-sm">
-              No data yet — widget hasn't been polled
-            </p>
-          )}
-          {data && (
-            <pre className="bg-muted rounded-md p-3 text-xs">
-              {JSON.stringify(data, null, 2)}
-            </pre>
-          )}
-        </div>
-        <DialogFooter>
-          <Button variant="outline" onClick={onClose}>
-            Close
-          </Button>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
+    <pre className="bg-muted rounded-md p-3 text-xs">
+      {JSON.stringify(data, null, 2)}
+    </pre>
   )
 }
 
@@ -312,7 +258,7 @@ function WidgetForm({
   }
 
   return (
-    <div className="grid gap-4 py-2">
+    <div className="grid gap-4">
       <div className="grid gap-2">
         <Label>Name</Label>
         <Input
@@ -327,14 +273,10 @@ function WidgetForm({
           value={value.display_hint.kind}
           onValueChange={(v) => set("display_hint", { ...value.display_hint, kind: v as DisplayHintKind })}
         >
-          <SelectTrigger>
-            <SelectValue />
-          </SelectTrigger>
+          <SelectTrigger><SelectValue /></SelectTrigger>
           <SelectContent>
             {DISPLAY_HINT_KINDS.map((h) => (
-              <SelectItem key={h} value={h}>
-                {h}
-              </SelectItem>
+              <SelectItem key={h} value={h}>{h}</SelectItem>
             ))}
           </SelectContent>
         </Select>
@@ -346,9 +288,7 @@ function WidgetForm({
             value={value.display_hint.h_align}
             onValueChange={(v) => set("display_hint", { ...value.display_hint, h_align: v as HAlign })}
           >
-            <SelectTrigger>
-              <SelectValue />
-            </SelectTrigger>
+            <SelectTrigger><SelectValue /></SelectTrigger>
             <SelectContent>
               <SelectItem value="left">Left</SelectItem>
               <SelectItem value="center">Center</SelectItem>
@@ -362,9 +302,7 @@ function WidgetForm({
             value={value.display_hint.v_align}
             onValueChange={(v) => set("display_hint", { ...value.display_hint, v_align: v as VAlign })}
           >
-            <SelectTrigger>
-              <SelectValue />
-            </SelectTrigger>
+            <SelectTrigger><SelectValue /></SelectTrigger>
             <SelectContent>
               <SelectItem value="top">Top</SelectItem>
               <SelectItem value="middle">Middle</SelectItem>
@@ -379,14 +317,10 @@ function WidgetForm({
           value={String(value.data_source_id)}
           onValueChange={(v) => set("data_source_id", Number(v))}
         >
-          <SelectTrigger>
-            <SelectValue />
-          </SelectTrigger>
+          <SelectTrigger><SelectValue /></SelectTrigger>
           <SelectContent>
             {sources.map((s) => (
-              <SelectItem key={s.id} value={String(s.id)}>
-                {s.name}
-              </SelectItem>
+              <SelectItem key={s.id} value={String(s.id)}>{s.name}</SelectItem>
             ))}
           </SelectContent>
         </Select>
@@ -412,26 +346,18 @@ function WidgetForm({
           <div key={i} className="flex items-center gap-2">
             <Input
               value={m.source_path}
-              onChange={(e) =>
-                updateMapping(i, { ...m, source_path: e.target.value })
-              }
+              onChange={(e) => updateMapping(i, { ...m, source_path: e.target.value })}
               placeholder="$.path.to.value"
               className="flex-1"
             />
-            <span className="text-muted-foreground text-sm">→</span>
+            <span className="text-muted-foreground text-sm">&rarr;</span>
             <Input
               value={m.target_key}
-              onChange={(e) =>
-                updateMapping(i, { ...m, target_key: e.target.value })
-              }
+              onChange={(e) => updateMapping(i, { ...m, target_key: e.target.value })}
               placeholder="target_key"
               className="flex-1"
             />
-            <Button
-              variant="ghost"
-              size="icon"
-              onClick={() => removeMapping(i)}
-            >
+            <Button variant="ghost" size="icon" onClick={() => removeMapping(i)}>
               <X className="h-3 w-3" />
             </Button>
           </div>