feat(design): the field family, the dropdown trigger, native controls, the no-raw-input lint rule (E28 S3c)

- ui/Input, Textarea, InnerInput + fieldClass (A4): the >= 3:1 edge, a 2px accent
  focus edge, the danger edge for invalid, md/sm/xs/heading rungs, 1rem and 44 on touch
- ui/SelectTrigger (A5): SortControl, FilterSelect, the view switcher and the date
  filter on one trigger, a pill in a toolbar, r8 in a form
- ui/NativeControls (A6): Checkbox, CheckRow, Slider, ColorInput
- every raw input swept (~100 sites); inputCls retired; local/input-primitive
- useReturnFocus: an in-place editor hands the focus back to its trigger on
  Enter/Escape (the playlist and Plex title renames, the priority number);
  the Plex playlist rename gains Escape and an accessible name
- back to top: a round 48 FAB (owner decision); DESIGN.md A2 and the log

frontend/src/components/PersonalViewsModal.tsx

@@ -24,6 +24,7 @@ import { useSortableA11y, useSortableItem } from "./ui/sortableA11y";
 import { DragHandle } from "./ui/DragHandle";
 import { Pressable } from "./ui/Pressable";
 import { DismissibleChip } from "./ui/Chip";
+import { Input } from "./ui/Input";
 
 // Master–detail manager for saved ("personal") views: the left column lists the views (drag to
 // reorder) plus a "save the current filters" input; the right column shows the selected view's name
@@ -201,12 +202,12 @@ export default function PersonalViewsModal() {
             </DndContext>
           </div>
           <div className="mt-2 flex items-center gap-1.5 border-t border-border/60 pt-2">
-            <input
+            <Input
+              className="flex-1"
               value={createName}
               onChange={(e) => setCreateName(e.target.value)}
               onKeyDown={(e) => e.key === "Enter" && onCreate()}
               placeholder={t("views.namePlaceholder")}
-              className="min-w-0 flex-1 rounded-lg border border-border bg-surface px-2 py-1.5 text-sm focus:border-accent focus:outline-hidden focus:ring-2 focus:ring-accent/30"
             />
             <IconButton
               label={t("views.save")}
@@ -224,12 +225,12 @@ export default function PersonalViewsModal() {
         {selected ? (
           <div className="flex flex-col gap-3">
             <div className="flex items-center gap-1.5">
-              <input
+              <Input
+                className="flex-1 font-medium"
                 value={nameDraft}
                 onChange={(e) => setNameDraft(e.target.value)}
                 onKeyDown={(e) => e.key === "Enter" && void onRename()}
                 onBlur={() => void onRename()}
-                className="min-w-0 flex-1 rounded-lg border border-border bg-surface px-3 py-2 text-sm font-medium focus:border-accent focus:outline-hidden focus:ring-2 focus:ring-accent/30"
               />
               <IconButton
                 variant="outline"