Images: use the shared pill toggle for Create/Train and pad the panels

- Create/Train was the only segmented control on its own Tabs styling. It now
  uses PillTabs, the same control as the model picker and Hub toggles, pinned to
  the header row's 34px. PillTabs takes an icon per tab, so the inline-span
  workaround for TabsTrigger goes away.
- pt-3 on both the Create and Train panels, which sat flush against the model
  selector row.

studio/frontend/src/features/images/images-page.tsx

@@ -39,11 +39,11 @@ import {
 import { Slider } from "@/components/ui/slider";
 import { Spinner } from "@/components/ui/spinner";
 import { Switch } from "@/components/ui/switch";
-import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { Textarea } from "@/components/ui/textarea";
 import { InfoHint } from "@/components/ui/info-hint";
 import { ModelSelector } from "@/features/model-picker/components/model-selector";
 import { IMAGE_GEN_TASKS } from "@/features/model-picker/components/model-selector/pickers";
+import { PillTabs } from "@/features/model-picker/components/model-selector/pill-tabs";
 import {
   IMAGE_CATALOG,
   catalogToModelOptions,
@@ -2226,30 +2226,36 @@ export function ImagesPage({ active = true }: { active?: boolean }) {
             open={active && selectorOpen}
             onOpenChange={(o) => setSelectorOpen(active && o)}
           />
-          {/* Create | Train page-mode switch, on the left next to the model selector
-              (the selector itself stays leftmost: its position is shared with Chat's).
-              Create is the generation workspace; Train is the LoRA training workspace. */}
-          <Tabs value={pageMode} onValueChange={(v) => setPageMode(v as "create" | "train")}>
-            <TabsList className="h-[34px]">
-              {/* Same icons as the sidebar's New Chat / Train entries, so the
-                  two workspaces read as the same actions everywhere. */}
-              {/* TabsTrigger renders children inside a plain inline span (and preflight
-                  makes svg display:block), so the icon and label need their own flex
-                  row to stay on one line. */}
-              <TabsTrigger value="create" className="w-[84px]">
-                <span className="flex items-center gap-1.5">
+          {/* Create | Train page-mode switch, next to the model selector (which stays
+              leftmost: its position is shared with Chat's). PillTabs is the app's
+              segmented control, so this matches the picker and Hub toggles. Icons match
+              the sidebar's New chat / Train rows. Height pinned to the row's 34px. */}
+          <PillTabs
+            ariaLabel="Page mode"
+            value={pageMode}
+            onValueChange={(v) => setPageMode(v as "create" | "train")}
+            fit={true}
+            className="h-[34px] [&>button]:h-[34px]"
+            tabs={[
+              {
+                value: "create",
+                label: "Create",
+                icon: (
                   <HugeiconsIcon icon={PencilEdit02Icon} className="size-3.5" />
-                  Create
-                </span>
-              </TabsTrigger>
-              <TabsTrigger value="train" className="w-[84px]">
-                <span className="flex items-center gap-1.5">
-                  <HugeiconsIcon icon={TestTubeOutlineIcon} className="size-3.5" />
-                  Train
-                </span>
-              </TabsTrigger>
-            </TabsList>
-          </Tabs>
+                ),
+              },
+              {
+                value: "train",
+                label: "Train",
+                icon: (
+                  <HugeiconsIcon
+                    icon={TestTubeOutlineIcon}
+                    className="size-3.5"
+                  />
+                ),
+              },
+            ]}
+          />
         </div>
         <div className="flex items-center gap-2">
           {/* Single fixed toggle for the right-docked Advanced panel (mirrors Chat's settings
@@ -2290,8 +2296,9 @@ export function ImagesPage({ active = true }: { active?: boolean }) {
         />
       ) : (
       /* ── Controls rail + preview canvas. Padding mirrors the other tabs
-          (Export, Data Recipes): px-5 / sm:px-9, with a roomy bottom. ── */
-      <div className="flex min-h-0 min-w-0 flex-1 gap-4 overflow-hidden px-5 pb-8 sm:px-9">
+          (Export, Data Recipes): px-5 / sm:px-9, with a roomy bottom. pt-3 keeps the
+          cards off the model selector row. ── */
+      <div className="flex min-h-0 min-w-0 flex-1 gap-4 overflow-hidden px-5 pb-8 pt-3 sm:px-9">
         {/* The controls rail. Plain card (the gray surface) with no header —
             the prompt + Generate button make the panel self-explanatory. */}
         <div className="bg-card corner-squircle flex w-[340px] shrink-0 flex-col gap-4 overflow-y-auto rounded-3xl p-5 ring-1 ring-foreground/10">

studio/frontend/src/features/images/train/diffusion-train-panel.tsx

@@ -990,7 +990,7 @@ export function DiffusionTrainPanel({
   );
 
   return (
-    <div className="flex min-h-0 min-w-0 flex-1 gap-4 overflow-hidden px-5 pb-8 sm:px-9">
+    <div className="flex min-h-0 min-w-0 flex-1 gap-4 overflow-hidden px-5 pb-8 pt-3 sm:px-9">
       {/* Left: configure */}
       <div className="bg-card corner-squircle flex w-[380px] min-w-0 shrink-0 flex-col gap-4 overflow-y-auto overflow-x-hidden rounded-3xl p-5 ring-1 ring-foreground/10">
         <div>