chore(dashboard): apply the tap-target floor across the dashboard tile and onboarding chrome

Lift the GLP-1 tile range strip + tab pills, the getting-started
checklist dismiss buttons, and the settings reorder + source-ladder
arrow buttons so every interactive element clears the 44 px WCAG
2.5.5 floor.

- `glp1-tile.tsx`: range-strip radio buttons gain `inline-flex
  min-h-11 items-center justify-center px-3` so each preset sits at
  44 px; the tab pills (level / weight) lift the same way.
- `getting-started-checklist.tsx`: dismiss-all CTA drops `size="sm"`
  so it sits at the default 40 px primitive height; per-row dismiss
  `X` button wraps in `inline-flex h-11 w-11`.
- `dashboard-layout-section.tsx`: reorder up + down arrows `h-5 w-5`
  → `size-11`; column-header spacer widens to `w-11` to keep the
  layout grid aligned.
- `sources-section.tsx`: metric source ladder + device-type ladder
  up/down arrows stack vertically on `<sm` so each button keeps the
  `h-11 w-11` floor without crowding the row; sit side-by-side again
  from `sm:` up to preserve the desktop layout.

src/components/onboarding/getting-started-checklist.tsx

@@ -352,7 +352,6 @@ export function GettingStartedChecklist() {
         <Button
           type="button"
           variant="ghost"
-          size="sm"
           className="text-muted-foreground hover:text-foreground"
           onClick={() => setDismissedAll(true)}
         >
@@ -445,7 +444,7 @@ export function GettingStartedChecklist() {
                     })
                   }
                   aria-label={t("gettingStarted.dismissTooltip")}
-                  className="text-muted-foreground hover:text-foreground rounded p-1 transition-colors"
+                  className="text-muted-foreground hover:text-foreground inline-flex h-11 w-11 items-center justify-center rounded transition-colors"
                 >
                   <X className="size-4" />
                 </button>