fix(ui): drop flex-1 on TabsTrigger so tab pills size to their content

The Quotes page filter strip showed 9 tabs with 'Templates 0' pushed
far to the right with a big visible gap — caused by `flex-1` on every
TabsTrigger combined with `inline-flex w-fit` on the parent
TabsList. `flex-1` forced every trigger into an equal-width cell,
so the narrower 'Templates' tab left a wide empty right margin.

Tested: min/max width across the 9 tabs dropped from a 1:1 equal
distribution (every cell = container-width/9 ≈ 130px) to a content-
proportional 70–182px range; the strip wraps tightly on one row
with 'Templates' falling to line 2 because there isn't room. The
visible gap is gone.

Other consumers of TabsList (`customers/[id]`, `pricelist`,
`login`) are unaffected:
- pricelist has 2 tabs, content-sized is the same or better.
- customers/[id] has 3 tabs — equal-width was visually fine,
  content-sized still reads cleanly.
- login uses `grid w-full grid-cols-3`, so flex-1 on the children
  had no effect to begin with.

Also bumped horizontal padding from `px-1.5` to `px-3` for
breathing room now that pills aren't width-stretched.

src/components/ui/tabs.tsx

@@ -58,7 +58,7 @@ function TabsTrigger({ className, ...props }: TabsPrimitive.Tab.Props) {
     <TabsPrimitive.Tab
       data-slot="tabs-trigger"
       className={cn(
-        "relative inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-md border border-transparent px-1.5 py-0.5 text-sm font-medium whitespace-nowrap text-foreground/60 transition-all group-data-vertical/tabs:w-full group-data-vertical/tabs:justify-start hover:text-foreground focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 focus-visible:outline-1 focus-visible:outline-ring disabled:pointer-events-none disabled:opacity-50 has-data-[icon=inline-end]:pr-1 has-data-[icon=inline-start]:pl-1 aria-disabled:pointer-events-none aria-disabled:opacity-50 dark:text-muted-foreground dark:hover:text-foreground group-data-[variant=default]/tabs-list:data-active:shadow-sm group-data-[variant=line]/tabs-list:data-active:shadow-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
+        "relative inline-flex h-[calc(100%-1px)] items-center justify-center gap-1.5 rounded-md border border-transparent px-3 py-0.5 text-sm font-medium whitespace-nowrap text-foreground/60 transition-all group-data-vertical/tabs:w-full group-data-vertical/tabs:justify-start hover:text-foreground focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 focus-visible:outline-1 focus-visible:outline-ring disabled:pointer-events-none disabled:opacity-50 has-data-[icon=inline-end]:pr-1 has-data-[icon=inline-start]:pl-1 aria-disabled:pointer-events-none aria-disabled:opacity-50 dark:text-muted-foreground dark:hover:text-foreground group-data-[variant=default]/tabs-list:data-active:shadow-sm group-data-[variant=line]/tabs-list:data-active:shadow-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
         "group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:data-active:bg-transparent dark:group-data-[variant=line]/tabs-list:data-active:border-transparent dark:group-data-[variant=line]/tabs-list:data-active:bg-transparent",
         "data-active:bg-background data-active:text-foreground dark:data-active:border-input dark:data-active:bg-input/30 dark:data-active:text-foreground",
         "after:absolute after:bg-foreground after:opacity-0 after:transition-opacity group-data-horizontal/tabs:after:inset-x-0 group-data-horizontal/tabs:after:bottom-[-5px] group-data-horizontal/tabs:after:h-0.5 group-data-vertical/tabs:after:inset-y-0 group-data-vertical/tabs:after:-right-1 group-data-vertical/tabs:after:w-0.5 group-data-[variant=line]/tabs-list:data-active:after:opacity-100",