feat: clarify dashboard chart scales

DESIGN.md

@@ -132,6 +132,7 @@ The approved Persian-first baseline remains authoritative where the shipped arti
 
 | Version | Date       | Decision                                                                                                                                                                                                                                                                                                    |
 | ------- | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 0.9.0   | 2026-08-20 | Added labeled X/Y axes and Persian ticks to the payment-history chart, and made the fee-share donut fluidly fill its dedicated visual column on larger viewports.                                                                                                                                           |
 | 0.8.0   | 2026-08-20 | Increased light-theme skeleton contrast, constrained and animated chart tooltips, made default period choices explicitly applicable, hid collapsed-sidebar labels, and strengthened the separation between period type and exact-period controls.                                                           |
 | 0.7.0   | 2026-08-20 | Made period changes confirm-on-selection, moved narrow-screen filters into a bottom sheet, enlarged collapsed navigation targets, simplified focus rings, and promoted the fee-share chart into a dedicated visual column.                                                                                  |
 | 0.6.0   | 2026-08-20 | Added full-span Jalali period selection, unified transaction status/amount controls, persistent skeleton states, custom RTL dropdowns, semantic peer/retry tones, and fee-share visualization; tightened the narrow navbar and 600px KPI breakpoint.                                                        |
@@ -289,7 +290,7 @@ Scope changes immediately replace data-dependent cards, tables, detail panels, a
 
 ### Payment-History Chart
 
-The signature chart is a blue line with outlined points, a low-opacity blue area, and dashed neutral gridlines. It follows a written title and reporting-period chip, provides focusable points with spoken values, and animates its initial trace once over 900ms while reduced-motion collapses the effect. Point tooltips use a short scale/fade transition, flip above or below according to vertical room, and clamp their center so the surface never leaves the chart wrapper.
+The signature chart is a blue line with outlined points, a low-opacity blue area, dashed neutral gridlines, labeled X/Y axes, Persian date ticks, and successful-payment count ticks. It follows a written title and reporting-period chip, provides focusable points with spoken values, and animates its initial trace once over 900ms while reduced-motion collapses the effect. Point tooltips use a short scale/fade transition, flip above or below according to vertical room, and clamp their center so the surface never leaves the chart wrapper.
 
 ### Transaction Table
 

src/lib/components/FeeShareDonut.svelte

@@ -13,7 +13,7 @@
 <Card class={cn('rounded-lg shadow-xs', className)}>
   <CardContent class="flex h-full flex-col items-center justify-center gap-5 p-6 text-center sm:p-8">
     <div
-      class="relative grid size-40 shrink-0 place-items-center sm:size-48"
+      class="fee-donut-graphic relative grid shrink-0 place-items-center"
       role="img"
       aria-label={`سهم کارمزد ${formatPercent(value)}`}
     >
@@ -32,7 +32,9 @@
           class="transition-[stroke-dasharray] duration-700 motion-reduce:transition-none"
         />
       </svg>
-      <strong class="absolute text-xl font-extrabold tabular-nums">{formatPercent(value)}</strong>
+      <strong class="absolute text-xl font-extrabold tabular-nums sm:text-2xl lg:text-3xl"
+        >{formatPercent(value)}</strong
+      >
     </div>
     <div class="max-w-sm min-w-0">
       <div class="flex items-center justify-center gap-1.5">
@@ -54,3 +56,11 @@
     </div>
   </CardContent>
 </Card>
+
+<style>
+  .fee-donut-graphic {
+    width: clamp(10rem, 30vw, 20rem);
+    max-width: 100%;
+    aspect-ratio: 1;
+  }
+</style>

src/lib/components/PaymentHistoryChart.svelte

@@ -9,16 +9,27 @@
   let active = $state<number | null>(null);
 
   const width = 760;
-  const height = 250;
+  const height = 280;
-  const pad = { x: 34, y: 28 };
+  const pad = { top: 24, right: 24, bottom: 52, left: 68 };
   const max = $derived(Math.max(1, ...data.map((point) => point.bankPaidSessions)));
   const positions = $derived(
     data.map((point, index) => ({
       ...point,
-      x: pad.x + (index * (width - pad.x * 2)) / Math.max(1, data.length - 1),
+      x: pad.left + (index * (width - pad.left - pad.right)) / Math.max(1, data.length - 1),
-      y: height - pad.y - (point.bankPaidSessions / max) * (height - pad.y * 2),
+      y: height - pad.bottom - (point.bankPaidSessions / max) * (height - pad.top - pad.bottom),
     })),
   );
+  const xTickIndexes = $derived.by(() => {
+    const tickCount = Math.min(6, data.length);
+    if (tickCount <= 1) return data.length ? [0] : [];
+    return [
+      ...new Set(
+        Array.from({ length: tickCount }, (_, index) =>
+          Math.round((index * (data.length - 1)) / (tickCount - 1)),
+        ),
+      ),
+    ];
+  });
   const path = $derived(
     positions.map((point, index) => `${index ? 'L' : 'M'} ${point.x} ${point.y}`).join(' '),
   );
@@ -38,7 +49,7 @@
   }
 </script>
 
-<div class="relative min-h-[260px] w-full overflow-hidden" dir="ltr">
+<div class="relative min-h-[290px] w-full overflow-hidden" dir="ltr">
   {#if data.length === 0}
     <div class="text-muted-foreground grid h-[260px] place-items-center text-sm">
       داده‌ای برای این بازه ثبت نشده است.
@@ -46,7 +57,7 @@
   {:else}
     <svg
       viewBox={`0 0 ${width} ${height}`}
-      class="h-auto min-h-[250px] w-full overflow-visible"
+      class="h-auto min-h-[280px] w-full overflow-visible"
       role="img"
       aria-label="روند پرداخت‌های موفق"
     >
@@ -57,17 +68,64 @@
         </linearGradient>
       </defs>
       {#each [0, 1, 2, 3, 4] as row}
+        {@const y = pad.top + (row * (height - pad.top - pad.bottom)) / 4}
         <line
-          x1={pad.x}
+          x1={pad.left}
-          x2={width - pad.x}
+          x2={width - pad.right}
-          y1={pad.y + (row * (height - pad.y * 2)) / 4}
+          y1={y}
-          y2={pad.y + (row * (height - pad.y * 2)) / 4}
+          y2={y}
           stroke="var(--border)"
           stroke-dasharray="4 6"
         />
+        <text x={pad.left - 10} y={y + 4} fill="var(--muted-foreground)" font-size="10" text-anchor="end"
+          >{formatValue(Math.round(max * (1 - row / 4)))}</text
+        >
       {/each}
+      <line x1={pad.left} x2={pad.left} y1={pad.top} y2={height - pad.bottom} stroke="var(--border)" />
+      <line
+        x1={pad.left}
+        x2={width - pad.right}
+        y1={height - pad.bottom}
+        y2={height - pad.bottom}
+        stroke="var(--border)"
+      />
+      {#each xTickIndexes as tickIndex}
+        {@const tick = positions[tickIndex]}
+        <line
+          x1={tick.x}
+          x2={tick.x}
+          y1={height - pad.bottom}
+          y2={height - pad.bottom + 5}
+          stroke="var(--border)"
+        />
+        <text
+          x={tick.x}
+          y={height - pad.bottom + 18}
+          fill="var(--muted-foreground)"
+          font-size="9"
+          text-anchor="middle"
+          direction="rtl">{persianDate(tick.localDate)}</text
+        >
+      {/each}
+      <text
+        x={(pad.left + width - pad.right) / 2}
+        y={height - 5}
+        fill="var(--muted-foreground)"
+        font-size="10"
+        text-anchor="middle"
+        direction="rtl">تاریخ</text
+      >
+      <text
+        x={-((pad.top + height - pad.bottom) / 2)}
+        y="13"
+        fill="var(--muted-foreground)"
+        font-size="10"
+        text-anchor="middle"
+        transform="rotate(-90)"
+        direction="rtl">تعداد پرداخت موفق</text
+      >
       <path
-        d={`${path} L ${positions.at(-1)?.x} ${height - pad.y} L ${positions[0]?.x} ${height - pad.y} Z`}
+        d={`${path} L ${positions.at(-1)?.x} ${height - pad.bottom} L ${positions[0]?.x} ${height - pad.bottom} Z`}
         fill="url(#payment-area)"
       />
       <path