chore: update CHANGELOG.md and bump version to 0.5.0-alpha, highlighting analytics chart improvements and new export functionality

CHANGELOG.md

@@ -4,38 +4,41 @@ All notable changes to Pulse (frontend and product) are documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and Pulse uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html) with a **0.x.y** version scheme while in initial development. The leading `0` indicates that the public API and behaviour may change until we release **1.0.0**.
 
+## [0.5.0-alpha] - 2026-02-11
+
+### Changed
+
+- **Analytics chart improvements.** Clearer labels (including what the chart measures), compare mode shows which period you're comparing against, mini trend lines on each stat, export chart as image, and a better experience on mobile.
+
 ## [0.4.0-alpha] - 2026-02-11
 
 ### Changed
 
-- **Campaigns block improvements (PULSE-53).** The Campaigns card now supports sortable columns (Source, Medium, Campaign, Visitors, Pageviews), source favicons with display names (matching Top Referrers), a Pageviews column, and em-dash (—) for empty Medium/Campaign. Loading state uses a skeleton instead of a spinner. Rows use stable keys for better React reconciliation. An Export button exports campaigns to CSV; the main dashboard Export (PDF/Excel) also includes campaigns when available.
+- **Campaigns block improvements (PULSE-53).** Sortable columns, favicons and friendly names for sources, pageviews column, and export to CSV. Full dashboard export now includes campaigns.
 
 ## [0.3.0-alpha] - 2026-02-11
 
 ### Changed
 
-- **Top Referrers favicons (PULSE-52).** The Top Referrers card now shows real site favicons (e.g. Google, ChatGPT, Instagram) when the referrer is a domain or URL. “Direct” and “Unknown” keep the globe icon; if a favicon fails to load, the previous icon is shown as fallback.
+- **Top Referrers favicons and names (PULSE-52).** Real favicons (Google, ChatGPT, etc.) and friendly names instead of raw URLs. Same referrer from different URLs is merged into one row.
-- **Referrer display names.** Referrers now show friendly names (e.g. “Google”, “Kagi”) using a heuristic from the hostname plus a small override map for famous brands (ChatGPT, LinkedIn, X, etc.). New sites get a sensible name without being added to a list.
-- **Top Referrers merged by name.** Rows that map to the same display name (e.g. `chatgpt.com` and `https://chatgpt.com/...`) are merged into one row with combined pageviews, so the same source no longer appears twice.
 
 ## [0.2.0-alpha] - 2026-02-11
 
 ### Added
 
-- **Smarter unique visitor counts.** If someone opens your site in several tabs or windows, they’re now counted as one visitor by default, so your stats better reflect real people.
+- **Smarter unique visitor counts.** Visitors opening several tabs/windows are counted as one person.
-- **Control over how visitors are counted.** You can switch back to “one visitor per tab” (more private, no lasting identifier) by adding an option to your script embed. The dashboard shows the right snippet for both options.
+- **Visitor count options.** Choose "one per tab" (more private) or "one per person" (default). Dashboard shows the right embed snippet for each.
-- **Optional expiry for the visitor ID.** You can set how long the cross-tab visitor ID is kept (e.g. 24 hours); after that it’s refreshed automatically.
 
 ## [0.1.0-alpha] - 2026-02-09
 
 ### Added
 
 - Initial changelog and release process.
-- Release documentation in `docs/releasing.md` and optional changelog check script.
 
 ---
 
-[Unreleased]: https://github.com/ciphera-net/pulse/compare/v0.4.0-alpha...HEAD
+[Unreleased]: https://github.com/ciphera-net/pulse/compare/v0.5.0-alpha...HEAD
+[0.5.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.4.0-alpha...v0.5.0-alpha
 [0.4.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.3.0-alpha...v0.4.0-alpha
 [0.3.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.2.0-alpha...v0.3.0-alpha
 [0.2.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.1.0-alpha...v0.2.0-alpha

components/dashboard/Chart.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useState, useMemo } from 'react'
+import { useState, useMemo, useRef, useCallback } from 'react'
 import { useTheme } from '@ciphera-net/ui'
 import {
   AreaChart,
@@ -11,10 +11,11 @@ import {
   Tooltip,
   ResponsiveContainer,
   ReferenceLine,
+  Label,
 } from 'recharts'
 import type { TooltipProps } from 'recharts'
 import { formatNumber, formatDuration } from '@/lib/utils/format'
-import { ArrowUpRightIcon, ArrowDownRightIcon, BarChartIcon, Select } from '@ciphera-net/ui'
+import { ArrowUpRightIcon, ArrowDownRightIcon, BarChartIcon, Select, Button, DownloadIcon } from '@ciphera-net/ui'
 import { Checkbox } from '@ciphera-net/ui'
 
 const COLORS = {
@@ -67,6 +68,8 @@ interface ChartProps {
   setTodayInterval: (interval: 'minute' | 'hour') => void
   multiDayInterval: 'hour' | 'day'
   setMultiDayInterval: (interval: 'hour' | 'day') => void
+  /** Optional: callback when user requests chart export (parent can open ExportModal or handle export) */
+  onExportChart?: () => void
 }
 
 type MetricType = 'pageviews' | 'visitors' | 'bounce_rate' | 'avg_duration'
@@ -80,6 +83,7 @@ function ChartTooltip({
   metricLabel,
   formatNumberFn,
   showComparison,
+  prevPeriodLabel,
   colors,
 }: {
   active?: boolean
@@ -89,6 +93,7 @@ function ChartTooltip({
   metricLabel: string
   formatNumberFn: (n: number) => string
   showComparison: boolean
+  prevPeriodLabel?: string
   colors: typeof CHART_COLORS_LIGHT
 }) {
   if (!active || !payload?.length || !label) return null
@@ -140,7 +145,7 @@ function ChartTooltip({
       </div>
       {hasPrev && (
         <div className="mt-1.5 flex items-center gap-1.5 text-xs" style={{ color: colors.textMuted }}>
-          <span>vs {formatValue(prev as number)} prev</span>
+          <span>vs {formatValue(prev as number)} {prevPeriodLabel ? `(${prevPeriodLabel})` : 'prev'}</span>
           {delta !== null && (
             <span
               className="font-medium"
@@ -164,6 +169,80 @@ function formatAxisValue(value: number): string {
   return String(value)
 }
 
+// * Returns human-readable label for the previous comparison period (e.g. "Feb 10" or "Jan 5 – Feb 4")
+function getPrevDateRangeLabel(dateRange: { start: string; end: string }): string {
+  const startDate = new Date(dateRange.start)
+  const endDate = new Date(dateRange.end)
+  const duration = endDate.getTime() - startDate.getTime()
+
+  if (duration === 0) {
+    const prev = new Date(startDate.getTime() - 24 * 60 * 60 * 1000)
+    return prev.toLocaleDateString('en-US', { month: 'short', day: 'numeric' })
+  }
+
+  const prevEnd = new Date(startDate.getTime() - 24 * 60 * 60 * 1000)
+  const prevStart = new Date(prevEnd.getTime() - duration)
+  const fmt = (d: Date) => d.toLocaleDateString('en-US', { month: 'short', day: 'numeric' })
+  return `${fmt(prevStart)} – ${fmt(prevEnd)}`
+}
+
+// * Returns short trend context (e.g. "vs yesterday", "vs previous 7 days")
+function getTrendContext(dateRange: { start: string; end: string }): string {
+  const startDate = new Date(dateRange.start)
+  const endDate = new Date(dateRange.end)
+  const duration = endDate.getTime() - startDate.getTime()
+
+  if (duration === 0) return 'vs yesterday'
+  const days = Math.round(duration / (24 * 60 * 60 * 1000))
+  if (days === 1) return 'vs yesterday'
+  return `vs previous ${days} days`
+}
+
+// * Mini sparkline SVG for KPI cards
+function Sparkline({
+  data,
+  dataKey,
+  color,
+  width = 56,
+  height = 20,
+}: {
+  data: Array<Record<string, unknown>>
+  dataKey: string
+  color: string
+  width?: number
+  height?: number
+}) {
+  if (!data.length) return null
+  const values = data.map((d) => Number(d[dataKey] ?? 0))
+  const max = Math.max(...values, 1)
+  const min = Math.min(...values, 0)
+  const range = max - min || 1
+  const padding = 2
+  const w = width - padding * 2
+  const h = height - padding * 2
+
+  const points = values.map((v, i) => {
+    const x = padding + (i / Math.max(values.length - 1, 1)) * w
+    const y = padding + h - ((v - min) / range) * h
+    return `${x},${y}`
+  })
+
+  const pathD = points.length > 1 ? `M ${points.join(' L ')}` : `M ${points[0]} L ${points[0]}`
+
+  return (
+    <svg width={width} height={height} className="flex-shrink-0" aria-hidden>
+      <path
+        d={pathD}
+        fill="none"
+        stroke={color}
+        strokeWidth={1.5}
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  )
+}
+
 export default function Chart({ 
   data, 
   prevData, 
@@ -174,12 +253,35 @@ export default function Chart({
   todayInterval,
   setTodayInterval,
   multiDayInterval,
-  setMultiDayInterval
+  setMultiDayInterval,
+  onExportChart,
 }: ChartProps) {
   const [metric, setMetric] = useState<MetricType>('visitors')
   const [showComparison, setShowComparison] = useState(false)
+  const chartContainerRef = useRef<HTMLDivElement>(null)
   const { resolvedTheme } = useTheme()
 
+  const handleExportChart = useCallback(async () => {
+    if (onExportChart) {
+      onExportChart()
+      return
+    }
+    if (!chartContainerRef.current) return
+    try {
+      const { toPng } = await import('html-to-image')
+      const dataUrl = await toPng(chartContainerRef.current, {
+        cacheBust: true,
+        backgroundColor: resolvedTheme === 'dark' ? '#171717' : '#ffffff',
+      })
+      const link = document.createElement('a')
+      link.download = `chart-${dateRange.start}-${dateRange.end}.png`
+      link.href = dataUrl
+      link.click()
+    } catch {
+      // Fallback: do nothing if export fails
+    }
+  }, [onExportChart, dateRange, resolvedTheme])
+
   const colors = useMemo(
     () => (resolvedTheme === 'dark' ? CHART_COLORS_DARK : CHART_COLORS_LIGHT),
     [resolvedTheme]
@@ -265,12 +367,16 @@ export default function Chart({
   const activeMetric = metrics.find((m) => m.id === metric) || metrics[0]
   const chartMetric = metric
   const metricLabel = metrics.find(m => m.id === metric)?.label || 'visitors'
+  const prevPeriodLabel = prevData?.length ? getPrevDateRangeLabel(dateRange) : ''
+  const trendContext = prevStats ? getTrendContext(dateRange) : ''
 
   const avg = chartData.length
     ? chartData.reduce((s, d) => s + (d[chartMetric] as number), 0) / chartData.length
     : 0
 
   const hasPrev = !!(prevData?.length && showComparison)
+  const hasData = data.length > 0
+  const hasAnyNonZero = hasData && chartData.some((d) => (d[chartMetric] as number) > 0)
 
   // * In hourly view, only show X-axis labels at 12:00 AM (date + 12:00 AM).
   const midnightTicks =
@@ -290,25 +396,33 @@ export default function Chart({
   const dayTicks = interval === 'day' && chartData.length > 0 ? chartData.map((c) => c.date) : undefined
 
   return (
-    <div className="bg-white dark:bg-neutral-900 border border-neutral-200 dark:border-neutral-800 rounded-2xl overflow-hidden shadow-sm">
+    <div
+      ref={chartContainerRef}
+      className="bg-white dark:bg-neutral-900 border border-neutral-200 dark:border-neutral-800 rounded-2xl overflow-hidden shadow-sm"
+      role="region"
+      aria-label={`Analytics chart showing ${metricLabel} over time`}
+    >
       {/* Stats Header (Interactive Tabs) */}
       <div className="grid grid-cols-2 md:grid-cols-4 divide-x divide-neutral-200 dark:divide-neutral-800 border-b border-neutral-200 dark:border-neutral-800">
         {metrics.map((item) => (
           <button
             key={item.id}
+            type="button"
             onClick={() => setMetric(item.id as MetricType)}
+            aria-pressed={metric === item.id}
+            aria-label={`Show ${item.label} chart`}
             className={`
-              p-6 text-left transition-colors relative group
+              p-4 sm:p-6 text-left transition-colors relative group
               hover:bg-neutral-50 dark:hover:bg-neutral-800/50
               ${metric === item.id ? 'bg-neutral-50 dark:bg-neutral-800/50' : ''}
-              cursor-pointer
+              cursor-pointer focus:outline-none focus-visible:ring-2 focus-visible:ring-orange-500 focus-visible:ring-offset-2
             `}
           >
             <div className={`text-xs font-semibold uppercase tracking-wider mb-1 flex items-center gap-2 ${metric === item.id ? 'text-neutral-900 dark:text-white' : 'text-neutral-500'}`}>
               {item.label}
             </div>
-            <div className="flex items-baseline gap-2">
+            <div className="flex items-baseline gap-2 flex-wrap">
-              <span className="text-2xl font-bold text-neutral-900 dark:text-white">
+              <span className="text-xl sm:text-2xl font-bold text-neutral-900 dark:text-white">
                 {item.value}
               </span>
               {item.trend !== null && (
@@ -328,6 +442,14 @@ export default function Chart({
                 </span>
               )}
             </div>
+            {trendContext && item.trend !== null && (
+              <p className="text-xs text-neutral-500 dark:text-neutral-400 mt-0.5">{trendContext}</p>
+            )}
+            {hasData && (
+              <div className="mt-2">
+                <Sparkline data={chartData} dataKey={item.id} color={item.color} />
+              </div>
+            )}
             {metric === item.id && (
                <div className="absolute bottom-0 left-0 right-0 h-1" style={{ backgroundColor: item.color }} />
             )}
@@ -355,51 +477,71 @@ export default function Chart({
                     className="h-2 w-2 rounded-full border border-dashed"
                     style={{ borderColor: colors.axis }}
                   />
-                  Previous
+                  Previous{prevPeriodLabel ? ` (${prevPeriodLabel})` : ''}
                 </span>
               </div>
             )}
           </div>
 
           {/* Right side: Controls */}
-          <div className="flex items-center gap-3 self-end sm:self-auto">
+          <div className="flex flex-wrap items-center gap-3 self-end sm:self-auto">
-            {dateRange.start === dateRange.end && (
+            <div className="flex items-center gap-2">
-              <Select
+              <span className="text-xs text-neutral-500 dark:text-neutral-400">Group by:</span>
-                value={todayInterval}
+              {dateRange.start === dateRange.end && (
-                onChange={(value) => setTodayInterval(value as 'minute' | 'hour')}
+                <Select
-                options={[
+                  value={todayInterval}
-                  { value: 'minute', label: '1 min' },
+                  onChange={(value) => setTodayInterval(value as 'minute' | 'hour')}
-                  { value: 'hour', label: '1 hour' },
+                  options={[
-                ]}
+                    { value: 'minute', label: '1 min' },
-                className="min-w-[100px]"
+                    { value: 'hour', label: '1 hour' },
-              />
+                  ]}
-            )}
+                  className="min-w-[100px]"
-            {dateRange.start !== dateRange.end && (
+                />
-              <Select
+              )}
-                value={multiDayInterval}
+              {dateRange.start !== dateRange.end && (
-                onChange={(value) => setMultiDayInterval(value as 'hour' | 'day')}
+                <Select
-                options={[
+                  value={multiDayInterval}
-                  { value: 'hour', label: '1 hour' },
+                  onChange={(value) => setMultiDayInterval(value as 'hour' | 'day')}
-                  { value: 'day', label: '1 day' },
+                  options={[
-                ]}
+                    { value: 'hour', label: '1 hour' },
-                className="min-w-[100px]"
+                    { value: 'day', label: '1 day' },
-              />
+                  ]}
-            )}
+                  className="min-w-[100px]"
+                />
+              )}
+            </div>
 
             {prevData?.length ? (
-              <Checkbox
+              <div className="flex flex-col gap-0.5">
-                checked={showComparison}
+                <Checkbox
-                onCheckedChange={setShowComparison}
+                  checked={showComparison}
-                label="Compare"
+                  onCheckedChange={setShowComparison}
-              />
+                  label="Compare with previous period"
+                />
+                {showComparison && prevPeriodLabel && (
+                  <span className="text-xs text-neutral-500 dark:text-neutral-400">
+                    ({prevPeriodLabel})
+                  </span>
+                )}
+              </div>
             ) : null}
 
+            <Button
+              variant="ghost"
+              onClick={handleExportChart}
+              disabled={!hasData}
+              className="gap-1.5 py-1.5 px-3 text-sm text-neutral-600 dark:text-neutral-400"
+            >
+              <DownloadIcon className="w-4 h-4" />
+              Export chart
+            </Button>
+
             {/* Vertical Separator */}
             <div className="h-4 w-px bg-neutral-200 dark:bg-neutral-800" />
           </div>
         </div>
 
-        {data.length === 0 ? (
+        {!hasData ? (
           <div className="flex h-[320px] flex-col items-center justify-center gap-3 rounded-lg border border-dashed border-neutral-200 dark:border-neutral-700 bg-neutral-50/50 dark:bg-neutral-800/30">
             <BarChartIcon className="h-12 w-12 text-neutral-300 dark:text-neutral-600" aria-hidden />
             <p className="text-sm font-medium text-neutral-500 dark:text-neutral-400">
@@ -407,6 +549,14 @@ export default function Chart({
             </p>
             <p className="text-xs text-neutral-400 dark:text-neutral-500">Try a different date range</p>
           </div>
+        ) : !hasAnyNonZero ? (
+          <div className="flex h-[320px] flex-col items-center justify-center gap-3 rounded-lg border border-dashed border-neutral-200 dark:border-neutral-700 bg-neutral-50/50 dark:bg-neutral-800/30">
+            <BarChartIcon className="h-12 w-12 text-neutral-300 dark:text-neutral-600" aria-hidden />
+            <p className="text-sm font-medium text-neutral-500 dark:text-neutral-400">
+              No {metricLabel.toLowerCase()} data for this period
+            </p>
+            <p className="text-xs text-neutral-400 dark:text-neutral-500">Try selecting another metric or date range</p>
+          </div>
         ) : (
           <div className="h-[360px] w-full">
             <ResponsiveContainer width="100%" height="100%">
@@ -439,7 +589,14 @@ export default function Chart({
                     if (metric === 'avg_duration') return formatDuration(val)
                     return formatAxisValue(val)
                   }}
-                />
+                >
+                  <Label
+                    value={metricLabel}
+                    position="insideTopLeft"
+                    offset={8}
+                    style={{ fill: colors.axis, fontSize: 11, fontWeight: 500 }}
+                  />
+                </YAxis>
                 <Tooltip
                   content={(p: TooltipProps<number, string>) => (
                     <ChartTooltip
@@ -453,6 +610,7 @@ export default function Chart({
                       metricLabel={metricLabel}
                       formatNumberFn={formatNumber}
                       showComparison={hasPrev}
+                      prevPeriodLabel={prevPeriodLabel}
                       colors={colors}
                     />
                   )}
@@ -465,6 +623,12 @@ export default function Chart({
                     stroke={colors.axis}
                     strokeDasharray="4 4"
                     strokeOpacity={0.7}
+                    label={{
+                      value: `Avg: ${metric === 'bounce_rate' ? `${Math.round(avg)}%` : metric === 'avg_duration' ? formatDuration(avg) : formatAxisValue(avg)}`,
+                      position: 'right',
+                      fill: colors.axis,
+                      fontSize: 11,
+                    }}
                   />
                 )}
 

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "pulse-frontend",
-  "version": "0.1.3",
+  "version": "0.4.0-alpha",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "pulse-frontend",
-      "version": "0.1.3",
+      "version": "0.4.0-alpha",
       "dependencies": {
         "@ciphera-net/ui": "^0.0.49",
         "@ducanh2912/next-pwa": "^10.2.9",
@@ -14,6 +14,7 @@
         "country-flag-icons": "^1.6.4",
         "d3-scale": "^4.0.2",
         "framer-motion": "^12.23.26",
+        "html-to-image": "^1.11.13",
         "i18n-iso-countries": "^7.14.0",
         "iso-3166-2": "^1.0.0",
         "jspdf": "^4.0.0",
@@ -6092,6 +6093,12 @@
         "hermes-estree": "0.25.1"
       }
     },
+    "node_modules/html-to-image": {
+      "version": "1.11.13",
+      "resolved": "https://registry.npmjs.org/html-to-image/-/html-to-image-1.11.13.tgz",
+      "integrity": "sha512-cuOPoI7WApyhBElTTb9oqsawRvZ0rHhaHwghRLlTuffoD1B2aDemlCruLeZrUIIdvG7gs9xeELEPm6PhuASqrg==",
+      "license": "MIT"
+    },
     "node_modules/html-url-attributes": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/html-url-attributes/-/html-url-attributes-3.0.1.tgz",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse-frontend",
-  "version": "0.4.0-alpha",
+  "version": "0.5.0-alpha",
   "private": true,
   "scripts": {
     "dev": "next dev",
@@ -16,6 +16,7 @@
     "country-flag-icons": "^1.6.4",
     "d3-scale": "^4.0.2",
     "framer-motion": "^12.23.26",
+    "html-to-image": "^1.11.13",
     "i18n-iso-countries": "^7.14.0",
     "iso-3166-2": "^1.0.0",
     "jspdf": "^4.0.0",