fix: prevent duplicate filters, support Direct referrer, pass filters to Campaigns

- Deduplicate filters so clicking the same item twice doesn't stack identical pills
- Normalize "Direct" referrer to empty string so direct traffic filtering works
- Pass active filters through to Campaigns component so it respects dashboard filters

CHANGELOG.md

@@ -6,6 +6,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ## [Unreleased]
 
+## [0.13.1-alpha] - 2026-03-06
+
+### Added
+
+- **Hover percentages on dashboard panels.** When you hover over any item in the Content, Locations, Technology, or Top Referrers panels, a percentage now smoothly slides in next to the count — showing you at a glance how much of total traffic that item represents.
+- **Click any item to filter your dashboard.** Clicking a referrer, browser, country, city, page, OS, or device in any dashboard panel now instantly filters your entire dashboard to show only that traffic. No need to open the filter modal — just click the item you're curious about.
+- **Redesigned filter button.** The old dashed "Add filter" dropdown has been replaced with a clean modal. Pick a dimension from a visual grid, choose an operator, enter a value, and apply — all in a focused overlay.
+
+### Fixed
+
+- **Clicking the same item no longer creates duplicate filters.** Previously, clicking the same referrer or browser multiple times would stack identical filter pills. Now the dashboard recognizes you already have that filter active and ignores the duplicate.
+- **"Direct" traffic can now be filtered.** Typing "Direct" as a referrer filter value now correctly matches visitors who arrived without a referrer. Previously this showed zero results because the system didn't recognize "Direct" as a special value.
+- **Campaigns now respect active filters.** The Campaigns panel previously ignored your active filters — so if you filtered by a specific referrer or country, campaigns still showed all data. Campaigns now filter along with the rest of your dashboard.
+
 ## [0.13.0-alpha] - 2026-03-02
 
 ### Added

app/sites/[id]/page.tsx

@@ -98,7 +98,18 @@ export default function SiteDashboardPage() {
   const [selectedEvent, setSelectedEvent] = useState<string | null>(null)
 
   const handleAddFilter = useCallback((filter: DimensionFilter) => {
-    setFilters(prev => [...prev, filter])
+    // Normalize "Direct" referrer to empty string (direct traffic has no referrer in DB)
+    const normalized = { ...filter }
+    if (normalized.dimension === 'referrer') {
+      normalized.values = normalized.values.map(v => v.toLowerCase() === 'direct' ? '' : v)
+    }
+    setFilters(prev => {
+      const isDuplicate = prev.some(
+        f => f.dimension === normalized.dimension && f.operator === normalized.operator && f.values.join(';') === normalized.values.join(';')
+      )
+      if (isDuplicate) return prev
+      return [...prev, normalized]
+    })
   }, [])
 
   const handleRemoveFilter = useCallback((index: number) => {
@@ -427,7 +438,7 @@ export default function SiteDashboardPage() {
 
       {/* Campaigns Report */}
       <div className="mb-8">
-        <Campaigns siteId={siteId} dateRange={dateRange} />
+        <Campaigns siteId={siteId} dateRange={dateRange} filters={filtersParam || undefined} />
       </div>
 
       <div className="grid gap-6 lg:grid-cols-2 mb-8">

components/dashboard/Campaigns.tsx

@@ -17,6 +17,7 @@ import UtmBuilder from '@/components/tools/UtmBuilder'
 interface CampaignsProps {
   siteId: string
   dateRange: { start: string, end: string }
+  filters?: string
 }
 
 const LIMIT = 7
@@ -41,7 +42,7 @@ function campaignRowKey(item: CampaignStat): string {
   return `${item.source}|${item.medium}|${item.campaign}`
 }
 
-export default function Campaigns({ siteId, dateRange }: CampaignsProps) {
+export default function Campaigns({ siteId, dateRange, filters }: CampaignsProps) {
   const [data, setData] = useState<CampaignStat[]>([])
   const [isLoading, setIsLoading] = useState(true)
   const [isModalOpen, setIsModalOpen] = useState(false)
@@ -56,7 +57,7 @@ export default function Campaigns({ siteId, dateRange }: CampaignsProps) {
     const fetchData = async () => {
       setIsLoading(true)
       try {
-        const result = await getCampaigns(siteId, dateRange.start, dateRange.end, 10)
+        const result = await getCampaigns(siteId, dateRange.start, dateRange.end, 10, filters)
         setData(result)
       } catch (e) {
         logger.error(e)
@@ -65,14 +66,14 @@ export default function Campaigns({ siteId, dateRange }: CampaignsProps) {
       }
     }
     fetchData()
-  }, [siteId, dateRange])
+  }, [siteId, dateRange, filters])
 
   useEffect(() => {
     if (isModalOpen) {
       const fetchFullData = async () => {
         setIsLoadingFull(true)
         try {
-          const result = await getCampaigns(siteId, dateRange.start, dateRange.end, 100)
+          const result = await getCampaigns(siteId, dateRange.start, dateRange.end, 100, filters)
           setFullData(result)
         } catch (e) {
           logger.error(e)
@@ -84,7 +85,7 @@ export default function Campaigns({ siteId, dateRange }: CampaignsProps) {
     } else {
       setFullData([])
     }
-  }, [isModalOpen, siteId, dateRange])
+  }, [isModalOpen, siteId, dateRange, filters])
 
   const sortedData = useMemo(
     () => sortCampaigns(data, sortKey, sortDir),

lib/filters.ts

@@ -55,6 +55,8 @@ export function parseFiltersFromURL(raw: string): DimensionFilter[] {
 export function filterLabel(f: DimensionFilter): string {
   const dim = DIMENSION_LABELS[f.dimension] || f.dimension
   const op = OPERATOR_LABELS[f.operator] || f.operator
-  const val = f.values.length > 1 ? `${f.values[0]} +${f.values.length - 1}` : f.values[0]
+  const rawVal = f.values.length > 1 ? `${f.values[0]} +${f.values.length - 1}` : f.values[0]
+  // Show "Direct" for empty referrer values (direct traffic has no referrer in DB)
+  const val = f.dimension === 'referrer' && rawVal === '' ? 'Direct' : rawVal
   return `${dim} ${op} ${val}`
 }