feat: add dashboard dimension filtering and custom event properties

Dashboard filtering: FilterBar pills, AddFilterDropdown with dimension/
operator/value steps, URL-serialized filters, all SWR hooks filter-aware.

Custom event properties: pulse.track() accepts props object, EventProperties
panel with auto-discovered key tabs and value bar charts, clickable goal rows.

Updated changelog with both features under v0.13.0-alpha.

components/dashboard/EventProperties.tsx

@@ -0,0 +1,108 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import { formatNumber } from '@ciphera-net/ui'
+import { getEventPropertyKeys, getEventPropertyValues, type EventPropertyKey, type EventPropertyValue } from '@/lib/api/stats'
+
+interface EventPropertiesProps {
+  siteId: string
+  eventName: string
+  dateRange: { start: string; end: string }
+  onClose: () => void
+}
+
+export default function EventProperties({ siteId, eventName, dateRange, onClose }: EventPropertiesProps) {
+  const [keys, setKeys] = useState<EventPropertyKey[]>([])
+  const [selectedKey, setSelectedKey] = useState<string | null>(null)
+  const [values, setValues] = useState<EventPropertyValue[]>([])
+  const [loading, setLoading] = useState(true)
+
+  useEffect(() => {
+    setLoading(true)
+    getEventPropertyKeys(siteId, eventName, dateRange.start, dateRange.end)
+      .then(k => {
+        setKeys(k)
+        if (k.length > 0) setSelectedKey(k[0].key)
+      })
+      .finally(() => setLoading(false))
+  }, [siteId, eventName, dateRange.start, dateRange.end])
+
+  useEffect(() => {
+    if (!selectedKey) return
+    getEventPropertyValues(siteId, eventName, selectedKey, dateRange.start, dateRange.end)
+      .then(setValues)
+  }, [siteId, eventName, selectedKey, dateRange.start, dateRange.end])
+
+  const maxCount = values.length > 0 ? values[0].count : 1
+
+  return (
+    <div className="bg-white dark:bg-neutral-900 border border-neutral-200 dark:border-neutral-800 rounded-2xl p-6">
+      <div className="flex items-center justify-between mb-4">
+        <h3 className="text-lg font-semibold text-neutral-900 dark:text-white">
+          Properties: <span className="text-brand-orange">{eventName.replace(/_/g, ' ')}</span>
+        </h3>
+        <button
+          onClick={onClose}
+          className="text-neutral-400 hover:text-neutral-600 dark:hover:text-neutral-300 transition-colors cursor-pointer"
+        >
+          <svg className="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
+            <path strokeLinecap="round" strokeLinejoin="round" d="M6 18L18 6M6 6l12 12" />
+          </svg>
+        </button>
+      </div>
+
+      {loading ? (
+        <div className="animate-pulse space-y-3">
+          {[1, 2, 3].map(i => (
+            <div key={i} className="h-8 bg-neutral-100 dark:bg-neutral-800 rounded-lg" />
+          ))}
+        </div>
+      ) : keys.length === 0 ? (
+        <p className="text-sm text-neutral-500 dark:text-neutral-400 py-4 text-center">
+          No properties recorded for this event yet.
+        </p>
+      ) : (
+        <>
+          <div className="flex gap-2 mb-4 flex-wrap">
+            {keys.map(k => (
+              <button
+                key={k.key}
+                onClick={() => setSelectedKey(k.key)}
+                className={`px-3 py-1 text-xs font-medium rounded-full transition-colors cursor-pointer ${
+                  selectedKey === k.key
+                    ? 'bg-brand-orange text-white'
+                    : 'bg-neutral-100 dark:bg-neutral-800 text-neutral-600 dark:text-neutral-400 hover:bg-neutral-200 dark:hover:bg-neutral-700'
+                }`}
+              >
+                {k.key}
+              </button>
+            ))}
+          </div>
+
+          <div className="space-y-2">
+            {values.map(v => (
+              <div key={v.value} className="flex items-center gap-3">
+                <div className="flex-1 min-w-0">
+                  <div className="flex items-center justify-between mb-1">
+                    <span className="text-sm font-medium text-neutral-900 dark:text-white truncate">
+                      {v.value}
+                    </span>
+                    <span className="text-xs font-semibold text-brand-orange tabular-nums ml-2">
+                      {formatNumber(v.count)}
+                    </span>
+                  </div>
+                  <div className="w-full h-1.5 bg-neutral-100 dark:bg-neutral-800 rounded-full overflow-hidden">
+                    <div
+                      className="h-full bg-brand-orange/60 rounded-full transition-all"
+                      style={{ width: `${(v.count / maxCount) * 100}%` }}
+                    />
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        </>
+      )}
+    </div>
+  )
+}