feat(funnels): add edit funnel page with pre-populated form

app/sites/[id]/funnels/[funnelId]/edit/page.tsx

@@ -0,0 +1,58 @@
+'use client'
+
+import { useEffect, useState } from 'react'
+import { useParams, useRouter } from 'next/navigation'
+import { useSWRConfig } from 'swr'
+import { getFunnel, updateFunnel, type Funnel, type CreateFunnelRequest } from '@/lib/api/funnels'
+import { toast } from '@ciphera-net/ui'
+import FunnelForm from '@/components/funnels/FunnelForm'
+import { FunnelDetailSkeleton } from '@/components/skeletons'
+
+export default function EditFunnelPage() {
+  const params = useParams()
+  const router = useRouter()
+  const { mutate } = useSWRConfig()
+  const siteId = params.id as string
+  const funnelId = params.funnelId as string
+  const [funnel, setFunnel] = useState<Funnel | null>(null)
+  const [saving, setSaving] = useState(false)
+
+  useEffect(() => {
+    getFunnel(siteId, funnelId).then(setFunnel).catch(() => {
+      toast.error('Failed to load funnel')
+      router.push(`/sites/${siteId}/funnels`)
+    })
+  }, [siteId, funnelId, router])
+
+  const handleSubmit = async (data: CreateFunnelRequest) => {
+    try {
+      setSaving(true)
+      await updateFunnel(siteId, funnelId, data)
+      await mutate(['funnels', siteId])
+      toast.success('Funnel updated')
+      router.push(`/sites/${siteId}/funnels/${funnelId}`)
+    } catch {
+      toast.error('Failed to update funnel. Please try again.')
+    } finally {
+      setSaving(false)
+    }
+  }
+
+  if (!funnel) return <FunnelDetailSkeleton />
+
+  return (
+    <FunnelForm
+      siteId={siteId}
+      initialData={{
+        name: funnel.name,
+        description: funnel.description,
+        steps: funnel.steps.map(({ order, ...rest }) => rest),
+        conversion_window_value: funnel.conversion_window_value,
+        conversion_window_unit: funnel.conversion_window_unit,
+      }}
+      onSubmit={handleSubmit}
+      submitLabel={saving ? 'Saving...' : 'Save Changes'}
+      cancelHref={`/sites/${siteId}/funnels/${funnelId}`}
+    />
+  )
+}

app/sites/[id]/funnels/[funnelId]/page.tsx

@@ -8,6 +8,7 @@ import FilterBar from '@/components/dashboard/FilterBar'
 import AddFilterDropdown from '@/components/dashboard/AddFilterDropdown'
 import { type DimensionFilter, serializeFilters } from '@/lib/filters'
 import { toast, Select, DatePicker, ChevronLeftIcon, ArrowRightIcon, TrashIcon, Button } from '@ciphera-net/ui'
+import { PencilSimple } from '@phosphor-icons/react'
 import { FunnelDetailSkeleton, useMinimumLoading, useSkeletonFade } from '@/components/skeletons'
 import Link from 'next/link'
 import { FunnelChart } from '@/components/ui/funnel-chart'
@@ -162,6 +163,13 @@ export default function FunnelReportPage() {
               ]}
             />
             
+            <Link
+              href={`/sites/${siteId}/funnels/${funnelId}/edit`}
+              className="p-2 text-neutral-400 hover:text-brand-orange hover:bg-orange-50 dark:hover:bg-orange-900/20 rounded-xl transition-colors"
+              aria-label="Edit funnel"
+            >
+              <PencilSimple className="w-5 h-5" />
+            </Link>
             <button
               onClick={handleDelete}
               className="p-2 text-neutral-400 hover:text-red-500 hover:bg-red-50 dark:hover:bg-red-900/20 rounded-xl transition-colors"