feat(auth): phase 3 — replace Supabase GoTrue with bcryptjs+jose

Custom auth stack: bcryptjs password hashing (cost 10, GoTrue-compatible),
jose JWT session cookies (edge-safe, 8hr TTL), new API routes for
login/logout/reset/change-password, middleware rewritten to JWT-only
verification with no DB access. All 38 protected pages and API routes
migrated from supabase.auth.getUser() to getSession(). Supabase .from()
queries retained for Phase 4. lib/db/index.ts refactored to lazy Proxy
singleton to avoid module-level throw during Next.js build.

tsc: clean, build: clean, tests: 4/4 passed

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/(protected)/admin/page.tsx

@@ -3,18 +3,17 @@ export const dynamic = 'force-dynamic'
 import Link from 'next/link'
 import { redirect } from 'next/navigation'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { UserManager, type AdminUser, type SiteOption } from '@/components/admin/user-manager'
 import { SiteZoneManager, type SiteWithZones } from '@/components/admin/site-zone-manager'
 import { TruckManager, type Truck } from '@/components/admin/truck-manager'
 
 export default async function AdminHome() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
+  const session = await getSession()
+  if (!session) redirect('/login')
+  if (session.role !== 'admin') redirect('/login')
 
-  const { data: profile } = await supabase
-    .from('users').select('role').eq('id', user.id).single()
-  if (!profile || profile.role !== 'admin') redirect('/login')
+  const supabase = await createClient()
 
   const [{ data: users }, { data: sites }, { data: trucks }] = await Promise.all([
     supabase

app/(protected)/capa-owner/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 import { StatCard } from '@/components/dashboard/stat-card'
 import { CapaOwnerActions } from '@/components/capa/capa-owner-actions'
 import { CapaOwnerNotesForm } from '@/components/capa/capa-owner-notes-form'
@@ -28,17 +29,16 @@ const STATUS_COLORS: Record<string, string> = {
 }
 
 export default async function CapaOwnerPage() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
+  const session = await getSession()
+  if (!session) redirect('/login')
+  if (!['capa_owner', 'admin', 'hse', 'supervisor'].includes(session.role)) redirect('/')
 
-  const { data: profile } = await supabase.from('users').select('name, role').eq('id', user.id).single()
-  if (!profile || !['capa_owner', 'admin', 'hse', 'supervisor'].includes(profile.role)) redirect('/')
+  const supabase = await createClient()
 
   const { data: capas } = await supabase
     .from('capa_actions')
     .select('id, description, due_date, priority, status, incident_id, owner_notes, incidents (reference_no)')
-    .eq('owner_user_id', user.id)
+    .eq('owner_user_id', session.sub)
     .order('due_date', { ascending: true, nullsFirst: false })
 
   const rows = capas ?? []

app/(protected)/hse/capa/[id]/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import { notFound, redirect } from 'next/navigation'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { VerifyForm } from '@/components/capa/verify-form'
 import { CloseCapaButton } from '@/components/capa/close-capa-button'
 
@@ -18,12 +19,10 @@ const PRIORITY_BADGE: Record<string, string> = {
 
 export default async function CapaDetailPage({ params }: Props) {
   const { id } = await params
-  const supabase = await createClient()
-  const { data, error: authError } = await supabase.auth.getUser()
-  if (authError || !data?.user) redirect(`/login?redirect=/hse/capa/${id}`)
+  const session = await getSession()
+  if (!session) redirect(`/login?redirect=/hse/capa/${id}`)
 
-  const { data: profile } = await supabase
-    .from('users').select('role').eq('id', data.user.id).single()
+  const supabase = await createClient()
 
   const { data: capa } = await supabase
     .from('capa_actions')
@@ -39,7 +38,7 @@ export default async function CapaDetailPage({ params }: Props) {
 
   if (!capa) notFound()
 
-  const isHse = profile && ['hse', 'admin'].includes(profile.role)
+  const isHse = session && ['hse', 'admin'].includes(session.role)
   const status = (capa as { status: string }).status
 
   return (

app/(protected)/hse/capa/page.tsx

@@ -3,12 +3,14 @@ export const dynamic = 'force-dynamic'
 import { redirect } from 'next/navigation'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { CapaBoard } from '@/components/capa/capa-board'
 
 export default async function CapaListPage() {
+  const session = await getSession()
+  if (!session) redirect('/login?redirect=/hse/capa')
+
   const supabase = await createClient()
-  const { data, error: authError } = await supabase.auth.getUser()
-  if (authError || !data?.user) redirect('/login?redirect=/hse/capa')
 
   const { data: capas } = await supabase
     .from('capa_actions')

app/(protected)/hse/incidents/[id]/capa/new/page.tsx

@@ -1,6 +1,7 @@
 import { notFound, redirect } from 'next/navigation'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { CapaForm } from '@/components/capa/capa-form'
 
 interface Props {
@@ -9,13 +10,11 @@ interface Props {
 
 export default async function NewCapaPage({ params }: Props) {
   const { id } = await params
-  const supabase = await createClient()
-  const { data, error: authError } = await supabase.auth.getUser()
-  if (authError || !data?.user) redirect(`/login?redirect=/hse/incidents/${id}/capa/new`)
+  const session = await getSession()
+  if (!session) redirect(`/login?redirect=/hse/incidents/${id}/capa/new`)
+  if (!['hse', 'admin'].includes(session.role)) redirect('/hse/incidents')
 
-  const { data: profile } = await supabase
-    .from('users').select('role').eq('id', data.user.id).single()
-  if (!profile || !['hse', 'admin'].includes(profile.role)) redirect('/hse/incidents')
+  const supabase = await createClient()
 
   const { data: incident } = await supabase
     .from('incidents').select('id, reference_no, status').eq('id', id).single()

app/(protected)/hse/incidents/[id]/investigation/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import { notFound, redirect } from 'next/navigation'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { InvestigationForm } from '@/components/incidents/investigation-form'
 
 interface Props {
@@ -11,15 +12,12 @@ interface Props {
 
 export default async function InvestigationPage({ params }: Props) {
   const { id } = await params
+  const session = await getSession()
+  if (!session) redirect(`/login?redirect=/hse/incidents/${id}/investigation`)
+  if (!['hse', 'admin'].includes(session.role)) redirect('/hse/incidents')
+
   const supabase = await createClient()
 
-  const { data, error: authError } = await supabase.auth.getUser()
-  if (authError || !data?.user) redirect(`/login?redirect=/hse/incidents/${id}/investigation`)
-
-  const { data: profile } = await supabase
-    .from('users').select('role').eq('id', data.user.id).single()
-  if (!profile || !['hse', 'admin'].includes(profile.role)) redirect('/hse/incidents')
-
   const { data: incident } = await supabase
     .from('incidents')
     .select('id, reference_no, status')

app/(protected)/hse/incidents/[id]/triage/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import { notFound, redirect } from 'next/navigation'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { TriageForm } from '@/components/incidents/triage-form'
 
 interface Props {
@@ -11,15 +12,12 @@ interface Props {
 
 export default async function TriagePage({ params }: Props) {
   const { id } = await params
+  const session = await getSession()
+  if (!session) redirect(`/login?redirect=/hse/incidents/${id}/triage`)
+  if (!['hse', 'admin'].includes(session.role)) redirect('/hse/incidents')
+
   const supabase = await createClient()
 
-  const { data, error: authError } = await supabase.auth.getUser()
-  if (authError || !data?.user) redirect(`/login?redirect=/hse/incidents/${id}/triage`)
-
-  const { data: profile } = await supabase
-    .from('users').select('role').eq('id', data.user.id).single()
-  if (!profile || !['hse', 'admin'].includes(profile.role)) redirect('/hse/incidents')
-
   const { data: incident } = await supabase
     .from('incidents')
     .select('id, reference_no, incident_type, status, severity')

app/(protected)/hse/page.tsx

@@ -1,20 +1,17 @@
 export const dynamic = 'force-dynamic'
 
 import Link from 'next/link'
-import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 
 export default async function HsePage() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
-
-  const { data: profile } = await supabase.from('users').select('name').eq('id', user.id).single()
+  const session = await getSession()
+  if (!session) redirect('/login')
 
   return (
     <main className="max-w-4xl mx-auto px-4 py-6">
       <h1 className="text-2xl font-bold text-gray-900 mb-1">HSE Officer Portal</h1>
-      <p className="text-gray-500 text-sm mb-8">Welcome, {profile?.name ?? user.email}</p>
+      <p className="text-gray-500 text-sm mb-8">Welcome, {session.name}</p>
       <div className="grid grid-cols-2 gap-4 sm:grid-cols-3">
         <Link href="/hse/incidents" className="bg-white rounded-xl shadow-sm p-5 hover:shadow-md transition-shadow border border-gray-100">
           <div className="text-2xl mb-2">📋</div>

app/(protected)/hse/settings/page.tsx

@@ -2,15 +2,15 @@ export const dynamic = 'force-dynamic'
 
 import { redirect } from 'next/navigation'
 import { createClient } from '@/lib/supabase/server'
+import { getSession } from '@/lib/auth/get-session'
 import { ApiKeyForm } from '@/components/settings/api-key-form'
 
 export default async function SettingsPage() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
+  const session = await getSession()
+  if (!session) redirect('/login')
+  if (session.role !== 'admin') redirect('/hse/dashboard')
 
-  const { data: profile } = await supabase.from('users').select('role').eq('id', user.id).single()
-  if (!profile || profile.role !== 'admin') redirect('/hse/dashboard')
+  const supabase = await createClient()
 
   const { data: settings } = await supabase
     .from('app_settings')

app/(protected)/layout.tsx

@@ -1,7 +1,7 @@
 export const dynamic = 'force-dynamic'
 
-import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 import { Sidebar } from '@/components/layout/sidebar'
 
 export default async function ProtectedLayout({
@@ -9,25 +9,15 @@ export default async function ProtectedLayout({
 }: {
   children: React.ReactNode
 }) {
-  const supabase = await createClient()
-  const {
-    data: { user },
-  } = await supabase.auth.getUser()
-
-  if (!user) redirect('/login')
-
-  const { data: profile } = await supabase
-    .from('users')
-    .select('role, name, email')
-    .eq('id', user.id)
-    .single()
+  const session = await getSession()
+  if (!session) redirect('/login')
 
   return (
     <div className="min-h-screen bg-gray-50">
       <Sidebar
-        role={profile?.role ?? 'reporter'}
-        userName={profile?.name ?? user.email ?? ''}
-        userEmail={profile?.email ?? user.email ?? ''}
+        role={session.role}
+        userName={session.name}
+        userEmail=""
       />
       <div className="sm:ml-60 pb-16 sm:pb-0">
         {children}

app/(protected)/management/page.tsx

@@ -2,16 +2,16 @@ export const dynamic = 'force-dynamic'
 
 import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 import { StatCard } from '@/components/dashboard/stat-card'
 import { RiskFlagsPanel } from '@/components/dashboard/risk-flags-panel'
 
 export default async function ManagementPage() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
+  const session = await getSession()
+  if (!session) redirect('/login')
+  if (!['management', 'admin'].includes(session.role)) redirect('/')
 
-  const { data: profile } = await supabase.from('users').select('role').eq('id', user.id).single()
-  if (!profile || !['management', 'admin'].includes(profile.role)) redirect('/')
+  const supabase = await createClient()
 
   const now = new Date()
   const thisMonthStart = new Date(now.getFullYear(), now.getMonth(), 1).toISOString()

app/(protected)/reporter/incidents/[id]/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
 import { redirect, notFound } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 
 const STATUS_LABELS: Record<string, string> = {
   reported: 'Reported', triaged: 'Triaged', investigating: 'Investigating',
@@ -20,9 +21,10 @@ export default async function ReporterIncidentDetail({
   params: Promise<{ id: string }>
 }) {
   const { id } = await params
+  const session = await getSession()
+  if (!session) redirect('/login')
+
   const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
 
   const { data: inc } = await supabase
     .from('incidents')
@@ -33,7 +35,7 @@ export default async function ReporterIncidentDetail({
       capa_actions (id, description, status, due_date)
     `)
     .eq('id', id)
-    .eq('reported_by', user.id)
+    .eq('reported_by', session.sub)
     .single()
 
   if (!inc) notFound()

app/(protected)/reporter/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 
 const STATUS_LABELS: Record<string, string> = {
   reported: 'Reported',
@@ -28,16 +29,15 @@ const TYPE_LABELS: Record<string, string> = {
 }
 
 export default async function ReporterPage() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
+  const session = await getSession()
+  if (!session) redirect('/login')
 
-  const { data: profile } = await supabase.from('users').select('name').eq('id', user.id).single()
+  const supabase = await createClient()
 
   const { data: incidents } = await supabase
     .from('incidents')
     .select('id, reference_no, incident_type, status, reported_at, severity, sites (name)')
-    .eq('reported_by', user.id)
+    .eq('reported_by', session.sub)
     .order('reported_at', { ascending: false })
 
   const rows = incidents ?? []
@@ -49,7 +49,7 @@ export default async function ReporterPage() {
       <div className="flex items-center justify-between mb-6">
         <div>
           <h1 className="text-2xl font-bold text-gray-900">My Reports</h1>
-          <p className="text-sm text-gray-400 mt-0.5">Welcome, {profile?.name ?? user.email}</p>
+          <p className="text-sm text-gray-400 mt-0.5">Welcome, {session.name}</p>
         </div>
         <Link
           href="/report"

app/(protected)/supervisor/page.tsx

@@ -3,6 +3,7 @@ export const dynamic = 'force-dynamic'
 import Link from 'next/link'
 import { createClient } from '@/lib/supabase/server'
 import { redirect } from 'next/navigation'
+import { getSession } from '@/lib/auth/get-session'
 import { StatCard } from '@/components/dashboard/stat-card'
 
 const STATUS_LABELS: Record<string, string> = {
@@ -24,17 +25,13 @@ const STATUS_COLORS: Record<string, string> = {
 }
 
 export default async function SupervisorPage() {
-  const supabase = await createClient()
-  const { data: { user } } = await supabase.auth.getUser()
-  if (!user) redirect('/login')
+  const session = await getSession()
+  if (!session) redirect('/login')
+  if (!['supervisor', 'admin'].includes(session.role)) redirect('/')
 
-  const { data: profile } = await supabase
-    .from('users')
-    .select('name, site_id, role')
-    .eq('id', user.id)
-    .single()
-  if (!profile || !['supervisor', 'admin'].includes(profile.role)) redirect('/')
-  if (!profile.site_id) {
+  const supabase = await createClient()
+
+  if (!session.siteId) {
     return (
       <main className="max-w-4xl mx-auto px-4 py-6">
         <h1 className="text-2xl font-bold text-gray-900 mb-4">Supervisor Portal</h1>
@@ -43,14 +40,14 @@ export default async function SupervisorPage() {
     )
   }
 
-  const { data: siteRow } = await supabase.from('sites').select('name').eq('id', profile.site_id).single()
+  const { data: siteRow } = await supabase.from('sites').select('name').eq('id', session.siteId).single()
   const siteName = (siteRow as unknown as { name: string } | null)?.name ?? 'Your Site'
 
   // Resolve incident IDs once to avoid duplicate queries inside Promise.all
   const { data: siteIncidents } = await supabase
     .from('incidents')
     .select('id')
-    .eq('site_id', profile.site_id)
+    .eq('site_id', session.siteId)
   const incidentIds = siteIncidents?.map(r => r.id) ?? []
 
   const [
@@ -63,19 +60,19 @@ export default async function SupervisorPage() {
     supabase
       .from('incidents')
       .select('id, reference_no, incident_type, status, reported_at')
-      .eq('site_id', profile.site_id)
+      .eq('site_id', session.siteId)
       .neq('status', 'closed')
       .order('reported_at', { ascending: false })
       .limit(10),
     supabase
       .from('incidents')
       .select('*', { count: 'exact', head: true })
-      .eq('site_id', profile.site_id)
+      .eq('site_id', session.siteId)
       .eq('status', 'closed'),
     supabase
       .from('incidents')
       .select('*', { count: 'exact', head: true })
-      .eq('site_id', profile.site_id)
+      .eq('site_id', session.siteId)
       .neq('status', 'closed'),
     supabase
       .from('capa_actions')