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)/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')