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)/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()