Remove multi-tenant company_id scoping from entire codebase

Drop company_id column from all 22 domain tables via migration.
Remove companyId from JWT payload, auth plugins, all service method
signatures (~215 occurrences), all route handlers (~105 occurrences),
test runner, test suites, and frontend auth store/types.

The company table stays as store settings (name, timezone). Tenant
isolation in a SaaS deployment would be at the database level (one
DB per customer) not the application level.

All 107 API tests pass. Zero TSC errors across all packages.

packages/admin/src/stores/auth.store.ts

@@ -11,7 +11,6 @@ interface User {
 interface AuthState {
   token: string | null
   user: User | null
-  companyId: string | null
   permissions: Set<string>
   permissionsLoaded: boolean
   setAuth: (token: string, user: User) => void
@@ -49,12 +48,7 @@ function expandPermissions(slugs: string[]): Set<string> {
   return expanded
 }
 
-function decodeJwtPayload(token: string): { id: string; companyId: string; role: string } {
-  const payload = token.split('.')[1]
-  return JSON.parse(atob(payload))
-}
-
-function loadSession(): { token: string; user: User; companyId: string; permissions?: string[] } | null {
+function loadSession(): { token: string; user: User; permissions?: string[] } | null {
   try {
     const raw = sessionStorage.getItem('forte-auth')
     if (!raw) return null
@@ -64,8 +58,8 @@ function loadSession(): { token: string; user: User; companyId: string; permissi
   }
 }
 
-function saveSession(token: string, user: User, companyId: string, permissions?: string[]) {
-  sessionStorage.setItem('forte-auth', JSON.stringify({ token, user, companyId, permissions }))
+function saveSession(token: string, user: User, permissions?: string[]) {
+  sessionStorage.setItem('forte-auth', JSON.stringify({ token, user, permissions }))
 }
 
 function clearSession() {
@@ -78,22 +72,19 @@ export const useAuthStore = create<AuthState>((set, get) => {
   return {
   token: initial?.token ?? null,
   user: initial?.user ?? null,
-  companyId: initial?.companyId ?? null,
   permissions: initialPerms,
   permissionsLoaded: initialPerms.size > 0,
 
   setAuth: (token, user) => {
-    const payload = decodeJwtPayload(token)
-    saveSession(token, user, payload.companyId)
-    set({ token, user, companyId: payload.companyId })
+    saveSession(token, user)
+    set({ token, user })
   },
 
   setPermissions: (slugs: string[]) => {
     const expanded = expandPermissions(slugs)
-    // Update session storage to include permissions
-    const { token, user, companyId } = get()
-    if (token && user && companyId) {
-      saveSession(token, user, companyId, slugs)
+    const { token, user } = get()
+    if (token && user) {
+      saveSession(token, user, slugs)
     }
     set({ permissions: expanded, permissionsLoaded: true })
   },
@@ -104,6 +95,6 @@ export const useAuthStore = create<AuthState>((set, get) => {
 
   logout: () => {
     clearSession()
-    set({ token: null, user: null, companyId: null, permissions: new Set(), permissionsLoaded: false })
+    set({ token: null, user: null, permissions: new Set(), permissionsLoaded: false })
   },
 }})

packages/admin/src/types/account.ts

@@ -1,6 +1,5 @@
 export interface Account {
   id: string
-  companyId: string
   accountNumber: string | null
   name: string
   primaryMemberId: string | null
@@ -25,7 +24,6 @@ export interface Account {
 export interface Member {
   id: string
   accountId: string
-  companyId: string
   memberNumber: string | null
   firstName: string
   lastName: string
@@ -42,7 +40,6 @@ export interface Member {
 export interface ProcessorLink {
   id: string
   accountId: string
-  companyId: string
   processor: 'stripe' | 'global_payments'
   processorCustomerId: string
   isActive: boolean
@@ -52,7 +49,6 @@ export interface ProcessorLink {
 export interface PaymentMethod {
   id: string
   accountId: string
-  companyId: string
   processor: 'stripe' | 'global_payments'
   processorPaymentMethodId: string
   cardBrand: string | null
@@ -67,7 +63,6 @@ export interface PaymentMethod {
 export interface MemberIdentifier {
   id: string
   memberId: string
-  companyId: string
   type: 'drivers_license' | 'passport' | 'school_id'
   label: string | null
   value: string
@@ -85,7 +80,6 @@ export interface MemberIdentifier {
 export interface TaxExemption {
   id: string
   accountId: string
-  companyId: string
   status: 'none' | 'pending' | 'approved'
   certificateNumber: string
   certificateType: string | null

packages/admin/src/types/repair.ts

@@ -1,6 +1,5 @@
 export interface RepairTicket {
   id: string
-  companyId: string
   locationId: string | null
   repairBatchId: string | null
   ticketNumber: string | null
@@ -42,7 +41,6 @@ export interface RepairLineItem {
 
 export interface RepairBatch {
   id: string
-  companyId: string
   locationId: string | null
   batchNumber: string | null
   accountId: string
@@ -80,7 +78,6 @@ export interface RepairNote {
 
 export interface RepairServiceTemplate {
   id: string
-  companyId: string
   name: string
   instrumentType: string | null
   size: string | null