diff --git a/supabase/migrations/20250301_add_corp_hub_schema.sql b/supabase/migrations/20250301_add_corp_hub_schema.sql
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+-- CORP: Enterprise Client Portal Schema
+-- For invoicing, contracts, team management, and reporting
+
+-- ============================================================================
+-- INVOICES & BILLING
+-- ============================================================================
+
+create table if not exists public.corp_invoices (
+  id uuid primary key default gen_random_uuid(),
+  client_company_id uuid not null references public.user_profiles(id) on delete cascade,
+  invoice_number text not null unique,
+  project_id uuid,
+  description text,
+  issue_date date not null default now(),
+  due_date date not null,
+  amount_due numeric(12, 2) not null,
+  amount_paid numeric(12, 2) not null default 0,
+  status text not null default 'draft' check (status in ('draft', 'sent', 'viewed', 'paid', 'overdue', 'cancelled')),
+  currency text not null default 'USD',
+  notes text,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create index if not exists corp_invoices_client_idx on public.corp_invoices (client_company_id);
+create index if not exists corp_invoices_status_idx on public.corp_invoices (status);
+create index if not exists corp_invoices_due_date_idx on public.corp_invoices (due_date);
+create index if not exists corp_invoices_number_idx on public.corp_invoices (invoice_number);
+
+-- Invoice Line Items
+create table if not exists public.corp_invoice_items (
+  id uuid primary key default gen_random_uuid(),
+  invoice_id uuid not null references public.corp_invoices(id) on delete cascade,
+  description text not null,
+  quantity numeric(10, 2) not null default 1,
+  unit_price numeric(12, 2) not null,
+  amount numeric(12, 2) not null,
+  category text, -- 'service', 'product', 'license', etc.
+  created_at timestamptz not null default now()
+);
+
+create index if not exists corp_invoice_items_invoice_idx on public.corp_invoice_items (invoice_id);
+
+-- Payments received on invoices
+create table if not exists public.corp_invoice_payments (
+  id uuid primary key default gen_random_uuid(),
+  invoice_id uuid not null references public.corp_invoices(id) on delete cascade,
+  amount_paid numeric(12, 2) not null,
+  payment_date date not null default now(),
+  payment_method text not null default 'bank_transfer', -- 'stripe', 'bank_transfer', 'check', etc.
+  reference_number text,
+  notes text,
+  created_at timestamptz not null default now()
+);
+
+create index if not exists corp_invoice_payments_invoice_idx on public.corp_invoice_payments (invoice_id);
+
+-- ============================================================================
+-- CONTRACTS & AGREEMENTS
+-- ============================================================================
+
+create table if not exists public.corp_contracts (
+  id uuid primary key default gen_random_uuid(),
+  client_company_id uuid not null references public.user_profiles(id) on delete cascade,
+  vendor_id uuid not null references public.user_profiles(id) on delete cascade,
+  contract_name text not null,
+  contract_type text not null check (contract_type in ('service', 'retainer', 'license', 'nda', 'other')),
+  description text,
+  start_date date,
+  end_date date,
+  contract_value numeric(12, 2),
+  status text not null default 'draft' check (status in ('draft', 'pending_approval', 'signed', 'active', 'completed', 'terminated', 'archived')),
+  document_url text, -- URL to signed document
+  signed_at timestamptz,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create index if not exists corp_contracts_client_idx on public.corp_contracts (client_company_id);
+create index if not exists corp_contracts_vendor_idx on public.corp_contracts (vendor_id);
+create index if not exists corp_contracts_status_idx on public.corp_contracts (status);
+
+-- Contract Milestones
+create table if not exists public.corp_contract_milestones (
+  id uuid primary key default gen_random_uuid(),
+  contract_id uuid not null references public.corp_contracts(id) on delete cascade,
+  milestone_name text not null,
+  description text,
+  due_date date,
+  deliverables text,
+  status text not null default 'pending' check (status in ('pending', 'in_progress', 'completed', 'blocked')),
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create index if not exists corp_contract_milestones_contract_idx on public.corp_contract_milestones (contract_id);
+
+-- ============================================================================
+-- TEAM COLLABORATION
+-- ============================================================================
+
+create table if not exists public.corp_team_members (
+  id uuid primary key default gen_random_uuid(),
+  company_id uuid not null references public.user_profiles(id) on delete cascade,
+  user_id uuid not null references public.user_profiles(id) on delete cascade,
+  role text not null check (role in ('owner', 'admin', 'member', 'viewer')),
+  email text not null,
+  full_name text,
+  job_title text,
+  status text not null default 'active' check (status in ('active', 'inactive', 'pending_invite')),
+  invited_at timestamptz,
+  joined_at timestamptz,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now(),
+  unique(company_id, user_id)
+);
+
+create index if not exists corp_team_members_company_idx on public.corp_team_members (company_id);
+create index if not exists corp_team_members_user_idx on public.corp_team_members (user_id);
+
+-- Activity Log (for audit trail)
+create table if not exists public.corp_activity_log (
+  id uuid primary key default gen_random_uuid(),
+  company_id uuid not null references public.user_profiles(id) on delete cascade,
+  actor_id uuid not null references public.user_profiles(id) on delete cascade,
+  action text not null, -- 'created_invoice', 'sent_contract', 'paid_invoice', etc.
+  resource_type text, -- 'invoice', 'contract', 'team_member'
+  resource_id uuid,
+  metadata jsonb,
+  ip_address text,
+  user_agent text,
+  created_at timestamptz not null default now()
+);
+
+create index if not exists corp_activity_log_company_idx on public.corp_activity_log (company_id);
+create index if not exists corp_activity_log_actor_idx on public.corp_activity_log (actor_id);
+create index if not exists corp_activity_log_created_idx on public.corp_activity_log (created_at desc);
+
+-- ============================================================================
+-- PROJECTS & TRACKING
+-- ============================================================================
+
+create table if not exists public.corp_projects (
+  id uuid primary key default gen_random_uuid(),
+  client_company_id uuid not null references public.user_profiles(id) on delete cascade,
+  project_name text not null,
+  description text,
+  status text not null default 'active' check (status in ('planning', 'active', 'paused', 'completed', 'archived')),
+  budget numeric(12, 2),
+  spent numeric(12, 2) default 0,
+  start_date date,
+  end_date date,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create index if not exists corp_projects_client_idx on public.corp_projects (client_company_id);
+create index if not exists corp_projects_status_idx on public.corp_projects (status);
+
+-- ============================================================================
+-- ANALYTICS & REPORTING
+-- ============================================================================
+
+create table if not exists public.corp_financial_summary (
+  id uuid primary key default gen_random_uuid(),
+  company_id uuid not null unique references public.user_profiles(id) on delete cascade,
+  period_start date not null,
+  period_end date not null,
+  total_invoiced numeric(12, 2) default 0,
+  total_paid numeric(12, 2) default 0,
+  total_overdue numeric(12, 2) default 0,
+  active_contracts int default 0,
+  completed_contracts int default 0,
+  total_contract_value numeric(12, 2) default 0,
+  average_payment_days int,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create index if not exists corp_financial_summary_company_idx on public.corp_financial_summary (company_id);
+
+-- ============================================================================
+-- RLS POLICIES
+-- ============================================================================
+
+alter table public.corp_invoices enable row level security;
+alter table public.corp_invoice_items enable row level security;
+alter table public.corp_invoice_payments enable row level security;
+alter table public.corp_contracts enable row level security;
+alter table public.corp_contract_milestones enable row level security;
+alter table public.corp_team_members enable row level security;
+alter table public.corp_activity_log enable row level security;
+alter table public.corp_projects enable row level security;
+alter table public.corp_financial_summary enable row level security;
+
+-- Invoices: client and team members can view
+create policy "Invoices visible to client and team" on public.corp_invoices
+  for select using (
+    auth.uid() = client_company_id or
+    exists(select 1 from public.corp_team_members where company_id = client_company_id and user_id = auth.uid())
+  );
+
+create policy "Client creates invoices" on public.corp_invoices
+  for insert with check (auth.uid() = client_company_id);
+
+create policy "Client manages invoices" on public.corp_invoices
+  for update using (auth.uid() = client_company_id);
+
+-- Contracts: parties involved can view
+create policy "Contracts visible to involved parties" on public.corp_contracts
+  for select using (
+    auth.uid() = client_company_id or auth.uid() = vendor_id or
+    exists(select 1 from public.corp_team_members where company_id = client_company_id and user_id = auth.uid())
+  );
+
+-- Team: company members can view
+create policy "Team members visible to company" on public.corp_team_members
+  for select using (
+    auth.uid() = company_id or
+    exists(select 1 from public.corp_team_members where company_id = company_id and user_id = auth.uid())
+  );
+
+-- Activity: company members can view
+create policy "Activity visible to company" on public.corp_activity_log
+  for select using (
+    exists(select 1 from public.corp_team_members where company_id = company_id and user_id = auth.uid())
+  );
+
+-- ============================================================================
+-- TRIGGERS
+-- ============================================================================
+
+create or replace function public.set_updated_at()
+returns trigger as $$
+begin
+  new.updated_at = now();
+  return new;
+end;
+$$ language plpgsql;
+
+create trigger corp_invoices_set_updated_at before update on public.corp_invoices for each row execute function public.set_updated_at();
+create trigger corp_contracts_set_updated_at before update on public.corp_contracts for each row execute function public.set_updated_at();
+create trigger corp_contract_milestones_set_updated_at before update on public.corp_contract_milestones for each row execute function public.set_updated_at();
+create trigger corp_team_members_set_updated_at before update on public.corp_team_members for each row execute function public.set_updated_at();
+create trigger corp_projects_set_updated_at before update on public.corp_projects for each row execute function public.set_updated_at();
+create trigger corp_financial_summary_set_updated_at before update on public.corp_financial_summary for each row execute function public.set_updated_at();
+
+-- ============================================================================
+-- COMMENTS
+-- ============================================================================
+
+comment on table public.corp_invoices is 'Invoices issued by the company to clients';
+comment on table public.corp_invoice_items is 'Line items on invoices';
+comment on table public.corp_invoice_payments is 'Payments received on invoices';
+comment on table public.corp_contracts is 'Contracts with vendors and clients';
+comment on table public.corp_team_members is 'Team members with access to the hub';
+comment on table public.corp_activity_log is 'Audit trail of all activities';
+comment on table public.corp_projects is 'Client projects for tracking work';
+comment on table public.corp_financial_summary is 'Financial summary and metrics';