chore(supabase): full purge — remove all Supabase references from codebase

- Delete supabase/ directory (config.toml, push-migrations.js,
  ADMIN_CREATE_STOP_FIX.sql, 137 archived migration files)
- Remove @supabase/ssr and @supabase/supabase-js from package.json
- Strip *.supabase.co from next.config.ts image hostnames
- Strip https://*.supabase.co from vercel.json CSP connect-src
- Remove 'supabase/**' ignore from eslint.config.mjs
- Clean supabase references from src/lib/db.ts, vitest.config.ts,
  db/seeds/2026-tuxedo-tour-stops.sql, src/actions/storefront.ts,
  scripts/import-tuxedo-stops.ts comments
- Rewrite env-var docs in README, ENVIRONMENT, PRODUCTION_SETUP,
  PRODUCTION_DEPLOYMENT_CHECKLIST, LAUNCH_CHECKLIST, CLAUDE,
  MEMORY, REPORT to drop NEXT_PUBLIC_SUPABASE_URL /
  SUPABASE_SERVICE_ROLE_KEY / supabase link / supabase CLI references

The canonical migration runner is now scripts/migrate.js (uses pg
directly via DATABASE_URL). Migrations live in db/migrations/. The
Supabase CLI is no longer in the codebase. The only remaining
'@supabase/*' in the dep tree is @supabase/auth-js as a transitive
of @neondatabase/auth (Neon Auth / Better Auth).

Final source scan: grep -rln '@supabase\|rest/v1\|supabase\.co'
src/ tests/ db/ scripts/ next.config.ts vercel.json eslint.config.mjs
package.json returns zero. Verification: npm install clean
(11 added, 21 removed, 12 changed), tsc shows same 17 pre-existing
errors (Stripe dahlia API version + fetch preconnect mocks),
vitest 172/175 (3 pre-existing failures in getAdminUser.test.ts),
lint shows same 14 pre-existing errors. Live-tested: dev server
boots in 248ms, public storefronts (/) (/login) (/pricing) (/tuxedo)
(/indian-river-direct) all return 200; /admin/v2?demo=1 reaches 200
after dev_session redirect; storefront renders real brand content.

supabase/migrations/.archived/050_wholesale_online_payment.sql

@@ -1,78 +0,0 @@
--- Migration 050: Wholesale Online Payment
--- - Adds checkout_session_id and payment_intent_id to wholesale_orders
--- - Adds record_wholesale_payment RPC for Stripe webhook to call
-
-BEGIN;
-
--- ── 1. Add Stripe payment tracking columns ───────────────────────────────────
-ALTER TABLE public.wholesale_orders
-  ADD COLUMN IF NOT EXISTS checkout_session_id TEXT,
-  ADD COLUMN IF NOT EXISTS stripe_payment_intent_id TEXT;
-
--- ── 2. RPC: Record a Stripe payment against a wholesale order ─────────────────
-DROP FUNCTION IF EXISTS public.record_wholesale_payment(UUID, NUMERIC, TEXT);
-CREATE OR REPLACE FUNCTION public.record_wholesale_payment(
-  p_order_id           UUID DEFAULT NULL,
-  p_amount             NUMERIC DEFAULT NULL,
-  p_stripe_payment_intent_id TEXT DEFAULT NULL
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-DECLARE
-  v_order RECORD;
-  v_new_paid NUMERIC(10,2);
-BEGIN
-  -- Fetch current order state
-  SELECT id, subtotal, deposit_paid, deposit_required, balance_due
-  INTO v_order
-  FROM wholesale_orders
-  WHERE id = p_order_id;
-
-  IF NOT FOUND THEN
-    RETURN jsonb_build_object('success', false, 'error', 'Order not found');
-  END IF;
-
-  -- Compute new deposit_paid before the update so balance_due uses the correct value
-  v_new_paid := v_order.deposit_paid + p_amount;
-
-  -- Record the payment in the deposits table
-  INSERT INTO wholesale_deposits (wholesale_order_id, amount, payment_method, reference, recorded_by)
-  VALUES (
-    p_order_id,
-    p_amount,
-    'stripe',
-    p_stripe_payment_intent_id,
-    auth.uid()
-  );
-
-  -- Update order
-  UPDATE wholesale_orders
-  SET
-    deposit_paid      = v_new_paid,
-    balance_due       = GREATEST(subtotal - v_new_paid, 0),
-    payment_status    = CASE
-      WHEN subtotal - v_new_paid <= 0 THEN 'paid'
-      ELSE 'partial'
-    END,
-    stripe_payment_intent_id = COALESCE(p_stripe_payment_intent_id, stripe_payment_intent_id),
-    updated_at        = now()
-  WHERE id = p_order_id;
-
-  -- Advance status from awaiting_deposit if deposit now covers requirement
-  UPDATE wholesale_orders
-  SET status = 'pending'
-  WHERE id = p_order_id
-    AND status = 'awaiting_deposit'
-    AND v_new_paid >= deposit_required;
-
-  RETURN jsonb_build_object(
-    'success', true,
-    'new_balance_due', GREATEST(v_order.subtotal - v_new_paid, 0)
-  );
-END;
-$$;
-
-COMMIT;
-
-NOTIFY pgrst, 'reload schema';