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/048_wholesale_enabled.sql

@@ -1,62 +0,0 @@
--- Migration 048: Add wholesale_enabled to wholesale_settings + update upsert RPC
--- Allows admins to enable/disable the Wholesale Portal per brand.
-
-BEGIN;
-
--- Add wholesale_enabled column
-ALTER TABLE public.wholesale_settings
-  ADD COLUMN IF NOT EXISTS wholesale_enabled BOOLEAN NOT NULL DEFAULT true;
-
--- Update upsert function to handle wholesale_enabled
-DROP FUNCTION IF EXISTS public.upsert_wholesale_settings(
-  UUID, UUID, UUID, BOOLEAN, NUMERIC, BOOLEAN, BOOLEAN, TEXT, TEXT, TEXT, TEXT
-);
-
-CREATE OR REPLACE FUNCTION public.upsert_wholesale_settings(
-  p_brand_id               UUID DEFAULT NULL,
-  p_portal_page_id         UUID DEFAULT NULL,
-  p_price_sheet_page_id    UUID DEFAULT NULL,
-  p_require_approval        BOOLEAN DEFAULT NULL,
-  p_min_order_amount       NUMERIC DEFAULT NULL,
-  p_online_payment_enabled BOOLEAN DEFAULT NULL,
-  p_wholesale_enabled      BOOLEAN DEFAULT NULL,
-  p_pickup_location        TEXT DEFAULT NULL,
-  p_fob_location           TEXT DEFAULT NULL,
-  p_from_email             TEXT DEFAULT NULL,
-  p_invoice_business_name  TEXT DEFAULT NULL
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-BEGIN
-  INSERT INTO wholesale_settings (
-    brand_id, portal_page_id, price_sheet_page_id,
-    require_approval, min_order_amount, online_payment_enabled,
-    wholesale_enabled, pickup_location, fob_location, from_email, invoice_business_name
-  )
-  VALUES (
-    p_brand_id, p_portal_page_id, p_price_sheet_page_id,
-    COALESCE(p_require_approval, true),
-    p_min_order_amount, COALESCE(p_online_payment_enabled, false),
-    COALESCE(p_wholesale_enabled, true),
-    p_pickup_location, p_fob_location, p_from_email, p_invoice_business_name
-  )
-  ON CONFLICT (brand_id) DO UPDATE SET
-    portal_page_id           = COALESCE(p_portal_page_id, wholesale_settings.portal_page_id),
-    price_sheet_page_id      = COALESCE(p_price_sheet_page_id, wholesale_settings.price_sheet_page_id),
-    require_approval         = COALESCE(p_require_approval, wholesale_settings.require_approval),
-    min_order_amount         = COALESCE(p_min_order_amount, wholesale_settings.min_order_amount),
-    online_payment_enabled   = COALESCE(p_online_payment_enabled, wholesale_settings.online_payment_enabled),
-    wholesale_enabled        = COALESCE(p_wholesale_enabled, wholesale_settings.wholesale_enabled),
-    pickup_location          = COALESCE(p_pickup_location, wholesale_settings.pickup_location),
-    fob_location             = COALESCE(p_fob_location, wholesale_settings.fob_location),
-    from_email               = COALESCE(p_from_email, wholesale_settings.from_email),
-    invoice_business_name    = COALESCE(p_invoice_business_name, wholesale_settings.invoice_business_name),
-    updated_at               = now()
-  RETURNING jsonb_build_object('success', true);
-END;
-$$;
-
-COMMIT;
-
-NOTIFY pgrst, 'reload schema';