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/083_stripe_connect.sql

@@ -1,140 +0,0 @@
--- Migration 083: Add stripe_user_id support to payment_settings for Stripe Connect
--- This enables Stripe Connect Express account onboarding
-
--- First, add stripe_user_id column to payment_settings table if it doesn't exist
-DO $$
-BEGIN
-  IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'payment_settings' AND column_name = 'stripe_user_id') THEN
-    ALTER TABLE payment_settings ADD COLUMN stripe_user_id TEXT;
-  END IF;
-END $$;
-
--- Update upsert_payment_settings to support stripe_user_id
-CREATE OR REPLACE FUNCTION public.upsert_payment_settings(
-  p_brand_id                UUID,
-  p_provider                TEXT,
-  p_stripe_publishable_key   TEXT DEFAULT NULL,
-  p_stripe_secret_key       TEXT DEFAULT NULL,
-  p_stripe_user_id          TEXT DEFAULT NULL,
-  p_square_access_token     TEXT DEFAULT NULL,
-  p_square_location_id      TEXT DEFAULT NULL,
-  p_square_sync_enabled     BOOLEAN DEFAULT NULL,
-  p_square_inventory_mode   TEXT DEFAULT NULL
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-BEGIN
-  INSERT INTO payment_settings (
-    brand_id, provider,
-    stripe_publishable_key, stripe_secret_key, stripe_user_id,
-    square_access_token, square_location_id,
-    square_sync_enabled, square_inventory_mode
-  )
-  VALUES (
-    p_brand_id, p_provider,
-    p_stripe_publishable_key, p_stripe_secret_key, p_stripe_user_id,
-    p_square_access_token, p_square_location_id,
-    COALESCE(p_square_sync_enabled, false),
-    COALESCE(p_square_inventory_mode, 'none')
-  )
-  ON CONFLICT (brand_id) DO UPDATE SET
-    provider = COALESCE(p_provider, payment_settings.provider),
-    stripe_publishable_key = COALESCE(p_stripe_publishable_key, payment_settings.stripe_publishable_key),
-    stripe_secret_key = COALESCE(p_stripe_secret_key, payment_settings.stripe_secret_key),
-    stripe_user_id = COALESCE(p_stripe_user_id, payment_settings.stripe_user_id),
-    square_access_token = COALESCE(p_square_access_token, payment_settings.square_access_token),
-    square_location_id = COALESCE(p_square_location_id, payment_settings.square_location_id),
-    square_sync_enabled = COALESCE(p_square_sync_enabled, payment_settings.square_sync_enabled),
-    square_inventory_mode = COALESCE(p_square_inventory_mode, payment_settings.square_inventory_mode),
-    updated_at = now()
-  RETURNING jsonb_build_object(
-    'id', id,
-    'brand_id', brand_id,
-    'provider', provider,
-    'stripe_user_id', stripe_user_id,
-    'stripe_publishable_key', stripe_publishable_key,
-    'square_sync_enabled', square_sync_enabled,
-    'square_inventory_mode', square_inventory_mode,
-    'square_last_sync_at', square_last_sync_at,
-    'square_last_sync_error', square_last_sync_error
-  );
-END;
-$$;
-
--- Create function to get brand payment settings
-CREATE OR REPLACE FUNCTION public.get_payment_settings(
-  p_brand_id UUID
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-BEGIN
-  RETURN (
-    SELECT jsonb_build_object(
-      'id', id,
-      'brand_id', brand_id,
-      'provider', provider,
-      'stripe_publishable_key', stripe_publishable_key,
-      'stripe_secret_key', stripe_secret_key,
-      'stripe_user_id', stripe_user_id,
-      'square_access_token', square_access_token,
-      'square_location_id', square_location_id,
-      'square_sync_enabled', square_sync_enabled,
-      'square_inventory_mode', square_inventory_mode,
-      'square_last_sync_at', square_last_sync_at,
-      'square_last_sync_error', square_last_sync_error,
-      'updated_at', updated_at
-    )
-    FROM payment_settings
-    WHERE brand_id = p_brand_id
-  );
-END;
-$$;
-
--- Create function to set Stripe Connect account
-CREATE OR REPLACE FUNCTION public.set_stripe_connect_account(
-  p_brand_id UUID,
-  p_stripe_user_id TEXT
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-BEGIN
-  INSERT INTO payment_settings (brand_id, provider, stripe_user_id)
-  VALUES (p_brand_id, 'stripe', p_stripe_user_id)
-  ON CONFLICT (brand_id) DO UPDATE SET
-    stripe_user_id = p_stripe_user_id,
-    provider = 'stripe',
-    updated_at = now()
-  RETURNING jsonb_build_object(
-    'id', id,
-    'brand_id', brand_id,
-    'stripe_user_id', stripe_user_id,
-    'provider', provider
-  );
-END;
-$$;
-
--- Create function to disconnect Stripe Connect
-CREATE OR REPLACE FUNCTION public.disconnect_stripe_connect(
-  p_brand_id UUID
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-BEGIN
-  UPDATE payment_settings
-  SET
-    stripe_user_id = NULL,
-    stripe_publishable_key = NULL,
-    stripe_secret_key = NULL,
-    provider = 'manual',
-    updated_at = now()
-  WHERE brand_id = p_brand_id;
-  
-  RETURN jsonb_build_object('success', true, 'brand_id', p_brand_id);
-END;
-$$;
-
-NOTIFY pgrst, 'reload schema';