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/085_brand_settings.sql

@@ -1,154 +0,0 @@
--- Migration 085: Brand Settings Table
--- Single source of truth for brand/company information.
--- Used by email templates, invoices, site headers, and all brand-facing output.
-
-CREATE TABLE IF NOT EXISTS public.brand_settings (
-  id                    UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-  brand_id              UUID NOT NULL REFERENCES brands(id) ON DELETE CASCADE,
-
-  -- Company info
-  legal_business_name   TEXT,
-  phone                 TEXT,
-  email                 TEXT,
-  website_url           TEXT,
-
-  -- Address
-  street_address        TEXT,
-  city                  TEXT,
-  state                 TEXT,
-  postal_code           TEXT,
-  country               TEXT DEFAULT 'US',
-
-  -- Logos (Supabase Storage public URLs)
-  logo_url              TEXT,
-  logo_url_dark         TEXT,   -- For dark backgrounds (optional)
-
-  -- Branding for emails/invoices
-  default_email_signature TEXT,
-  invoice_footer_notes    TEXT,
-
-  -- Meta
-  created_at            TIMESTAMPTZ NOT NULL DEFAULT now(),
-  updated_at            TIMESTAMPTZ NOT NULL DEFAULT now()
-);
-
-CREATE UNIQUE INDEX IF NOT EXISTS brand_settings_brand_idx
-  ON public.brand_settings (brand_id);
-
-ALTER TABLE public.brand_settings ENABLE ROW LEVEL SECURITY;
-
--- Brand admins and platform admins can manage their own settings
-CREATE POLICY brand_admin_manage_brand_settings ON public.brand_settings
-  FOR ALL
-  USING (
-    EXISTS (
-      SELECT 1 FROM admin_users au
-      WHERE au.user_id = auth.uid()
-        AND au.brand_id = brand_settings.brand_id
-        AND au.role IN ('brand_admin', 'platform_admin')
-    )
-  );
-
--- Read policy: brand admins + platform admins can read
-CREATE POLICY brand_admin_read_brand_settings ON public.brand_settings
-  FOR SELECT
-  USING (
-    EXISTS (
-      SELECT 1 FROM admin_users au
-      WHERE au.user_id = auth.uid()
-        AND au.brand_id = brand_settings.brand_id
-    )
-  );
-
--- ── RPCs ─────────────────────────────────────────────────────────────────────
-
-CREATE OR REPLACE FUNCTION public.get_brand_settings(p_brand_id UUID)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-DECLARE
-  v_result JSONB;
-BEGIN
-  SELECT jsonb_build_object(
-    'id', bs.id,
-    'brand_id', bs.brand_id,
-    'legal_business_name', bs.legal_business_name,
-    'phone', bs.phone,
-    'email', bs.email,
-    'website_url', bs.website_url,
-    'street_address', bs.street_address,
-    'city', bs.city,
-    'state', bs.state,
-    'postal_code', bs.postal_code,
-    'country', bs.country,
-    'logo_url', bs.logo_url,
-    'logo_url_dark', bs.logo_url_dark,
-    'default_email_signature', bs.default_email_signature,
-    'invoice_footer_notes', bs.invoice_footer_notes,
-    'updated_at', bs.updated_at,
-    'brand_name', b.name
-  )
-  INTO v_result
-  FROM brand_settings bs
-  JOIN brands b ON b.id = bs.brand_id
-  WHERE bs.brand_id = p_brand_id;
-
-  RETURN COALESCE(v_result, jsonb_build_object('brand_id', p_brand_id, 'brand_name', (
-    SELECT name FROM brands WHERE id = p_brand_id
-  )));
-END;
-$$;
-
-CREATE OR REPLACE FUNCTION public.upsert_brand_settings(
-  p_brand_id               UUID,
-  p_legal_business_name    TEXT DEFAULT NULL,
-  p_phone                  TEXT DEFAULT NULL,
-  p_email                  TEXT DEFAULT NULL,
-  p_website_url            TEXT DEFAULT NULL,
-  p_street_address         TEXT DEFAULT NULL,
-  p_city                   TEXT DEFAULT NULL,
-  p_state                  TEXT DEFAULT NULL,
-  p_postal_code            TEXT DEFAULT NULL,
-  p_country                 TEXT DEFAULT NULL,
-  p_logo_url              TEXT DEFAULT NULL,
-  p_logo_url_dark          TEXT DEFAULT NULL,
-  p_default_email_signature TEXT DEFAULT NULL,
-  p_invoice_footer_notes   TEXT DEFAULT NULL
-)
-RETURNS JSONB
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
-AS $$
-DECLARE
-  v_id UUID;
-BEGIN
-  INSERT INTO brand_settings (
-    brand_id, legal_business_name, phone, email, website_url,
-    street_address, city, state, postal_code, country,
-    logo_url, logo_url_dark, default_email_signature, invoice_footer_notes
-  ) VALUES (
-    p_brand_id, p_legal_business_name, p_phone, p_email, p_website_url,
-    p_street_address, p_city, p_state, p_postal_code, p_country,
-    p_logo_url, p_logo_url_dark, p_default_email_signature, p_invoice_footer_notes
-  )
-  ON CONFLICT (brand_id) DO UPDATE SET
-    legal_business_name    = COALESCE(p_legal_business_name, brand_settings.legal_business_name),
-    phone                  = COALESCE(p_phone, brand_settings.phone),
-    email                  = COALESCE(p_email, brand_settings.email),
-    website_url            = COALESCE(p_website_url, brand_settings.website_url),
-    street_address         = COALESCE(p_street_address, brand_settings.street_address),
-    city                   = COALESCE(p_city, brand_settings.city),
-    state                  = COALESCE(p_state, brand_settings.state),
-    postal_code            = COALESCE(p_postal_code, brand_settings.postal_code),
-    country                = COALESCE(p_country, brand_settings.country),
-    logo_url               = COALESCE(p_logo_url, brand_settings.logo_url),
-    logo_url_dark          = COALESCE(p_logo_url_dark, brand_settings.logo_url_dark),
-    default_email_signature = COALESCE(p_default_email_signature, brand_settings.default_email_signature),
-    invoice_footer_notes   = COALESCE(p_invoice_footer_notes, brand_settings.invoice_footer_notes),
-    updated_at             = now()
-  WHERE brand_settings.brand_id = p_brand_id
-  RETURNING id INTO v_id;
-
-  -- Return the updated record
-  RETURN get_brand_settings(p_brand_id);
-END;
-$$;