refactor(db): replace sqlc with handwritten pgx repos

- Finish Paddle-to-Stripe billing migration; drop paddle/stripe libs
- Renumber migrations; add 00012 memberships+manage_token,
  00013 location_type_capacity
- Add tests: admin, auth, bookings customer service
- Remove graphify-out artifacts and stale env files

Authored By: TDvorak <[email protected]>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

apps/backend/migrations/00010_sms.sql

@@ -0,0 +1,45 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS tenant_sms_settings (
+  tenant_id uuid PRIMARY KEY REFERENCES tenants(id) ON DELETE CASCADE,
+  enabled boolean NOT NULL DEFAULT false,
+  sender_name text NOT NULL DEFAULT '',
+  monthly_limit integer,
+  stripe_subscription_item_id text,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  updated_at timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE IF NOT EXISTS sms_usage_logs (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+  recipient_phone text NOT NULL,
+  message_body text NOT NULL,
+  external_message_id text,
+  external_request_id text,
+  status text NOT NULL DEFAULT 'pending',
+  cost_cents integer NOT NULL DEFAULT 150,
+  sent_at timestamptz,
+  created_at timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE IF NOT EXISTS sms_monthly_reports (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+  year_month text NOT NULL,
+  message_count integer NOT NULL DEFAULT 0,
+  total_cost_cents integer NOT NULL DEFAULT 0,
+  stripe_invoice_id text,
+  invoice_sent_at timestamptz,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  UNIQUE (tenant_id, year_month)
+);
+
+CREATE INDEX IF NOT EXISTS idx_sms_usage_tenant_created ON sms_usage_logs (tenant_id, created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_sms_reports_tenant ON sms_monthly_reports (tenant_id, year_month DESC);
+
+-- +goose Down
+DROP INDEX IF EXISTS idx_sms_reports_tenant;
+DROP INDEX IF EXISTS idx_sms_usage_tenant_created;
+DROP TABLE IF EXISTS sms_monthly_reports;
+DROP TABLE IF EXISTS sms_usage_logs;
+DROP TABLE IF EXISTS tenant_sms_settings;