Add website view analytics for dashboard traffic charts.

Track storefront views via POST /tenants/{domain}/analytics/views, expose business activity API, and add product/website/portfolio/blog 30-day chart types for super-admin selection.

Co-authored-by: Cursor <cursoragent@cursor.com>

database/migrations/069_website_content_views.sql

@@ -0,0 +1,18 @@
+DO $$
+BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'website_view_kind') THEN
+    CREATE TYPE website_view_kind AS ENUM ('website', 'product', 'portfolio', 'blog');
+  END IF;
+END $$;
+
+CREATE TABLE IF NOT EXISTS website_content_views (
+  id          BIGSERIAL PRIMARY KEY,
+  business_id BIGINT NOT NULL REFERENCES businesses (id) ON DELETE CASCADE,
+  view_kind   website_view_kind NOT NULL,
+  entity_id   BIGINT,
+  page_path   TEXT,
+  viewed_at   TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_website_content_views_business_kind_time
+  ON website_content_views (business_id, view_kind, viewed_at DESC);