인기 페이지 통계와 추천 사이트 메타데이터 추가 v1.5.9

db/migrations/039_page_analytics_and_navigation_recommended_metadata.sql

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+CREATE TABLE IF NOT EXISTS page_analytics_daily (
+  day DATE NOT NULL,
+  page_id UUID NOT NULL REFERENCES pages(id) ON DELETE CASCADE,
+  views INTEGER NOT NULL DEFAULT 0,
+  visitors INTEGER NOT NULL DEFAULT 0,
+  engaged_views INTEGER NOT NULL DEFAULT 0,
+  total_engaged_seconds INTEGER NOT NULL DEFAULT 0,
+  scroll_25 INTEGER NOT NULL DEFAULT 0,
+  scroll_50 INTEGER NOT NULL DEFAULT 0,
+  scroll_75 INTEGER NOT NULL DEFAULT 0,
+  scroll_100 INTEGER NOT NULL DEFAULT 0,
+  PRIMARY KEY (day, page_id)
+);
+
+CREATE INDEX IF NOT EXISTS page_analytics_daily_day_idx
+  ON page_analytics_daily (day DESC);
+
+ALTER TABLE analytics_daily_visitors
+  ADD COLUMN IF NOT EXISTS page_id UUID REFERENCES pages(id) ON DELETE CASCADE;
+
+ALTER TABLE analytics_daily_visitors
+  DROP CONSTRAINT IF EXISTS analytics_daily_visitors_scope_check;
+
+ALTER TABLE analytics_daily_visitors
+  ADD CONSTRAINT analytics_daily_visitors_scope_check CHECK (scope IN ('site', 'post', 'page'));
+
+CREATE UNIQUE INDEX IF NOT EXISTS analytics_daily_visitors_page_uidx
+  ON analytics_daily_visitors (day, page_id, visitor_hash)
+  WHERE scope = 'page';
+
+ALTER TABLE analytics_active_sessions
+  ADD COLUMN IF NOT EXISTS page_id UUID REFERENCES pages(id) ON DELETE SET NULL,
+  ADD COLUMN IF NOT EXISTS page_slug TEXT NOT NULL DEFAULT '';
+
+ALTER TABLE navigation_items
+  ADD COLUMN IF NOT EXISTS description_text TEXT NOT NULL DEFAULT '',
+  ADD COLUMN IF NOT EXISTS thumbnail_url TEXT NOT NULL DEFAULT '';