init push

backend/store/pg/migration/000009_create_stat_pages.up.sql

@@ -0,0 +1,18 @@
+-- create table stats_pages for 24-hour retention
+CREATE TABLE IF NOT EXISTS stat_pages (
+    id BIGSERIAL PRIMARY KEY,
+    kb_id TEXT NOT NULL,
+    node_id TEXT NOT NULL,
+    user_id TEXT,
+    session_id TEXT,
+    scene INT NOT NULL,
+    ip TEXT,
+    ua TEXT,
+    browser_name TEXT,
+    browser_os TEXT,
+    referer TEXT,
+    referer_host TEXT,
+    created_at timestamptz NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_stat_pages_kb_id_node_id ON stat_pages(kb_id, node_id);