feat(db): перевести хранилище с SQLite на PostgreSQL

При старте backend накатывает схему PostgreSQL 18 и, если база пустая, один раз импортирует mikrotik.db с тома. Повторный старт не копирует данные. Бэкап в UI идёт через pg_dump.

Co-authored-by: Cursor <[email protected]>

backend/scripts/inventory-sqlite.mjs

@@ -0,0 +1,39 @@
+import Database from "better-sqlite3"
+import fs from "node:fs"
+
+const path = process.argv[2] ?? "./mikrotik.db"
+if (!fs.existsSync(path)) {
+  console.error("NO_SQLITE", path)
+  process.exit(2)
+}
+const st = fs.statSync(path)
+const db = new Database(path, { readonly: true, fileMustExist: true })
+const tables = db
+  .prepare(`SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%' ORDER BY 1`)
+  .all()
+console.log("FILE_BYTES", st.size)
+console.log("TABLES", tables.length)
+for (const t of tables) {
+  const c = db.prepare(`SELECT COUNT(*) AS c FROM "${t.name}"`).get()
+  console.log(`COUNT\t${t.name}\t${c.c}`)
+}
+try {
+  const d = db.prepare(`SELECT COUNT(*) AS c FROM (
+    SELECT dedupe_key FROM alert_outbox GROUP BY dedupe_key HAVING COUNT(*) > 1
+  )`).get()
+  console.log("DUP_DEDUPE_KEYS", d.c)
+} catch (e) {
+  console.log("DUP_DEDUPE_ERR", e instanceof Error ? e.message : e)
+}
+for (const [label, sql] of [
+  ["ORPHAN_FLOW_MINUTE", `SELECT COUNT(*) c FROM flow_minute_stats s WHERE s.server_id NOT IN (SELECT id FROM servers)`],
+  ["ORPHAN_FLOW_BUCKETS", `SELECT COUNT(*) c FROM flow_buckets s WHERE s.server_id NOT IN (SELECT id FROM servers)`],
+  ["ORPHAN_BINDINGS", `SELECT COUNT(*) c FROM user_interface_bindings s WHERE s.server_id NOT IN (SELECT id FROM servers)`],
+]) {
+  try {
+    console.log(label, db.prepare(sql).get().c)
+  } catch (e) {
+    console.log(label + "_ERR", e instanceof Error ? e.message : e)
+  }
+}
+db.close()