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/src/modules/servers/mapper/servers-mapper.ts

@@ -1,29 +1,24 @@
+import { parseJsonArray } from "../../../db/json.js"
 import type { ServerRead, WanUplinkRead } from "../../../types/server.js"
 import type { ServerRow, SnapshotRow } from "../repository/servers-repository.js"
 
-function parseWanUplinksJson(raw: string | null | undefined): WanUplinkRead[] {
-  if (raw == null || raw === "") return []
-  try {
-    const data = JSON.parse(raw) as unknown
-    if (!Array.isArray(data)) return []
-    const out: WanUplinkRead[] = []
-    for (const row of data) {
-      if (typeof row !== "object" || row === null) continue
-      const r = row as Record<string, unknown>
-      out.push({
-        id: typeof r.id === "string" ? r.id : "",
-        name: typeof r.name === "string" ? r.name : "",
-        isp: typeof r.isp === "string" ? r.isp : "",
-        iface: typeof r.iface === "string" ? r.iface : "",
-        ip: typeof r.ip === "string" ? r.ip : "",
-        maxDl: typeof r.maxDl === "number" && Number.isFinite(r.maxDl) ? r.maxDl : 0,
-        maxUl: typeof r.maxUl === "number" && Number.isFinite(r.maxUl) ? r.maxUl : 0,
-      })
-    }
-    return out
-  } catch {
-    return []
+function parseWanUplinksJson(raw: unknown): WanUplinkRead[] {
+  const data = parseJsonArray(raw)
+  const out: WanUplinkRead[] = []
+  for (const row of data) {
+    if (typeof row !== "object" || row === null) continue
+    const r = row as Record<string, unknown>
+    out.push({
+      id: typeof r.id === "string" ? r.id : "",
+      name: typeof r.name === "string" ? r.name : "",
+      isp: typeof r.isp === "string" ? r.isp : "",
+      iface: typeof r.iface === "string" ? r.iface : "",
+      ip: typeof r.ip === "string" ? r.ip : "",
+      maxDl: typeof r.maxDl === "number" && Number.isFinite(r.maxDl) ? r.maxDl : 0,
+      maxUl: typeof r.maxUl === "number" && Number.isFinite(r.maxUl) ? r.maxUl : 0,
+    })
   }
+  return out
 }
 
 export function toServerRead(server: ServerRow, snap: SnapshotRow | undefined): ServerRead {