feat(backups): добавить S3-хранилище и обновить экран бэкапов

Сохранять снимки в S3-compatible бакет, скачивать и удалять их вместе с локальными файлами.
Привести /backups к DNA /servers: Frame, KPI, фильтры и реальное восстановление.

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

backend/src/db/schema.ts

@@ -420,6 +420,22 @@ export const backupScheduleSettings = pgTable("backup_schedule_settings", {
   updatedAt:      ts("updated_at").notNull().defaultNow(),
 })
 
+export const backupStorageSettings = pgTable("backup_storage_settings", {
+  id:                 idSingleton(),
+  provider:           text("provider", { enum: ["local", "s3"] }).notNull().default("local"),
+  s3Endpoint:         text("s3_endpoint").notNull().default(""),
+  s3Region:           text("s3_region").notNull().default("us-east-1"),
+  s3Bucket:           text("s3_bucket").notNull().default(""),
+  s3Prefix:           text("s3_prefix").notNull().default("mikrotik"),
+  s3AccessKeyId:      text("s3_access_key_id").notNull().default(""),
+  s3SecretAccessKey:  text("s3_secret_access_key").notNull().default(""),
+  s3ForcePathStyle:   boolean("s3_force_path_style").notNull().default(true),
+  keepLocalCopy:      boolean("keep_local_copy").notNull().default(true),
+  lastTestAt:         ts("last_test_at"),
+  lastTestError:      text("last_test_error"),
+  updatedAt:          ts("updated_at").notNull().defaultNow(),
+})
+
 export const backupEntries = pgTable("backup_entries", {
   id:         text("id").primaryKey(),
   serverId:   bigint("server_id", { mode: "number" })
@@ -429,6 +445,10 @@ export const backupEntries = pgTable("backup_entries", {
   sizeBytes:  bigint("size_bytes", { mode: "number" }).notNull(),
   kind:       text("kind", { enum: ["manual", "auto"] }).notNull().default("manual"),
   notes:      text("notes"),
+  storage:    text("storage", { enum: ["local", "s3", "both"] }).notNull().default("local"),
+  s3Key:      text("s3_key"),
+  s3Etag:     text("s3_etag"),
+  uploadError: text("upload_error"),
   createdAt:  ts("created_at").notNull(),
 }, (t) => [
   uniqueIndex("idx_backup_entries_filename").on(t.filename),

backend/src/db/sqlite-import.ts

@@ -81,6 +81,12 @@ const TABLES: TableCopy[] = [
     ["server_ids_json", "json"], ["last_run_at", "ts"], ["last_duration_ms", "int"],
     ["last_error", "text"], ["updated_at", "ts"],
   ]},
+  { table: "backup_storage_settings", upsert: true, columns: [
+    ["id", "int"], ["provider", "text"], ["s3_endpoint", "text"], ["s3_region", "text"],
+    ["s3_bucket", "text"], ["s3_prefix", "text"], ["s3_access_key_id", "text"],
+    ["s3_secret_access_key", "text"], ["s3_force_path_style", "bool"], ["keep_local_copy", "bool"],
+    ["last_test_at", "ts"], ["last_test_error", "text"], ["updated_at", "ts"],
+  ]},
   { table: "internet_path_settings", upsert: true, columns: [
     ["id", "int"], ["enabled", "bool"], ["interval_sec", "int"], ["retention_days", "int"],
     ["last_collected_at", "ts"], ["last_duration_ms", "int"], ["last_error", "text"],