P7: restore agent node type, agent heartbeat expiry, build-version injection, remove log/history/xray-metrics modules, optional sub port

- nodes: port node-type (traditional/agent) picker back from web-src into
  the embedded frontend; backend annotates NodeView.nodeType from
  agent_nodes bindings; fix agent-node update path (skip reachability
  probe and apiToken requirement for agent-managed nodes); restore i18n
  keys in all 13 locales; install command now uses the Gitea mirror
- jobs: expire agent-bound nodes whose agent_nodes.last_seen is older
  than max(3x heartbeat interval, 120s) = 180s; last_seen=0 (never
  registered) is left untouched; transitions reuse UpdateHeartbeat +
  node event broadcast
- config: GetBaseVersion honors ldflags-injected buildVersion; release
  builds inject 3.7.0-agent.1 so the panel no longer reports a phantom
  update against the Gitea release tag
- logger/server: remove the three log viewers (panel/xray/amneziawg),
  their API endpoints and the 10240-entry in-memory log buffer; file
  logging via lumberjack unchanged; tests assert via a new optional
  logger hook instead of the removed buffer
- server: remove system history and xray metrics modules end to end
  (endpoints, sampling appends in RefreshStatus, per-minute persist
  cron, gob snapshot/restore, XrayMetricsService); realtime status and
  per-node history are untouched
- settings: subPort may be 0/unset - subscription links are generated
  without a port while the subscription service keeps binding the
  default 2096; the settings form declares the cleared state via
  onNumber's new onClear option instead of snapping back to 1

internal/web/translation/id-ID.json

@@ -136,45 +136,6 @@
       "currentCommit": "Commit saat ini",
       "latestCommit": "Commit terbaru",
       "updateChannelChanged": "Kanal pembaruan diubah",
-      "systemHistoryTitle": "Riwayat Sistem",
-      "historyTitleCpu": "Penggunaan CPU",
-      "historyTitleMem": "Penggunaan Memori",
-      "historyTitleNetwork": "Bandwidth Jaringan",
-      "historyTitlePackets": "Paket Jaringan",
-      "historyTitleDisk": "I/O Disk",
-      "historyTitleOnline": "Klien Online",
-      "historyTitleLoad": "Rata-rata Beban Sistem (1 / 5 / 15 mnt)",
-      "historyTitleConnections": "Koneksi Aktif (TCP / UDP)",
-      "historyTitleDiskUsage": "Penggunaan Ruang Disk",
-      "historyTabBandwidth": "Bandwidth",
-      "historyTabPackets": "Paket",
-      "historyTabDisk": "Disk I/O",
-      "historyTabOnline": "Online",
-      "historyTabLoad": "Beban",
-      "historyTabConnections": "Koneksi",
-      "historyTabDiskUsage": "Penggunaan Disk",
-      "xrayMetricsTitle": "Metrik Xray",
-      "xrayTitleHeap": "Memori Heap Teralokasi",
-      "xrayTitleSys": "Memori Dicadangkan dari OS",
-      "xrayTitleObjects": "Objek Heap Aktif",
-      "xrayTitleGcCount": "Siklus GC Selesai",
-      "xrayTitleGcPause": "Durasi Jeda GC",
-      "xrayTitleObservatory": "Kesehatan Koneksi Keluar",
-      "xrayTabHeap": "Heap",
-      "xrayTabSys": "Sys",
-      "xrayTabObjects": "Objek",
-      "xrayTabGcCount": "Jumlah GC",
-      "xrayTabGcPause": "Jeda GC",
-      "xrayTabObservatory": "Observatorium",
-      "xrayMetricsDisabled": "Endpoint metrik Xray belum dikonfigurasi",
-      "xrayMetricsHint": "Tambahkan blok metrics tingkat atas ke konfigurasi xray dengan tag metrics_out dan listen 127.0.0.1:11111, lalu mulai ulang xray.",
-      "xrayObservatoryEmpty": "Belum ada data Observatory",
-      "xrayObservatoryHint": "Tambahkan blok observatory ke konfigurasi xray yang mencantumkan tag outbound untuk diuji, lalu mulai ulang xray.",
-      "xrayObservatoryTagPlaceholder": "Pilih outbound",
-      "xrayObservatoryAlive": "Aktif",
-      "xrayObservatoryDead": "Mati",
-      "xrayObservatoryLastSeen": "Terakhir terlihat",
-      "xrayObservatoryLastTry": "Percobaan terakhir",
       "connectionCount": "Statistik Koneksi",
       "ipAddresses": "Alamat IP",
       "toggleIpVisibility": "Alihkan visibilitas IP",
@@ -191,18 +152,6 @@
       "panelUpdateUnknownTitle": "Tidak dapat memastikan pembaruan selesai",
       "panelUpdateUnknownDesc": "Panel tidak melaporkan hasil tepat waktu. Muat ulang untuk memeriksa versi saat ini, atau periksa log server.",
       "dontRefresh": "Instalasi sedang berlangsung, harap jangan menyegarkan halaman ini",
-      "logs": "Log",
-      "accessLogs": "Log Akses",
-      "autoUpdate": "Pembaruan Otomatis",
-      "amneziawgLogs": "Log AmneziaWG",
-      "amneziawgHandshake": "Handshake Terakhir",
-      "amneziawgInterface": "Antarmuka",
-      "amneziawgInbound": "Inbound",
-      "amneziawgEndpoint": "Endpoint",
-      "amneziawgIdle": "Idle",
-      "amneziawgEvents": "Peristiwa",
-      "amneziawgNoPeers": "Tidak ada peer AmneziaWG yang aktif",
-      "amneziawgNoEvents": "Belum ada peristiwa AmneziaWG yang tercatat",
       "config": "Konfigurasi",
       "backupTitle": "Cadangan & Pulihkan",
       "exportDatabase": "Cadangkan",
@@ -219,25 +168,14 @@
       "importDatabasePgDesc": "Klik untuk memilih dan mengunggah cadangan PostgreSQL (.dump), basis data SQLite (.db), atau dump migrasi SQLite guna memulihkan basis data Anda. Ini menggantikan semua data saat ini.",
       "migrationDownload": "Unduh migrasi",
       "migrationDownloadPgDesc": "Klik untuk mengunduh basis data SQLite .db yang dibuat dari data PostgreSQL Anda, siap menjalankan panel ini di SQLite.",
-      "avg": "rerata",
-      "peak": "puncak",
       "free": "tersisa",
       "openSockets": "soket terbuka",
       "throughputSub": "Total antarmuka",
-      "avgWindow": "Rerata periode",
       "healthWarm": "{list} — mulai tinggi",
       "healthCritical": "{list} — kritis",
       "panel": "Panel",
       "threads": "Thread",
       "uptime": "Waktu aktif",
-      "logLevelDebug": "Debug",
-      "logLevelInfo": "Info",
-      "logLevelNotice": "Notice",
-      "logLevelWarning": "Warning",
-      "logLevelError": "Error",
-      "accessDirect": "DIRECT",
-      "accessBlocked": "BLOCKED",
-      "accessProxy": "PROXY",
       "importKeepHostSettings": "Pertahankan pengaturan mesin ini",
       "importKeepHostSettingsDesc": "Mempertahankan alamat dengar, port, path dasar, sertifikat, dan identitas node panel ini alih-alih mengambilnya dari berkas yang diunggah."
     },
@@ -970,7 +908,19 @@
       "pinnedCertPlaceholder": "SHA-256 base64 atau hex",
       "fetchPin": "Ambil",
       "pinFetched": "Berhasil mengambil sertifikat node saat ini",
-      "pinFetchFailed": "Tidak dapat mengambil sertifikat"
+      "pinFetchFailed": "Tidak dapat mengambil sertifikat",
+      "nodeType": "Node Type",
+      "nodeTypeTraditional": "Traditional Panel Node",
+      "nodeTypeAgent": "Agent Lightweight Node",
+      "agentHint": "Agent nodes connect out to the master; no address, port or API token needed. An install command is generated on creation.",
+      "agentTokenTitle": "Agent Node Setup",
+      "agentTokenCreated": "Node {{name}} created successfully",
+      "agentTokenHint": "Copy the command below and run it on the node machine. This token is shown only once!",
+      "agentTokenInstructions": "The command downloads the installer, configures the master URL and token. The node comes online in ~30s.",
+      "agentTokenCopied": "Install command copied",
+      "agentTokenCopyFailed": "Copy failed, please copy manually",
+      "copyToken": "Copy Install Command",
+      "agentMasterUrlHint": "Master URL (used by agent to reach the master; change to public address if behind proxy):"
     },
     "settings": {
       "defaultTag": "Bawaan",
@@ -1725,4 +1675,4 @@
     "noIpRecord": "❗ Tidak ada Catatan IP!"
   },
   "email": {}
-}
+}