Add alert tools, mutes, short status, and backup summary

handlers/backup.py

@@ -37,6 +37,16 @@ def _sudo_cmd(cmd: list[str]) -> list[str]:
     return ["sudo", "-E"] + cmd
 
 
+def _format_backup_result(rc: int, out: str) -> str:
+    log_hint = "log: /var/log/backup-auto.log"
+    header = "✅ Backup finished" if rc == 0 else "❌ Backup failed"
+    lines = out.strip().splitlines()
+    body = "\n".join(lines[:20])
+    if len(lines) > 20:
+        body += f"\n… trimmed {len(lines) - 20} lines"
+    return f"{header} (rc={rc})\n{log_hint}\n\n{body}" if body else f"{header} (rc={rc})\n{log_hint}"
+
+
 def _load_json(raw: str, label: str) -> tuple[bool, object | None, str]:
     if not raw or not raw.strip():
         return False, None, f"? {label} returned empty output"
@@ -215,7 +225,7 @@ async def cmd_backup_now(msg: Message):
                 use_restic_env=True,
                 timeout=6 * 3600,
             )
-            await msg.answer(("✅ OK\n" if rc == 0 else "❌ FAIL\n") + out, reply_markup=backup_kb)
+            await msg.answer(_format_backup_result(rc, out), reply_markup=backup_kb)
         finally:
             release_lock("backup")