feat: Borg-Archivhistorie je Host abfragen

app.py

@@ -603,6 +603,28 @@ async def backup_break_lock(hostname: str, _=Depends(_verify)):
     return {"status": "lock_broken", "hostname": hostname, "detail": out.strip()[-4000:]}
 
 
+@app.get("/backup/history/{hostname}")
+async def backup_history(hostname: str, _=Depends(_verify)):
+    """Return the ten newest Borg archives for one inventory host."""
+    host = await asyncio.to_thread(_find_inventory_host, hostname)
+    if not host or host["name"].startswith("node"):
+        return JSONResponse({"error": "inventory host not found"}, status_code=404)
+    rc, out, err = await asyncio.to_thread(
+        _ssh, f'{host["user"]}@{host["ip"]}',
+        "sudo -n borgmatic list --last 10 --json", 120
+    )
+    if rc != 0:
+        return JSONResponse(
+            {"error": "borg list failed", "hostname": hostname,
+             "stdout": out[-4000:], "stderr": err[-4000:]}, status_code=500
+        )
+    try:
+        history = json.loads(out)
+    except (TypeError, ValueError):
+        return JSONResponse({"error": "invalid borg JSON", "hostname": hostname}, status_code=500)
+    return {"hostname": hostname, "history": history}
+
+
 @app.get("/backup/run-status/{hostname}")
 async def backup_run_status(hostname: str, _=Depends(_verify)):
     """Lightweight current backup service state and recent logs."""