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client/windows-helpers/README.md

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+# Windows Client Tooling Setup
+
+This folder holds helpers you run on the Windows host that will be pulled by the Proxmox orchestrator.
+
+## 1. Prerequisites on Windows
+- Run PowerShell with Administrative privileges.
+- Ensure OpenSSH.Client is available (Windows ships with it by default on modern builds).
+- Copy a portable `rsync.exe` (and its DLLs) to `windows-helpers/assets/rsync.zip` so the setup script can expand it into `C:\BackupClient\bin`.
+
+## 2. Run the helper
+1. Open PowerShell in this folder.
+2. Execute `.uild\setup_openssh_rsync.ps1` (adjust path if you copy the scripts elsewhere) with optional parameters:
+   ```powershell
+   .\setup_openssh_rsync.ps1 -InstallDir C:\BackupClient -RsyncZipPath .\assets\rsync.zip
+   ```
+3. The script:
+   - installs/starts the OpenSSH Server feature, sets `sshd` to auto-start and opens port 22.
+   - creates `C:\BackupClient` and copies the `rsync` binary into `C:\BackupClient\bin`.
+
+## 3. Post-setup checks
+- `sshd` should be running (`Get-Service sshd`).
+- The firewall rule `BackupClient SSH` allows inbound TCP 22 on private/domain networks.
+- From the Proxmox server, `ssh backupuser@<windows_ip>` succeeds and the `rsync.exe` inside `C:\BackupClient\bin` can be invoked.
+
+## 4. Notes
+- Keep the `rsync.exe` bundle in the installer so the orchestrator can invoke `rsync --server` over SSH.
+- Store any helper scripts and configuration files near the packaged client so the scheduler toggle and future automation can find them.