feat(core,fuse,gui,cli): restore to this computer per device

ListDeviceRestorableFolders and RestoreDeviceFolders read another
registered device's folders and attach them with that device's share,
without changing this machine's cached device. The Computers page moves
restore into each computer's menu, and pdfs sync restore takes --device.

crates/pdfs-cli/src/main.rs

@@ -655,6 +655,10 @@ enum SyncCmd {
         /// Accept every proposed local path without asking.
         #[arg(long)]
         yes: bool,
+        /// Restore another computer's folders instead, by device uid (from
+        /// `pdfs devices list`).
+        #[arg(long)]
+        device: Option<String>,
     },
 }
 
@@ -991,7 +995,7 @@ fn cmd_sync(action: SyncCmd) -> Result<()> {
         SyncCmd::Mode { id, mode } => {
             ok_or_bail(control_request(CtlRequest::SetSyncFolderMode { id, mode })?)?
         }
-        SyncCmd::Restore { yes } => return cmd_sync_restore(yes),
+        SyncCmd::Restore { yes, device } => return cmd_sync_restore(yes, device),
     }
     Ok(())
 }
@@ -1075,8 +1079,13 @@ fn cmd_sync_queue() -> Result<()> {
 /// The daemon only ever *proposes* local paths — a path recorded by another
 /// machine may name a home directory that does not exist here — so the default
 /// flow is propose-and-confirm. `--yes` accepts the proposals for scripting.
-fn cmd_sync_restore(yes: bool) -> Result<()> {
-    let response = control_request(CtlRequest::ListRestorableFolders)?;
+fn cmd_sync_restore(yes: bool, device: Option<String>) -> Result<()> {
+    let response = control_request(match &device {
+        Some(device) => CtlRequest::ListDeviceRestorableFolders {
+            device: device.clone(),
+        },
+        None => CtlRequest::ListRestorableFolders,
+    })?;
     if emit_json(&response)? {
         return Ok(());
     }
@@ -1126,8 +1135,12 @@ fn cmd_sync_restore(yes: bool) -> Result<()> {
         println!("Nothing selected.");
         return Ok(());
     }
-    ok_or_bail(control_request(CtlRequest::RestoreSyncFolders {
-        items: chosen,
+    ok_or_bail(control_request(match device {
+        Some(device) => CtlRequest::RestoreDeviceFolders {
+            device,
+            items: chosen,
+        },
+        None => CtlRequest::RestoreSyncFolders { items: chosen },
     })?)
 }