fix: revert double-quoting of SSH background spawn paths

The earlier fix incorrectly passed expandTildeForSSH paths (already quoted)
to buildSpawnCommand which quotes again via shellQuote, breaking redirects.

Raw paths are correct - buildSpawnCommand handles quoting internally.

Author: ethanndickson

src/node/runtime/SSHRuntime.ts

@@ -334,11 +334,11 @@ export class SSHRuntime implements Runtime {
     const wrapperScript = wrapperParts.join(" && ");
 
     // Use shared buildSpawnCommand for parity with Local
-    // Pass expanded paths so tilde is resolved (buildSpawnCommand quotes them)
+    // Pass raw paths - buildSpawnCommand uses shellQuote internally
     const spawnCommand = buildSpawnCommand({
       wrapperScript,
-      stdoutPath: stdoutPathExpanded,
-      stderrPath: stderrPathExpanded,
+      stdoutPath,
+      stderrPath,
       niceness: options.niceness,
     });