fix(shared): emit PowerShell zip entries as json lines

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/shared/zip-entry-listing/powershell-zip-entry-listing.ts

@@ -4,6 +4,45 @@ import type { ArchiveEntry } from "../archive-entry-validator"
 
 export type PowerShellZipExtractor = "pwsh" | "powershell"
 
+type PowerShellZipEntryRecord = {
+	type: "file" | "directory" | "symlink"
+	name: string
+	target: string
+}
+
+function isPowerShellZipEntryRecord(value: unknown): value is PowerShellZipEntryRecord {
+	if (!value || typeof value !== "object") {
+		return false
+	}
+
+	const candidate = value as Record<string, unknown>
+	return (
+		(candidate.type === "file" || candidate.type === "directory" || candidate.type === "symlink") &&
+		typeof candidate.name === "string" &&
+		typeof candidate.target === "string"
+	)
+}
+
+export function parsePowerShellZipEntryLine(line: string): ArchiveEntry | null {
+	const parsedValue: unknown = JSON.parse(line)
+	if (!isPowerShellZipEntryRecord(parsedValue)) {
+		return null
+	}
+
+	if (parsedValue.type === "symlink") {
+		return {
+			path: parsedValue.name,
+			type: parsedValue.type,
+			linkPath: parsedValue.target,
+		}
+	}
+
+	return {
+		path: parsedValue.name,
+		type: parsedValue.type,
+	}
+}
+
 export async function listZipEntriesWithPowerShell(
 	archivePath: string,
 	escapePowerShellPath: (path: string) => string,
@@ -28,7 +67,7 @@ export async function listZipEntriesWithPowerShell(
 					"        try { $target = $reader.ReadToEnd() } finally { $reader.Dispose() }",
 					"      } finally { $stream.Dispose() }",
 					"    }",
-				"    Write-Output ($type + \"`t\" + $entry.FullName + \"`t\" + $target)",
+					"    Write-Output (ConvertTo-Json @{type=$type; name=$entry.FullName; target=$target} -Compress)",
 					"  }",
 					"} finally {",
 					"  $archive.Dispose()",
@@ -55,24 +94,6 @@ export async function listZipEntriesWithPowerShell(
 		.split(/\r?\n/)
 		.map(line => line.trim())
 		.filter(Boolean)
-		.map((line): ArchiveEntry | null => {
+		.map(line => parsePowerShellZipEntryLine(line))
-			const [type, entryPath, linkPath = ""] = line.split("\t")
-			if (type !== "file" && type !== "directory" && type !== "symlink") {
-				return null
-			}
-
-			if (type === "symlink") {
-				return {
-					path: entryPath,
-					type,
-					linkPath,
-				}
-			}
-
-			return {
-				path: entryPath,
-				type,
-			}
-		})
 		.filter((entry): entry is ArchiveEntry => entry !== null)
 }