fix: use version-aware zip extraction on Windows (#563)

src/shared/index.ts

@@ -20,3 +20,4 @@ export * from "./opencode-config-dir"
 export * from "./opencode-version"
 export * from "./permission-compat"
 export * from "./external-plugin-detector"
+export * from "./zip-extractor"

src/shared/zip-extractor.ts

@@ -0,0 +1,83 @@
+import { spawn, spawnSync } from "bun"
+import { release } from "os"
+
+const WINDOWS_BUILD_WITH_TAR = 17134
+
+function getWindowsBuildNumber(): number | null {
+  if (process.platform !== "win32") return null
+  
+  const parts = release().split(".")
+  if (parts.length >= 3) {
+    const build = parseInt(parts[2], 10)
+    if (!isNaN(build)) return build
+  }
+  return null
+}
+
+function isPwshAvailable(): boolean {
+  if (process.platform !== "win32") return false
+  const result = spawnSync(["where", "pwsh"], { stdout: "pipe", stderr: "pipe" })
+  return result.exitCode === 0
+}
+
+function escapePowerShellPath(path: string): string {
+  return path.replace(/'/g, "''")
+}
+
+type WindowsZipExtractor = "tar" | "pwsh" | "powershell"
+
+function getWindowsZipExtractor(): WindowsZipExtractor {
+  const buildNumber = getWindowsBuildNumber()
+  
+  if (buildNumber !== null && buildNumber >= WINDOWS_BUILD_WITH_TAR) {
+    return "tar"
+  }
+  
+  if (isPwshAvailable()) {
+    return "pwsh"
+  }
+  
+  return "powershell"
+}
+
+export async function extractZip(archivePath: string, destDir: string): Promise<void> {
+  let proc
+  
+  if (process.platform === "win32") {
+    const extractor = getWindowsZipExtractor()
+    
+    switch (extractor) {
+      case "tar":
+        proc = spawn(["tar", "-xf", archivePath, "-C", destDir], {
+          stdout: "ignore",
+          stderr: "pipe",
+        })
+        break
+      case "pwsh":
+        proc = spawn(["pwsh", "-Command", `Expand-Archive -Path '${escapePowerShellPath(archivePath)}' -DestinationPath '${escapePowerShellPath(destDir)}' -Force`], {
+          stdout: "ignore",
+          stderr: "pipe",
+        })
+        break
+      case "powershell":
+      default:
+        proc = spawn(["powershell", "-Command", `Expand-Archive -Path '${escapePowerShellPath(archivePath)}' -DestinationPath '${escapePowerShellPath(destDir)}' -Force`], {
+          stdout: "ignore",
+          stderr: "pipe",
+        })
+        break
+    }
+  } else {
+    proc = spawn(["unzip", "-o", archivePath, "-d", destDir], {
+      stdout: "ignore",
+      stderr: "pipe",
+    })
+  }
+  
+  const exitCode = await proc.exited
+  
+  if (exitCode !== 0) {
+    const stderr = await new Response(proc.stderr).text()
+    throw new Error(`zip extraction failed (exit ${exitCode}): ${stderr}`)
+  }
+}