fix(sdk): shorten bundled Python resource paths on Windows

python/sdk-runtime/runtime-bootstrap.mjs

@@ -1,6 +1,7 @@
 #!/usr/bin/env node
 /** Private entry owned by the Python single-file runtime packaging. */
 import { registerHooks } from 'node:module'
+import { dirname, join } from 'node:path'
 import { isSea } from 'node:sea'
 import { fileURLToPath, pathToFileURL } from 'node:url'
 
@@ -30,7 +31,8 @@ if (aclRunner !== undefined && process.argv[2] === aclRunner) {
 } else if (selection === undefined) {
   if (isSea()) {
     // Carrier default stays separate so process/home environment and profile patches can override it.
-    process.env.DSH_BUNDLED_PRIMARY_RUNTIME = `${process.execPath.replace(/\.exe$/i, '')}-resources/primary-runtime`
+    const platform = process.platform === 'darwin' ? 'macos' : process.platform === 'win32' ? 'win' : process.platform
+    process.env.DSH_BUNDLED_PRIMARY_RUNTIME = join(dirname(process.execPath), `${platform}-${process.arch}`, 'primary-runtime')
   }
   const { runCli } = await import('@deepseek-ai/dsh/lib/bin.js')
   await runCli()