fix: zero copy to create a new Buffer (#916)

https://nodejs.org/docs/latest-v24.x/api/buffer.html#static-method-bufferfromarraybuffer-byteoffset-length

<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Chores**
* Optimized binary data handling to reduce memory copies and improve
performance.
* Preserves identical visible content while changing internal buffer
object identity — callers that rely on object identity (rather than
content) may observe differences.

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settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Signed-off-by: MK (fengmk2) <fengmk2@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: fengmk2

app/repository/DistRepository.ts

@@ -90,7 +90,9 @@ export class DistRepository {
   async readDistBytesToBuffer(dist: Dist): Promise<Buffer | undefined> {
     const bytes = await this.readDistBytes(dist);
     if (!bytes) return undefined;
-    return Buffer.isBuffer(bytes) ? bytes : Buffer.from(bytes);
+    // if bytes is Uint8Array, should use zero copy to create a new Buffer
+    // https://nodejs.org/docs/latest-v24.x/api/buffer.html#static-method-bufferfromarraybuffer-byteoffset-length
+    return Buffer.from(bytes.buffer, bytes.byteOffset, bytes.byteLength);
   }
 
   async readDistBytesToJSONBuilder(dist: Dist): Promise<JSONBuilder | undefined> {