fix(player): fix go build ldflags parsing on Windows

Split "-ldflags=-s -w" into separate "-ldflags" and "-s -w" args
so that "-w" is not misinterpreted as a go build flag when shell
mode is enabled on Windows.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/player/scripts/tasks.ts

@@ -54,7 +54,8 @@ export async function buildServerTask() {
   await runCommand("go", [
     "build",
     "-trimpath",
-    "-ldflags=-s -w",
+    "-ldflags",
+    "-s -w",
     "-o",
     SERVER_BINARY_PATH,
     "./cmd/server",