fix: dbt-tools bundle copies 220MB of unused .node native binaries

[anandgupta42]

Problem

The copyAssets() function in publish.ts uses cp -r ../dbt-tools/dist which copies the entire dist directory. After bun build, that directory contains ~220MB of @altimateai/altimate-core .node native binaries that bun copies as transitive build artifacts — but dbt-tools never loads them.

Component	Size	Needed?
index.js	860 KB	Yes
altimate_python_packages/	2.2 MB	Yes
5 .node native binaries	220 MB	No

Fix

Copy only index.js and altimate_python_packages/ instead of the entire dist directory.

Credit: @suryaiyer95 (PR #316 comment)