fix(clean): use find to recursively remove dist and node_modules

[nnabeyang]

Summary

This PR fixes the behavior of the make clean target in the Makefile.
Previously, make clean used:

rm -rf **/dist **/node_packages

However:

• The pattern did not consistently match nested dist and node_modules directories across environments and shells (e.g., shells without globstar enabled).
• There is no directory named node_packages in this repository — the intended directory is node_modules. A quick find . -type d -name "node_packages" returned no results.

As a result, make clean did not remove many of the expected build artifacts as intended.

What Changed

• Replaced the glob-based removal with a find command that reliably locates all matching directories and deletes them:

find . -type d \( -name "dist" -o -name "node_modules" \) -prune -exec rm -rf {} +

• Verified with find that the expected directories (dist and node_modules, including nested ones) are identified before deletion.

Why This Matters

• The glob pattern previously used depends on shell configuration (e.g., globstar) and may silently fail in some environments.
• The earlier pattern also referenced a non-existent directory (node_packages), meaning some intended removals were never happening.
• The new implementation works consistently across shells and ensures that all intended dist and node_modules dirs are cleaned.

Verification

Before applying the change, the set of directories reported by:

find . -type d \( -name "dist" -o -name "node_modules" \) -prune -print

matched expectations in workspace layouts with nested packages. After removal, those directories are indeed deleted.

Additionally, running:

find . -type d -name "node_packages"

returned no results, confirming that the previous pattern was referring to a non-existent directory.

Impact

This only affects the make clean target: no other build behavior or code functionality is affected.