Version 3.1.8 includes a ~1-GB .git folder and other development files

The package version 3.1.8 is exceptionally large (over 1 GB) compared to previous versions. It looks like a .git folder was mistakenly included in the /app/ folder and installed, which is nearly 1 GB in size. A number of other development files/folders were also installed into that folder.

Inspect the packaging process for version 3.1.8 and compare the published package contents with previous versions. Verify the /app/ folder and package no longer include the .git directory or other development files, and confirm the resulting package size is substantially reduced.

Written by the indexing model from the issue text.