Fix cache list command in CI workflow

Only attempt cache deletion if exists (#26124)

Enable ccache within CI (#26121)

Resolve 'using serial compilation of 2 LTRANS jobs' warning (#26113)

Fix userspace detection in Makefile (#26117)

[CI] Format code according to conventions (#26108)

Added new pttbutton keyboard (#25952)

Detect PRs bypassing DD changes (#26094)

Explain how to use STORE_SETUPS and PRINT_SETUPS (#26070)

QMK avoids raw line breaks within paragraphs in Markdown (#26080)

Fix pointing device driver typo (#26091)

License violations updates. (#26076)

Remove use of andstor/file-existence-action (#26078)

Bump geekyeggo/delete-artifact from 5 to 6 (#26077)

Honor BUILD_DIR in mass_compile.py (#25586)