feat(dashboard): add a Linear launcher and group the navigator by row sizes

I added a Linear entry to the launcher table, keyed l, with the nf-oct-issue_tracks octicon, opening the issue list via linear-emacs-list-issues. That makes 13 launchers, which no longer divides into the old rigid 4-per-row grid.

So I replaced the fixed chunk-by-4 with an explicit cj/dashboard--row-sizes (4 4 3 2) and reordered the table so Telegram comes before Slack, putting Slack and Linear together on the last row. The button shape moved into cj/dashboard--navigator-button, shared by the grouped loop and a fallback row for any launchers the sizes don't cover. A test pins the row sizes to the launcher count so they can't drift.

0 files changed, 0 insertions, 0 deletions