Follow-up to c3ba81a, which deleted federal.html but missed the file
edits (the prior git add aborted on a pathspec error). This commit
carries the real changes: remove the zddc-server + install sections and
all server discussion from the landing page; lead with "runs in your
browser, files never leave your machine, start with Browse now"; give
each tool card a bulleted feature list; lay the three cards out
all-across or all-stacked via a shared .tools-grid. In the reference,
remove Section 10 (server bootstrap), renumber Tools to 10, and
de-couple Section 9's layout/workflow from server machinery.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>