Jesse Vincent e0442fba00 fix(brainstorm-server): ignore macOS resource-fork dotfiles ...

On macOS (and ExFAT/SMB volumes) the OS writes ._<name>.html sidecar files
holding binary resource-fork metadata. These end with .html, so they passed the
content filter and could be picked as the newest screen — serving binary garbage
to the browser instead of the mockup — or fetched via /files/.

Skip dotfiles (leading '.') at all four sites that list or serve content:
getNewestScreen, the /files/ endpoint, the known-files seed, and the fs.watch
handler. Tests cover serving (/ and /files/) and the watch path (a ._ file must
not trigger a reload).

Refs #950

2026-06-09 15:02:25 -07:00

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