- chat.SanitizeHTML/SanitizePlain decoded-then-escape text runs, so HTML
entities the browser emits (e.g. for the space after a mention chip,
or & for a typed "&") no longer render as literal " "/"&".
Re-escaping keeps output XSS-safe. Adds regression tests.
- Rename ./volumes -> ./.volumes so `go build/vet/test ./...` skip the mongo
data dir (700-perm files); Makefile lint now gofmt's tracked files only.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>