v0.2.7

• Code blocks in messages. Paste a fenced ```code block``` or inline `code` and it now renders in a monospace block instead of a single run-on line — makes sharing scripts and config actually usable.
• Non-image file attachments. Messages can now include documents, archives, and code/script files, not just images — gated per-server (see v0.2.8 above for how). Non-image attachments show as a downloadable file chip instead of a broken image preview.
• Fixed the instance theme picker being a hard-to-read grid of buttons — now a proper dropdown.
• Fixed poor text contrast in dropdown menus across all four themes, most noticeably on the Hacker theme.
• Fixed illegible initials on the currently-selected server icon under the Hacker theme when no custom icon is set.