v1.1.0-dev26

Dev milestone build for testers.

Changes since v1.1.0-dev25:

• Redesigned Settings → Updates panel. Single primary button drives the full flow — Check Now → Checking → Download & Install → Downloading (progress fills the button background). Skip This Version is a small link under the install button when an update's available. Release notes moved to a collapsed "What's new" panel below the button that renders GitHub markdown inline (headings, bullets, bold, code, links) with a "View on GitHub" link at the bottom.
• Merged community PRs: #123 (bundled assets available offline in native mode, thanks @librarian) and #124 (pull-to-refresh sync + smarter connection banner, thanks @librarian).
• Icon halo cleared across favicon and in-app icon (About, Sidebar, Login, NativeSetup), cache-busted with the app version so redeploy alone shows the fix.
• Create Admin form fix (#122): password field no longer crushed, matching eye toggle on Confirm.
• SMTP "Username" field relabeled "Email or Username" to match how most providers actually authenticate.
• Docker CI speedup: frontend build pinned to native $BUILDPLATFORM on multi-arch builds, cutting GHA runtime roughly in half.