v1.44.0

Added

• Tutorials screen (/tutorials): nine step-by-step guides for the tricky
  parts — phone access with Tailscale, installing the app on the phone, home
  network access, AI providers, creating/exporting/importing characters,
  conversation branches, memories & summaries, customizing the chat, and your
  data & updates.
• Cards grouped by category with a search box; each guide opens in a dialog
  with numbered steps, tips and a button that jumps to the matching feature.
  Guides are bilingual (es/en) and directly linkable
  (/tutorials?t=branches).
• New Help section in the sidebar and a link from the welcome screen.

Changed

• /tutorials renders inside the app shell even before onboarding is finished,
  so the welcome-screen link works.