Requirements#

These requirements describe intended behaviour. They are not implementation or security certification claims.

• Provide independently usable Rust native graphical, terminal and command-line clients.
• Keep the clients independently installable and releasable from HyperNet.
• Use documented interfaces without direct access to server databases or secrets.
• Keep page viewing separate from mail, transfers and service authorisation.
• Render declarative pages without a browser engine or script execution.
• Treat page text, filenames, errors and media as untrusted input.
• Generate terminal control sequences only from trusted renderer operations.
• Support optional Kitty, iTerm2 and Sixel graphics with readable text fallbacks.
• Bound media decoding, output size, terminal queries and rendering work.
• Require explicit actions for downloads, external links and SSH sessions.
• Provide safe plain-text output for limited terminals and redirected commands.
• Keep credentials scoped to the selected network, identity and operation.
• Explain storage placement, offline delivery and privacy choices clearly.
• Default Private mailboxes to persistent storage only on user-selected systems.
• Keep Linux as the initial platform family while preserving portable interfaces.