v0.13.0

Onboarding unblocked, the DISPLAY became a universal loader, and the
agent gained self-configuration. Driven by live mobile/desktop smoke
testing and on-chain feedback.

Fixed

• Onboarding was fully blocked. Registration cost was 50 LH and the
  only way to get LH (daily claim) was reverting, so new users couldn't
  claim a subdomain. Registration is now free (registrationCost set to 0
  on-chain) and the disliked daily-claim UI was removed; the credit token
  • facets stay on-chain for a future streaming model.
• Rustlite host::state_get typed Void. Module-elided host calls
  (host::state_get, or bare state_get after use host::display;) now
  resolve to their real return type, so stateful cartridges/games compile.
• Tool-call "running" status stuck after completion — removed; the
  streaming spinner is the working indicator.
• In-app feedback loader failed to decode (eth_getLogs returns an
  array but the RPC result was typed String).
• Mobile chat now top-aligns with consistent padding; terminal send/stop
  button squares up on the right.

Added

• DISPLAY renders HTML. A framebuffer HTML rasterizer (render_html
  tool + click-to-render .html files) — block-level text, monochrome,
  no DOM/iframe. The 5x7 font gained lowercase + punctuation.
• Cartridge persistence. run_cartridge auto-saves to cartridge.rl;
  .rl files compile+run on click.
• agent.json config manifest — single source of truth for the custom
  system prompt + tool allowlist, with a configure_agent tool so the
  agent can edit its own config (reset-to-default supported). Golden tools
  (finish, ask_question, configure_agent) can never be disabled.
• Persistent DISPLAY tab; play/stop terminal button; a "Stopped — what
  should I do instead?" prompt on cancel; loading spinner.

Changed

• "agent" rail/tab renamed to "agents"; removed the send-$localharness
  modal; submit_feedback keeps feedback under the 2048-byte on-chain cap
  with a clear message; the agent knows the real internal filenames
  (history is .lh_history.json).