v0.5.1

TUI usability patch — makes long output (notably the /consult report) readable.
TUI-only; the agent loop, providers, persistence, and crypto are unchanged.

Added

• Conversation scrollback. Scroll the history line-by-line with ↑/↓, by page
  with PgUp/PgDn, and to the top/bottom with Home/End. The pane follows the
  tail by default and snaps back to the newest content on a new/streaming reply.

Fixed

• Tall messages were truncated. A single message taller than the pane (e.g. a
  MAGI consult report) previously showed only its tail with no way to scroll up; it
  is now fully reachable via the new scrollback.
• Markdown/table indentation was lost. wrap_message now returns a fitting line
  unchanged, preserving leading indentation and internal alignment spaces (bullets,
  ASCII tables, box-drawing). Wrapping is measured in terminal display columns, so
  CJK/emoji (2-column) glyphs no longer wrap a column early.
• Long prompts were cut off at the right border. The input box now grows (up to
  6 rows) and wraps long/multi-line prompts instead of truncating them.

Known limitations

• wrap_message still collapses internal whitespace when reflowing a line that is
  wider than the terminal (word-boundary wrap); fitting lines are untouched. Mid-
  prompt cursor placement in an input taller than 6 rows is approximate (exact while
  typing at the end).

Full Changelog: v0.5.0...v0.5.1