Expand description
Cross-session input history for the TUI input box (↑/↓ recall).
Stored as one line per submitted user input in $ATOMCODE_HOME/input_history.txt,
append-only, capped at MAX_ENTRIES. Unlike conversation messages, entries
are plain strings with no role/tool structure — this is purely a UX aid for
recalling past text, not for restoring conversation context.
Multi-line inputs are encoded by escaping \\ → \\\\ and \n → \\n so
each entry occupies exactly one line on disk.