v2.3.1 CLI improvements

What's New

rcdb run — single-run report for a given run number (like on website but in console)

• rcdb run <run> — show a run's time span, conditions, and files
• rcdb <run> — shortcut for rcdb run <run>
• -i/--info — only the start - end line
• -c/--conditions — only conditions (no title)
• -f/--files — only files (no title)

rcdb file — inspect stored config/log files

• rcdb file vers <name> — list a file's versions as hash - last run
• rcdb file cat <name> <run> / --hash=<hash> — dump one version's content (pipe-friendly)
• rcdb file runs <name> — per-run versions (run - hash); supports --run-min/-max/--run/--run-period, --asc/--desc, --limit
• rcdb file ls [run|range|period] — all files for given runs, as hash - name
• rcdb file search <pattern> — find file names by substring (case-insensitive)