Improve batch result report and error summary UX

[saidutt46]

Summary

The batch mode output (especially with --all checking 1,300+ TLDs) can produce very long, hard-to-scan result lists. The current output is functional but could benefit from better organization and visual hierarchy.

Current Behavior

When running large checks like domain-check mybrand --all --pretty --batch, the output can show hundreds of domains in flat lists under Available/Taken/Unknown sections, with a compact error summary at the bottom:

── Unknown (434) ──────────────────────────────────────
    mybrand.aaa                   (error)
    mybrand.abc                   (network error)
    ... (434 lines)

1201 domains in 4.9s  |  720 available  |  2 taken  |  479 unknown

  Some domains could not be checked:
  • 196 network errors: mybrand.circle, mybrand.loan, ...
  • 283 other errors: mybrand.chintai, mybrand.lgbt, ...

Desired Improvements

• Collapsible/paginated sections — for sections with many entries, show first N with a "... and X more" summary
• Error categorization in grouped output — group unknowns by error type (network, timeout, unknown TLD) instead of a flat list
• Summary-first layout — show the summary bar at the top for quick scan, then details below
• Available-domain focus — for large scans, consider showing only available domains by default (like tldx's --only-available)
• TLD grouping — group results by TLD category or alphabetically by TLD for better scanning
• Column alignment — ensure domain names and status align cleanly even with very long domain names

Context

With universal TLD coverage (1,300+ TLDs via IANA bootstrap), --all mode now produces much larger result sets than the original 32 TLDs. The display logic needs to scale better for these larger outputs.

Related

• Issue Make prettified output even prettifyier #17 (original pretty mode implementation)
• --all with bootstrap produces 1,300+ results per base name