Stream delimited output and render terminal-aware tables

[codeforester]

Parent: #50

Train position: 15 of 22
Phase: P2 — Operational completeness

Problem

Delimited rendering materializes records and terminal tables do not account for display width, Unicode, large cells, or control sequences.

Acceptance criteria

• CSV and TSV consume one-pass iterables without materializing all records.
• Redirected output stays header/footer/ANSI-free and follows documented column, header, and cell rules.
• Terminal tables account for terminal width, Unicode display width, empty data, large cells, and control-sequence safety with a deterministic fallback.
• Large-generator and TTY/non-TTY tests prove bounded memory and stable output.

Dependencies

• Define stable structured-log, JSON output, and JSON error contracts #63