Attempt text reflow in scroll mode to avoid narrow-pane mid-word wraps

[guysmoilov]

Problem

Scrollback captured from a very narrow terminal can contain hard wraps that split words, making scroll mode hard to read on mobile.

Proposal

In scroll mode, attempt a reflow/readability pass so lines render for the current viewport width where feasible, instead of preserving narrow-pane visual wraps verbatim.

Notes

This should be best-effort and must avoid corrupting semantics for cases where exact spacing/alignment is important (tables/code blocks).

Scope

• Investigate whether reflow can be derived from available scrollback format
• Apply reflow only in scroll mode presentation layer
• Provide fallback to raw rendering when safe reflow is not possible

Acceptance Criteria

• Plain prose output becomes more readable in wider scroll mode views
• Mid-word narrow-wrap artifacts are reduced when feasible
• Raw rendering fallback remains available for non-reflow-safe content
• Tests cover at least one reflowed case and one fallback case