Hard-tab cursor optimization breaks column alignment in View() output

## Bug Description
The v2 cursor optimization that replaces space runs with hard tabs silently breaks column alignment in `View()` output. `relativeCursorMove()` in `screen.go` treats "clear" cells as tab candidates, breaking space-based column alignment.

## Expected Behavior
Tab compression should not alter the visual layout of space-based column alignment.

## Suggested Fix
Add `tea.WithHardTabs(false)` option or restrict tab compression to renderer-internal output only.

Related to #1614.

Start in screen.go at relativeCursorMove() and reproduce the View() output described in the issue, checking how clear cells become hard-tab candidates. Compare the behavior with related issue #1614; done means tab compression no longer changes the visual layout of space-based column alignment.

Written by the indexing model from the issue text.