Normalize line length across all linters

[ineedjet]

Problem

Line length limits are inconsistently configured across linters:

Linter	Current limit
ruff	160
RuboCop Layout/LineLength	160
yamllint	disabled
pymarkdown MD013	disabled
shellcheck	no rule

160 chars dates from aligning ruff with RuboCop. With modern wide monitors and common patterns like long URLs, Tailwind class lists, i18n strings, and Rails routes, even 160 can be constraining without adding value.

Proposal

1. Pick a single canonical limit and apply it everywhere it's configurable
2. Consider raising it (e.g. 200 or disabling entirely for code, keeping disabled for prose)
3. Document the chosen limit and rationale in LINTERS-DEFAULTS-OVERRIDES.md

Affected configs

• config/ruff.toml — line-length
• config/rubocop.yml — Layout/LineLength: Max
• config/yamllint.yml — already disabled, keep as-is
• config/pymarkdown.json — MD013 already disabled, keep as-is