Twenty of letter-canvas's twenty-eight input()s are $localize labels that no
caller ever binds. Inline nineteen of them as template i18n, using the same
ids and source text so messages.en.xlf does not change. recipientText stays
an input() because its message embeds a literal \n, which as template text
becomes a different source string to Angular's extractor.
Extract letter-line.component.ts for the #line template plus the
label/auto/state/sample helpers it needs, replacing letter-canvas's three
ngTemplateOutlet incantations with one tag each. Its helpers are exported
pure functions with a spec, no TestBed.
The file stays over the 250-line budget (77 lines of CSS plus one letter's
markup), so the eslint-disable max-lines directive stays too, with its
reason rewritten to say so plainly — the only such disable left in the repo.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
