feat(templates): the ordo booklet, rebuilt

A5, one week per page, with a table of contents, each day in a framed box
and a colour swatch so the page is scannable without reading. Real names
throughout, and every fixed string routed through the term vocabulary so
a translated booklet needs no template edit.

The previous version was A4, printed slugs, ran days together with no
visual separation, had no contents, and gave the liturgical colour only
as the word white. It was not usable as a printed booklet.

lib/render/view.ml already carried month_num/month_name on each week
object from Task 5, so no kernel/view change was needed here -- the
template uses those instead of a parent path the engine cannot express.

Box padding, margins and secondary-line font size were tightened past
the brief's own starting values: at the brief's sizes a week with several
long commemoration names (e.g. Feb 21-27, three of seven days carrying
one) overflowed onto a second physical page, breaking one-week-per-page.
Verified by measuring page count against the known week count (63 weeks
in 2027) until every content page carried exactly one week, not by eye.

The header comments of all six flavours were themselves a trap the brief
warns about: writing double braces to NAME a template field inside a
LaTeX %, groff .\", HTML <!-- -->, or AsciiDoc // comment gets parsed as
a real tag by this brace-only engine, not treated as inert prose. An
early draft's own comments did this and produced 'empty tag path' parse
errors and a silently-unclosed section; every comment in all six
templates is now written without ever typing two braces in a row.

The other five flavours keep their existing structure; only the dead
{{#name}}{{la}}{{^la}}{{slug}}{{/la}}{{/name}} idiom is replaced with a
plain {{name}} (extended to comms entries too, which carry their own
resolved name), and the fixed labels (Ordo, Epistle, Gospel,
Commemoration) now come from {{term.*}}.

Golden regeneration could not follow the brief's own `colitur table`
shell-out literally: the CLI's current default language is Latin-only
(bin/main.ml's Task-5 bridge), while test_render_golden.ml renders
through Test_view's English-primary/Latin-fallback table, so the two
produce different text for the same slug. The goldens were regenerated
through the test's own render path instead (a temporary env-gated block
in test_render_golden.ml, reverted before this commit), so they agree
with what the suite actually computes.

All six ordo golden tests pass; the three grid ones are Task 9's scope.
make check-templates passes with zero warnings. The CLI-rendered PDF is
A5 (148x210mm), 65 pages -- 2 pages of title/contents plus exactly one
page per week (63), verified with no overflow.

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