Closes the calendar audit findings:
- README sections renamed to canonical headers: `## Baseline` (was
"Baseline audit"), `## Comparativa` (was "Reference comparison").
Added `## Decisiones` documenting the affirm-on-select choice, the
collapsed `shift-navigate` event for all month/year movement, why
arrow keys don't get their own events (pure focus moves), and the
read-only treatment. Rewrote `## Gaps` with disposition tokens
(implementar/diferir/descartar) for each entry.
- Recipe CSS gains `[data-calendar][data-readonly]` styling: cells
drop their hover affordance and the cursor stays neutral. Selection
+ navigation remain interactive (matches `aria-readonly` semantics).
- Audit A-3.7 refined per the COMPONENT_GUIDE rule "pure focus moves
don't need an event". The check now compares MUTATING keyboard
actions to declared events. Focus-move actions
(next-day/prev-day/next-week/prev-week/next-month/prev-month/
next-year/prev-year/first-day-of-week/last-day-of-week/
focus-{next,prev,first,last,up,down,left,right}) are excluded from
the ratio. Calendar's 10 keys / 2 mutating (Enter+Space → `select`)
/ 1 `commit-select` event now passes correctly.
Project audit: PASS 3 → 5, no new regressions. `range-calendar` also
flips to PASS as a side effect of the focus-move filter.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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