feat(cli): --cal-dump NAME to generate a commented calendar template

Replace the static examples/sanctorale-of.ini with a `--cal-dump NAME` flag
that writes the running universal calendar to ~/.config/lectio/calendars/NAME.ini
as a fully-commented layer template (every celebration present, all commented).
Uncomment one day and edit a field to override it; enable with `use = NAME`.

- Form-aware: respects -l/--lectionary, so `-l trad --cal-dump x` dumps the 1962
  calendar (322 entries) and the default dumps the OF calendar (212 entries).
- Entries sorted by date then slug; refuses to overwrite an existing file.
- Always in sync with the embedded (or sanctorale-overridden) calendar, so no
  stale checked-in template to maintain.
- Update help text, man page (OPTIONS/FILES/EXAMPLES) and README to match;
  drop examples/sanctorale-of.ini.

1 files changed, 3 insertions, 3 deletions

diff --git a/README.md b/README.md
index ca16b79..bd1155f 100644
--- a/README.md
+++ b/README.md
@@ -308,9 +308,9 @@ INI:
   and enable it with `use = <name>` (comma list, later wins). A layer **adds** a
   saint, **overrides** any field of an existing one (rank, colour, name, readings),
   or **suppresses** it (`suppress = true`). This is the place for diocesan/national
-  propers and one-off rank fixes — you only write the deltas. `examples/sanctorale-of.ini`
-  is a ready-made template: every universal entry, commented out — copy it into
-  `calendars/`, uncomment a day, and edit it.
+  propers and one-off rank fixes — you only write the deltas. `lectio --cal-dump
+  <name>` writes a ready-made template into `calendars/`: every universal entry,
+  commented out — uncomment a day and edit it (add `-l trad` to dump the 1962 form).
 - **Replace the whole base.** Drop `~/.config/lectio/sanctorale/of.ini` (Ordinary
   Form) or `ef.ini` (Extraordinary Form) and it is used *instead of* the embedded
   calendar — for shipping a full refreshed calendar (regenerate with