fix(render): remove rank_label -- it duplicated name verbatim

view.ml's rank_label field was a byte-for-byte copy of the celebration's
name (names_value cel.Celebration.names), not a localized rank label at
all -- the kernel has no per-language rank names to draw one from, so
there was no honest value to put there. Nothing consumed it: no
template in the plan, no test, no other code referenced it.

Removed from both day_value and padding_cell so the two key sets stay
identical (23 keys each, verified). schema/day-v1.json already
described 23 keys and needed no change -- it now matches the emitted
output exactly.

schema/day-v1.json is a published contract: once a phone subscribes or
a site fetches this, removing a field is a breaking /v2/ change. The
time to remove a field that lies about its own contents is before
anyone can depend on it, not after.

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/render/view.ml b/lib/render/view.ml
index 9f67705..733aa45 100644
--- a/lib/render/view.ml
+++ b/lib/render/view.ml
@@ -38,7 +38,7 @@ let padding_cell dow =
     [ ("iso", str ""); ("dom", str ""); ("dow", str (string_of_int dow));
       ("in_month", bool false);
       ("season", str ""); ("week", str ""); ("slug", str "");
-      ("name", T.Obj []); ("rank", str ""); ("rank_label", T.Obj []);
+      ("name", T.Obj []); ("rank", str "");
       ("colour", str "");
       ("is_white", bool false); ("is_red", bool false); ("is_green", bool false);
       ("is_violet", bool false); ("is_rose", bool false); ("is_black", bool false);
@@ -61,8 +61,12 @@ let day_value ~vocab (d : ('s, 'r) K.Liturgical_day.t) =
       ("week", str (match tmp.K.Temporal.week with Some w -> string_of_int w | None -> ""));
       ("slug", str (K.Slug.to_string cel.K.Celebration.slug));
       ("name", names_value cel.K.Celebration.names);
+      (* [rank] is the kernel's own class string ("class-1"); there is
+         deliberately no separate localized rank label here -- the kernel
+         has no per-language rank names to draw one from, and a field
+         whose contents cannot honestly differ from [name] should not
+         exist just to exist. Do not re-add one until the kernel can. *)
       ("rank", str (vocab.K.Vocab.rank_to_string cel.K.Celebration.rank));
-      ("rank_label", names_value cel.K.Celebration.names);
       ("colour", str (K.Colour.to_string colour));
       ("is_white", is K.Colour.White); ("is_red", is K.Colour.Red);
       ("is_green", is K.Colour.Green); ("is_violet", is K.Colour.Violet);