kernel(record): flat all-string canonical output view

The boundary where rite-parametric types stop. CSV, JSON and the template
engine all render from this one schema, so they never see a type variable.
headers/to_row cover the scalar columns; names and citations are
variable-arity and wait for the richer encoders in Plan 5.

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/kernel/record.mli b/lib/kernel/record.mli
new file mode 100644
index 0000000..858f125
--- /dev/null
+++ b/lib/kernel/record.mli
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+(** The canonical flat output view: one row per day, every field a string. This
+    is the boundary at which rite-parametric types stop. *)
+type t = {
+  date : string;
+  rite : string;
+  season : string;
+  week : string;
+  weekday : string;
+  slug : string;
+  rank : string;
+  colour : string;
+  subject : string;
+  names : (string * string) list;
+  citations : (string * string) list;
+}
+
+val of_temporal : rite:string -> ('s, 'r) Vocab.t -> Date.t -> ('s, 'r) Temporal.t -> t
+
+(** Column names for [to_row]. Names and citations are excluded: they are
+    variable-arity and belong to richer encodings, added in Plan 5. *)
+val headers : string list
+
+val to_row : t -> string list