feat(naming): the language table

Maps strings to strings and nothing else -- no calendars, no dates, no
filesystem. That is what lets every command use it without the kernel
learning about presentation.

Every lookup is total, and a miss returns THE KEY rather than the empty
string. A partial translation is therefore usable from its first line,
and the fully-degraded case is exactly today's output (bare slugs) rather
than a blank page.

--raw is a real identity table, not a special case threaded through every
call site: one value the whole program passes around.

Reuses Overlay_ini's INI reader rather than growing a second one that
would drift in its comment, quoting and trimming rules; parse_sections is
exposed in the .mli for that, with no behaviour change.

Fixes one defect found while running the brief's own tests rather than
transcribing them blind: weekday's internal lookup key is an English
day-name word (month's is already the numeral string), so on a miss it
echoed that word instead of the documented numeral, breaking both the
0=Sunday convention and Lang.raw's own identity contract for weekday.
weekday/month now fall back to string_of_int n directly on a miss
instead of through get's generic echo-the-search-key path; month is
byte-identical since its key already equals string_of_int n.

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/kernel/overlay_ini.mli b/lib/kernel/overlay_ini.mli
index bace93b..321cac1 100644
--- a/lib/kernel/overlay_ini.mli
+++ b/lib/kernel/overlay_ini.mli
@@ -32,6 +32,15 @@
     Dates take three forms, matching {!Date_spec}: [MM-DD], [easter+N] or
     [easter-N], and [mon/day/nth] such as [oct/sun/1] or [oct/sun/-1]. *)
 
+(** One [section] of a flat INI file. Exposed so other libraries (the language
+    and config files) reuse this reader rather than growing a second one that
+    would drift in its comment, quoting and trimming rules. *)
+type section = { name : string; fields : (string * string) list }
+
+(** Split INI text into sections. [\[section\]] headers, [key = value] lines,
+    ';' and '#' comments, blank lines ignored. Never raises. *)
+val parse_sections : string -> (section list, string) result
+
 (** [parse ~rank_of_string text] is the overlay [text] denotes.
 
     [rank_of_string] is supplied by the rite, exactly as [Overlay.load] takes