Tagesvorbereitung is where the two systems meet. It attaches the day's
timetable and then asks for the rest: match each lesson to its Schulcloud
course, read what is new there, look at what the previous lesson covered,
check both lists of due work, and read the notes on the periods, where the
announced tests are. Written for the morning before school, so it asks for
something short.
The argument takes heute, morgen, übermorgen or a date in either notation,
because evening preparation is the normal case and a German keyboard writes
21.09.2026. Registered only with WebUntis configured: a Tagesvorbereitung
that has to ask which lessons exist is not one.
readTimetable is shared with untis_timetable, the way readCourse is shared
with get_course, so an attached day reads exactly like a fetched one.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The container runs on UTC and the school does not: at 00:30 in Erfurt the
process clock still says yesterday, so anything deriving "today" from a Date
would prepare the wrong school day twice a night.
core/dates.ts holds calendar dates as plain YYYY-MM-DD strings, which is what
a school day is — today in Europe/Berlin, whole-day arithmetic anchored at
noon UTC so no daylight-saving change can shift a date, the German weekday and
day formats, and the compact form the timetable API takes.
isCalendarDate round-trips rather than only matching a shape: Date.parse turns
2026-02-30 into March 2nd instead of refusing it, so a shape check alone would
let a caller read a different day than it asked for.
germanDate moves here from mcp/prompts.ts, its only previous home, so the
timezone is stated in one place.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A course or room can now be attached to a message rather than fetched:
schulcloud://courses/<id> and schulcloud://rooms/<id> carry exactly what
get_course and get_room return. Deliberately coarse — a picker lists every
resource at once, which suits some twenty courses and not a thousand files.
Two prompts, in German because the school is: zusammenfassung summarises a
course or room, and pruefungsvorbereitung prepares for an exam with practice
questions and a study plan. Each embeds the overview and says where material
hides and what cannot be read.
Claude Code shaped the details, read from its bundle rather than its docs.
It splits prompt arguments on whitespace and drops extra words, so words
arrive joined with "_", and courses match by fragments, whole words first,
so LF1 is not ambiguous with LF10. Its @ autocomplete shows a resource's
description, so the description carries the name. Errors are ProtocolError,
because McpError's message prefix is doubled by the client.
Verified in interactive Claude Code: @-mention, autocomplete and the prompt
commands. 157 tests. Smoke 67/67 live; 69/69 and 67/67 on the local instance.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
