Backend (school-service):
- tt_solution gains parent_solution_id (self-FK, ON DELETE SET NULL)
and seconds_limit columns via ALTER TABLE IF NOT EXISTS.
- CreateTimetableSolutionRequest accepts optional parent_solution_id
and seconds_limit (5-600s) with binding validation.
- CreateSolution checks parent ownership before INSERT so users can't
fork another tenant's plan.
- New PUT /timetable/lessons/:id/pin endpoint; ownership enforced via
the lesson's solution.created_by_user_id JOIN.
Solver:
- Lesson.pinned now carries @PlanningPin so Timefold leaves locked
cells untouched during the search.
- build_problem() takes optional parent_solution_id; if set, copies
pinned (class_id, subject_id, day, period, room) tuples onto fresh
Lesson objects via greedy first-fit matching. Surplus pinned rows
from curriculum changes are silently dropped.
- _build_factory(seconds) replaces the module-level factory so each
job honours its tt_solution.seconds_limit override.
- persist_solution writes lesson.pinned back so subsequent re-solves
inherit it.
Frontend (studio-v2):
- SolutionList grows three knobs in the create-form: Basieren auf
(parent dropdown, only completed solutions, disabled when none),
Sekunden-Limit (5-600), and the existing Name.
- PlanView cells get a pin/unpin button with optimistic update and
rollback on error. Pinned cells gain an amber ring.
- types.ts + api.ts mirror the new fields; lessonsApi.pin(id, bool).
- HelpPanel: collapsible 6-step Bedienungsanleitung explaining the
setup-to-plan workflow. Anchored at the top of /stundenplan above
the dev token banner.
- page.tsx switches to the same gradient + animated-blob background
used on /korrektur so /stundenplan stops looking like a slate-900
test page.
- JWT dev banner gets a step-by-step explanation of how to grab the
token from DevTools and a non-blocking success indicator (no more
alert()).
Tests:
- school-service: 6 new validator cases for parent_solution_id +
seconds_limit boundaries. 73 subtests total, all green.
- studio-v2: mockSchoolApi adds PUT /lessons/:id/pin route. 5 new
Playwright tests across two suites (parent-selector visibility +
options, seconds-limit input, pin button render, pin-icon flip).
Existing tests adjusted to the new help panel + JWT banner wording.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
school-service additions:
- tt_solution + tt_lesson migration. tt_lesson carries three UNIQUEs
(solution+class, solution+teacher, solution+room per slot) so the
DB itself rejects any double-booking the solver might emit by
mistake.
- Solution CRUD + GET solutions/:id/lessons endpoint with joined
class/subject/teacher/room names for display.
- POST /timetable/solutions creates the row then fires off the
solver-service via HTTP (5s timeout, mark failed if unreachable).
- SOLVER_SERVICE_URL config wired through main.go/handlers.
New service timetable-solver-service:
- Python 3.11 + FastAPI + Timefold Solver 1.21 (Apache-2.0). Dockerfile
bundles OpenJDK 17 since Timefold for Python is a JPype bridge.
- app/domain.py — Timefold @planning_entity Lesson with timeslot+room
as PlanningVariables; @planning_solution Timetable holds problem
facts (rooms/teachers/etc.) AND rule-fact collections.
- app/rules.py — frozen dataclasses mirroring 6 of the 15 tt_
constraint_* tables initially.
- app/constraints.py — ConstraintProvider with 3 universal hard
constraints (no double-booking) + 5 DB-driven constraints
(teacher_unavailable_day/window, teacher_excluded_room,
room_unavailable, room_requires_type) + 1 quality soft constraint
(subject_preferred_period). Remaining 9 constraint types ready to
plug in via the same join pattern.
- app/repository.py — async loaders for stammdaten + rules; builds
one Lesson per (curriculum row × weekly_hours), skipping rows
without a tt_assignment teacher.
- app/runner.py — runs solver in ThreadPoolExecutor so the FastAPI
event loop stays responsive. Updates tt_solution status
pending→running→completed|infeasible|failed.
- app/main.py — POST /api/v1/solve (202 Accepted, background task),
GET /api/v1/jobs/{id}, /health. School-service polls tt_solution
directly instead of GET /jobs for the typical case.
- docker-compose.yml adds the service on port 8095, depending on
core-health-check.
Tests:
- school-service: validator test for CreateTimetableSolutionRequest
(allows empty name).
- solver-service: tests/test_domain.py + tests/test_rules.py cover
construction + hashability of the planning facts. Full solve flow
deferred to Phase 8 integration with seed data.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Frontend additions in studio-v2:
- LehrerManager / FaecherManager / RaeumeManager — same CRUD pattern as
Klassen, with entity-specific form fields and table columns.
- regeln/TeacherUnavailableDayEditor — first constraint editor, joins
against teachersApi to render a readable name in the dropdown and
list. Falls back to a guidance banner when no teachers exist yet.
- page.tsx wires up the new tabs; data-testid attributes added across
managers so the Playwright suite can target them deterministically.
Tests:
- school-service: timetable_constraints_more_test.go fills the
remaining 9 constraint DTOs (TeacherMaxHoursDay/Week,
TeacherExcludedSubject/Room, SubjectMinDayGap,
SubjectContiguousWhenRepeated, SubjectDoubleLesson, ClassNoGaps,
RoomRequiresType). 66 subtests total, all green.
- studio-v2: e2e/stundenplan.spec.ts covers the page shell, tab
navigation, Klassen CRUD with mocked backend, constraint editor's
empty-teacher fallback, sidebar entry. All school-service calls
intercepted via page.route() so the suite is hermetic.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
sed replacement left orphaned hostname references in story page
and empty lines in getApiBase functions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The formula int(17 - grade*3) was off by one for grades 1.0 and 1.3
due to integer truncation. Added +1 adjustment for grades < 2.0 to
match the intended mapping (1.0=15, 1.3=14).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Benjamin Admin