feat: automated seminar invitations

[CLC0609]

Parts of TECH-329

Summary of changes

A fairly simple version of what was requested in TECH-329. Currently the implemented workflow looks like:

• TGI creates a seminar, links a waiting list, and sets a maximum capacity
• TGI specifies an expiry time for the invitations to last
• TGI can see the waiting list they have linked, manually invite members from the list, or, invite members who are not on the list via a modal. TGIs can invite anyone irrelevant of their theory exam status
• Once the TGI has done the manual invites, they can start automatic invites, which works as follows:
  • Invites members who have completed the theory exam, from the top of the waiting list, until capacity - (number of pending invites + number of confirmed attendees) = 0. This means there will only ever be capacity number of potential people invited at any time
  • If someone declines
    • for "Not Interested" - they are removed from the waiting list
    • for "Cannot Attend" - if it's their first Cannot Attend its logged and they remain, if its their 2nd they are removed
  • Either way, the automatic invite system will then fire another invitation to the next person who has completed the theory exam
  • Invitations stop sending when one of two things happen
    • The seminar is closed manually by an Admin
    • When the expiry time would take the invite past the seminar start date and time. e.g. if the expiry is 7 days, invites will stop sending 7 days prior to the event, meaning everyone gets equal time to accept invitations
  • Invitations that expire get cleaned up by a job that runs at 11:30 each day, member is removed from waiting list, if automatic invites enabled, another one is sent
• TGI can see the status of all invitations and all confirmed attendees
• TGI can create Training Place from the Attendees list

What it doesn't do:
The spec requested was fairly large, and with this PR already 3000+ lines, I think it's best to leave these for another one, but most of the groundwork is here to make those fairly simple.

• No email is sent to students who have failed to complete the CTS theory exam, or follow up emails
• No workflow after the invitation process
• No moodle integration

Syncs with CTS group_session_* tables to allow the later part of the workflow to be done on the CTS for now.

Screenshots (if necessary)

Awaiting copy text

[Copilot]

Pull request overview

Implements the initial “automated seminar invitations” workflow (TECH-329 groundwork) by introducing training seminars, invitations, attendee tracking, CTS group session syncing, and a scheduled expiry process, surfaced through a new Filament Training “Seminars” resource and member-facing invitation response pages.

Changes:

• Added Seminar/Invitation/Attendee domain models, migrations, factories, and services to send/track invitations and create attendees.
• Added member routes + controller + Blade views for accepting/declining seminar invitations, plus an expiry command scheduled daily.
• Added CTS sync support (group session + students) via a service and observers, with corresponding tests and CTS test DB schema additions.

Reviewed changes

Copilot reviewed 43 out of 43 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/Unit/Training/Seminar/SeminarInvitationServiceTest.php	Unit coverage for invitation sending/accept/decline/expiry behaviors.
tests/Unit/Training/Seminar/SeminarCtsSyncServiceTest.php	Unit coverage for syncing seminars/attendees into CTS tables.
tests/Feature/Training/Seminar/SeminarInvitationControllerTest.php	Feature coverage for member invitation response endpoints and authorization.
tests/Feature/Training/Seminar/CheckForExpiredSeminarInvitationsCommandTest.php	Feature coverage for the scheduled expiry command behavior.
tests/Database/MockCtsDatabase.php	Extends mocked CTS schema to include group session tables used by the sync service.
routes/web-main.php	Adds member routes for seminar invitation accept/decline actions by token.
resources/views/training/seminar-invitation/result.blade.php	Member-facing result page for accept/decline flows.
resources/views/training/seminar-invitation/expired.blade.php	Member-facing page for expired/invalid/non-respondable invitations.
resources/views/emails/training/seminar_invitation.blade.php	Email template for seminar invitations with response links.
database/seeders/RolesAndPermissionsSeeder.php	Adds permissions for viewing/managing seminars in Filament.
database/migrations/2026_07_02_100020_create_training_seminar_attendees_table.php	Creates attendee table (incl. CTS student ID back-reference).
database/migrations/2026_07_02_100010_create_training_seminar_invitations_table.php	Creates invitations table with token + status + expiry fields.
database/migrations/2026_07_02_100000_create_training_seminars_table.php	Creates seminars table with capacity, expiry window, and CTS session ID.
database/factories/Training/Seminar/SeminarInvitationFactory.php	Factory + states for invitations used in tests.
database/factories/Training/Seminar/SeminarFactory.php	Factory + states for seminars (closed/automatic/past/CTS session).
database/factories/Training/Seminar/SeminarAttendeeFactory.php	Factory for seminar attendees used in tests.
app/Services/Training/SeminarInvitationService.php	Core invitation logic (top-up, create, accept/decline, expiry cleanup).
app/Services/Training/SeminarCtsSyncService.php	Syncs core seminars/attendees into legacy CTS group session tables.
app/Observers/Training/SeminarObserver.php	Triggers CTS sync when seminars are created/updated.
app/Observers/Training/SeminarAttendeeObserver.php	Triggers CTS sync when attendees are created.
app/Notifications/Training/SeminarInvitationNotification.php	Notification that renders the seminar invitation email.
app/Models/Training/WaitingList/RemovalReason.php	Adds waiting list removal reasons for seminar invitation outcomes.
app/Models/Training/Seminar/SeminarInvitation.php	Invitation model with enum cast and response eligibility logic.
app/Models/Training/Seminar/SeminarAttendee.php	Attendee model + observer binding.
app/Models/Training/Seminar/Seminar.php	Seminar model with capacity/cutoff calculations and relations.
app/Models/Mship/Concerns/HasSeminarInvitations.php	Adds invitation relationship + cannot-attend counting on Account.
app/Models/Mship/Account.php	Wires in the seminar invitations trait.
app/Models/Cts/GroupSessionStudent.php	CTS model for group session student join table.
app/Models/Cts/GroupSession.php	CTS model for group sessions.
app/Http/Controllers/Mship/Training/SeminarInvitationController.php	Member controller for responding to invitations by token.
app/Filament/Training/Resources/TrainingPlaces/TrainingPlaceResource.php	Adjusts navigation sort to accommodate new Seminars navigation ordering.
app/Filament/Training/Resources/Seminars/Widgets/SeminarStatsOverview.php	Adds per-seminar stats widget (sent/pending/declined/attendees).
app/Filament/Training/Resources/Seminars/SeminarResource.php	New Filament resource for creating/viewing seminars and managing relations.
app/Filament/Training/Resources/Seminars/RelationManagers/WaitingListRelationManager.php	Shows waiting list accounts + supports manual invitations.
app/Filament/Training/Resources/Seminars/RelationManagers/InvitationsRelationManager.php	Lists invitations and their statuses in Filament.
app/Filament/Training/Resources/Seminars/RelationManagers/AttendeesRelationManager.php	Lists attendees and supports creating Training Places from attendees.
app/Filament/Training/Resources/Seminars/Pages/ViewSeminar.php	Seminar view page actions (enable/disable auto invites, close seminar).
app/Filament/Training/Resources/Seminars/Pages/ListSeminars.php	List page for seminars.
app/Filament/Training/Resources/Seminars/Pages/EditSeminar.php	Edit page for seminars.
app/Filament/Training/Resources/Seminars/Pages/CreateSeminar.php	Create page for seminars (sets created_by to current user).
app/Enums/SeminarInvitationStatus.php	Enum for invitation statuses incl. label/color/responded helpers.
app/Console/Kernel.php	Schedules the daily seminar invitation expiry check at 11:30.
app/Console/Commands/Training/CheckForExpiredSeminarInvitations.php	Command wrapper to run the expiry cleanup service method.

[CLC0609]

Fixes TECH-681