schema: validate against new TFE field spec

- add exemplaire_baiu, exemplaire_erg, cc4r, remarks;
- add is_ulb to jury;
- split jury_lecteurs into interne/externe in view;
- refactor admin edit form with backoffice fields;
- update public fiche to show promoteur ULB and split lecteurs

app/migrations/applied/008_share_links_is_archived.sql

@@ -0,0 +1,5 @@
+-- Migration 008: add is_archived to share_links
+-- Required by ShareLink::listActive() / listArchived() / archive() / validateLink().
+ALTER TABLE share_links ADD COLUMN is_archived INTEGER NOT NULL DEFAULT 0;
+
+CREATE INDEX IF NOT EXISTS idx_share_links_archived ON share_links(is_archived);