feat: cascade deletes, student notes, import popups, module reorganization

- Cascade delete on all entities (student, module, UE, user, role, promotion)
- Fix Response body reuse bug (factory functions instead of constants)
- Student note viewing via CAS uid (strip non-digit prefix)
- Fix middleware page visibility for students in LOCAL mode
- Import result popup component (shared across all import pages)
- Fix student import to use numEtud from Excel
- Bulk student selection with promo change and delete
- Move UE/UE-Module API and pages from notes to admin module
- Move promotions page from students to admin module
- Multi-year maquette import with per-year promo selection
- Inline promo creation in maquette import
- Static Excel templates (students, notes, maquette)
- Fix XLSX export using blob download instead of writeFile
- Allow students to read modules list (GET /modules)

databases/schema.ts

@@ -75,6 +75,7 @@ export const notes = pgTable("notes", {
   numEtud: integer("numEtud").notNull().references(() => students.numEtud),
   idModule: text("idModule").notNull().references(() => modules.id),
   note: doublePrecision("note").notNull(),
+  noteSession2: doublePrecision("noteSession2"),
 }, (t) => ({
   pk: primaryKey({ columns: [t.numEtud, t.idModule] }),
 }));
@@ -83,6 +84,7 @@ export const ajustements = pgTable("ajustements", {
   numEtud: integer("numEtud").notNull().references(() => students.numEtud),
   idUE: integer("idUE").notNull().references(() => ues.id),
   valeur: doublePrecision("valeur").notNull(),
+  malus: integer("malus").notNull().default(0),
 }, (t) => ({
   pk: primaryKey({ columns: [t.numEtud, t.idUE] }),
 }));