fix: correct handler bugs exposed by test suite

- ajustements [numEtud]/[idUE]: fix .where() missing and() — PUT/DELETE
  were applying only numEtud condition, modifying all rows for a student
- modules/users/enseignements POST: add try/catch, return 500 on invalid JSON
- modules/[idModule] PUT: add try/catch + type check on nom (string required)
- modules POST: add .trim() check to reject whitespace-only id/nom
- users POST: add .trim() check to reject whitespace-only id/nom/prenom
- ues POST: add .trim() check to reject whitespace-only nom
- notes POST: add type check (typeof number) and bounds check (0 ≤ note ≤ 20)
- ue-modules POST: add coeff >= 0 validation

Update robustness tests to reflect fixed behavior (remove [BUG] labels,
replace assertRejects with status code assertions).

routes/(apps)/notes/api/ajustements/[numEtud]/[idUE].ts

@@ -2,7 +2,7 @@ import { FreshContext, Handlers } from "$fresh/server.ts";
 import { db } from "$root/databases/db.ts";
 import { ajustements } from "$root/databases/schema.ts";
 import { AuthenticatedState } from "$root/defaults/interfaces.ts";
-import { eq } from "npm:drizzle-orm@0.45.2";
+import { and, eq } from "npm:drizzle-orm@0.45.2";
 
 const NOT_FOUND = new Response(
   JSON.stringify({ error: "Ajustement introuvable" }),
@@ -31,7 +31,7 @@ export const handler: Handlers<null, AuthenticatedState> = {
     const ajustement = await db
       .select()
       .from(ajustements)
-      .where(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE))
+      .where(and(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE)))
       .then((rows) => rows[0] ?? null);
 
     if (!ajustement) return NOT_FOUND;
@@ -69,7 +69,7 @@ export const handler: Handlers<null, AuthenticatedState> = {
     const [updated] = await db
       .update(ajustements)
       .set({ valeur: body.valeur })
-      .where(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE))
+      .where(and(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE)))
       .returning();
 
     if (!updated) return NOT_FOUND;
@@ -97,7 +97,7 @@ export const handler: Handlers<null, AuthenticatedState> = {
 
     const [deleted] = await db
       .delete(ajustements)
-      .where(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE))
+      .where(and(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE)))
       .returning();
 
     if (!deleted) return NOT_FOUND;

routes/(apps)/notes/api/notes.ts

@@ -49,6 +49,12 @@ export const handler: Handlers = {
         });
       }
 
+      if (typeof note !== "number" || note < 0 || note > 20) {
+        return new Response("Champ 'note' doit être un nombre entre 0 et 20", {
+          status: 400,
+        });
+      }
+
       const result = await db.insert(notes).values({ note, numEtud, idModule })
         .returning();
 

routes/(apps)/notes/api/ue-modules.ts

@@ -47,6 +47,12 @@ export const handler: Handlers = {
         );
       }
 
+      if (typeof coeff !== "number" || coeff < 0) {
+        return new Response("Champ 'coeff' doit être un nombre >= 0", {
+          status: 400,
+        });
+      }
+
       const result = await db.insert(ueModules).values({
         idModule,
         idUE,

routes/(apps)/notes/api/ues.ts

@@ -24,7 +24,7 @@ export const handler: Handlers = {
       const body = await request.json();
       const { nom } = body;
 
-      if (!nom) {
+      if (!nom || !nom.trim()) {
         return new Response("Champ 'nom' manquant", { status: 400 });
       }