fix: sidebar active style (#82)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

---------

Co-authored-by: admin malio <malio@yuno.malio.fr>
Co-authored-by: THOLOT DECHENE Matthieu <matthieu@yuno.malio.fr>
Co-authored-by: matthieu <matthieu@yuno.malio.fr>
Reviewed-on: #82
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/sidebar/Sidebar.test.ts

@@ -1,12 +1,14 @@
 import {describe, expect, it} from 'vitest'
 import {mount} from '@vue/test-utils'
 import type {DefineComponent} from 'vue'
+import {createMemoryHistory, createRouter} from 'vue-router'
 import {Icon as IconifyIcon} from '@iconify/vue'
 import Sidebar from './Sidebar.vue'
 
 type SidebarItem = {
   label: string
   to: string
+  exact?: boolean
 }
 
 type SidebarSection = {
@@ -50,14 +52,30 @@ const stubs = {
   },
 }
 
+function makeRouter(path = '/') {
+  const router = createRouter({
+    history: createMemoryHistory(),
+    routes: [{path: '/:all(.*)*', component: {template: '<div />'}}],
+  })
+  router.push(path)
+  return router
+}
+
 function mountComponent(props: SidebarProps, slots?: Record<string, string>) {
   return mount(SidebarForTest, {
     props,
     slots,
-    global: {stubs},
+    global: {stubs, plugins: [makeRouter()]},
   })
 }
 
+// Monte avec le router positionné sur `path` (pour tester l'état actif).
+async function mountAt(path: string, props: SidebarProps = {sections}) {
+  const router = makeRouter(path)
+  await router.isReady()
+  return mount(SidebarForTest, {props, global: {stubs, plugins: [router]}})
+}
+
 describe('MalioSidebar', () => {
   it('renders expanded by default', () => {
     const wrapper = mountComponent({sections})
@@ -104,12 +122,39 @@ describe('MalioSidebar', () => {
     expect(wrapper.find('a').classes()).not.toContain('hover:text-m-primary')
   })
 
-  it('actif : texte primary + semi-bold, sans fond, via active-class', () => {
-    const wrapper = mountComponent({sections})
-    const activeClass = wrapper.find('a').attributes('active-class') ?? ''
-    expect(activeClass).toContain('text-m-primary')
-    expect(activeClass).toContain('font-semibold')
-    expect(activeClass).not.toContain('bg-')
+  it('actif : route exacte → lien en primary + semi-bold, sans fond', () => {
+    return mountAt('/reception').then((wrapper) => {
+      const link = wrapper.findAll('a')[0]
+      expect(link.classes()).toContain('font-semibold')
+      expect(link.classes()).toContain('!text-m-primary')
+      expect(link.classes().some(c => c.startsWith('bg-'))).toBe(false)
+    })
+  })
+
+  it('actif : reste actif sur une sous-route (match par préfixe)', async () => {
+    const wrapper = await mountAt('/reception/1/edit')
+    expect(wrapper.findAll('a')[0].classes()).toContain('font-semibold')
+  })
+
+  it('actif : les autres liens ne sont pas actifs sur une sous-route', async () => {
+    const wrapper = await mountAt('/reception/1/edit')
+    expect(wrapper.findAll('a')[1].classes()).not.toContain('font-semibold')
+  })
+
+  it('exact : pas actif sur une sous-route', async () => {
+    const exactSections: SidebarSection[] = [
+      {label: 'S', icon: 'mdi:home', items: [{label: 'R', to: '/reception', exact: true}]},
+    ]
+    const wrapper = await mountAt('/reception/1/edit', {sections: exactSections})
+    expect(wrapper.find('a').classes()).not.toContain('font-semibold')
+  })
+
+  it('exact : actif sur la route exacte', async () => {
+    const exactSections: SidebarSection[] = [
+      {label: 'S', icon: 'mdi:home', items: [{label: 'R', to: '/reception', exact: true}]},
+    ]
+    const wrapper = await mountAt('/reception', {sections: exactSections})
+    expect(wrapper.find('a').classes()).toContain('font-semibold')
   })
 
   it('renders section icons via IconifyIcon', () => {