refactor : merge Inventory_frontend submodule into frontend/ directory

Merges the full git history of Inventory_frontend into the monorepo
under frontend/. Removes the submodule in favor of a unified repo.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/app/pages/profiles/index.vue

@@ -0,0 +1,124 @@
+<template>
+  <main class="min-h-screen flex items-center justify-center bg-gradient-to-br from-blue-50 to-indigo-100 p-6">
+    <div class="w-full max-w-md">
+      <div class="card bg-base-100 shadow-2xl">
+        <div class="card-body">
+          <h1 class="text-2xl font-bold mb-6 text-center">
+            Connexion
+          </h1>
+
+          <div v-if="loadingProfiles" class="flex justify-center py-8">
+            <span class="loading loading-spinner loading-lg" />
+          </div>
+
+          <form v-else @submit.prevent="handleLogin">
+            <div class="form-control mb-4">
+              <label class="label">
+                <span class="label-text">Profil</span>
+              </label>
+              <select
+                v-model="selectedProfileId"
+                class="select select-bordered w-full"
+                required
+              >
+                <option value="" disabled>
+                  Choisir un profil...
+                </option>
+                <option
+                  v-for="profile in profiles"
+                  :key="profile.id"
+                  :value="profile.id"
+                >
+                  {{ profile.firstName }} {{ profile.lastName }}
+                </option>
+              </select>
+            </div>
+
+            <div class="form-control mb-2">
+              <label class="label">
+                <span class="label-text">Mot de passe</span>
+              </label>
+              <input
+                ref="passwordInput"
+                v-model="password"
+                type="password"
+                placeholder="Mot de passe"
+                class="input input-bordered w-full"
+                :class="{ 'input-error': loginError }"
+              >
+            </div>
+
+            <p v-if="loginError" class="text-error text-sm mb-4">
+              {{ loginError }}
+            </p>
+
+            <button
+              type="submit"
+              class="btn btn-primary w-full mt-4"
+              :disabled="!selectedProfileId || submitting"
+            >
+              <span v-if="submitting" class="loading loading-spinner loading-xs" />
+              Se connecter
+            </button>
+          </form>
+
+          <footer v-if="activeProfile" class="mt-6 pt-4 border-t border-base-300 flex justify-between items-center">
+            <div class="text-sm text-base-content/70">
+              Connecte :
+              <span class="font-semibold">{{ activeProfile.firstName }} {{ activeProfile.lastName }}</span>
+            </div>
+            <button type="button" class="btn btn-outline btn-sm" @click="handleLogout">
+              Deconnexion
+            </button>
+          </footer>
+        </div>
+      </div>
+    </div>
+  </main>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { useProfiles, useProfileSession } from '#imports'
+
+const router = useRouter()
+const { profiles, loadingProfiles, fetchProfiles } = useProfiles()
+const { activeProfile, activateProfile, fetchCurrentProfile, logout } = useProfileSession()
+
+const selectedProfileId = ref('')
+const password = ref('')
+const loginError = ref('')
+const submitting = ref(false)
+const passwordInput = ref(null)
+
+const handleLogin = async () => {
+  if (!selectedProfileId.value) { return }
+  submitting.value = true
+  loginError.value = ''
+  try {
+    await activateProfile(selectedProfileId.value, password.value || undefined)
+    await router.push('/')
+  } catch (error) {
+    const err = error
+    if (err?.status === 401 || err?.statusCode === 401) {
+      loginError.value = 'Mot de passe incorrect.'
+    } else {
+      loginError.value = 'Erreur lors de la connexion.'
+    }
+  } finally {
+    submitting.value = false
+  }
+}
+
+const handleLogout = async () => {
+  await logout()
+  selectedProfileId.value = ''
+  password.value = ''
+}
+
+onMounted(async () => {
+  await fetchProfiles()
+  await fetchCurrentProfile()
+})
+</script>