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/composables/useProfileSession.ts

@@ -0,0 +1,78 @@
+import { useState, useRuntimeConfig } from '#imports'
+import type { Profile } from './useProfiles'
+
+const buildUrl = (path: string): string => {
+  const config = useRuntimeConfig()
+  const base = ((config.public.apiBaseUrl as string) || '').replace(/\/$/, '')
+  return `${base}${path}`
+}
+
+export function useProfileSession() {
+  const activeProfile = useState<Profile | null>('profileSession:active', () => null)
+  const sessionLoaded = useState<boolean>('profileSession:loaded', () => false)
+  const loading = useState<boolean>('profileSession:loading', () => false)
+
+  const fetchCurrentProfile = async (): Promise<Profile | null> => {
+    loading.value = true
+    try {
+      activeProfile.value = await $fetch<Profile>(buildUrl('/session/profile'), {
+        method: 'GET',
+        credentials: 'include',
+      })
+    } catch (error) {
+      const err = error as { status?: number }
+      if (err?.status === 401) {
+        activeProfile.value = null
+      } else {
+        console.error('Erreur lors du chargement du profil actif', error)
+        activeProfile.value = null
+      }
+    } finally {
+      sessionLoaded.value = true
+      loading.value = false
+    }
+    return activeProfile.value
+  }
+
+  const ensureSession = (): Promise<Profile | null> => {
+    if (!sessionLoaded.value) {
+      return fetchCurrentProfile()
+    }
+    return Promise.resolve(activeProfile.value)
+  }
+
+  const activateProfile = async (profileId: string, password?: string): Promise<void> => {
+    const body: Record<string, string> = { profileId }
+    if (password) {
+      body.password = password
+    }
+    await $fetch(buildUrl('/session/profile'), {
+      method: 'POST',
+      credentials: 'include',
+      body,
+    })
+    await fetchCurrentProfile()
+  }
+
+  const logout = async (): Promise<void> => {
+    try {
+      await $fetch(buildUrl('/session/profile'), {
+        method: 'DELETE',
+        credentials: 'include',
+      })
+    } finally {
+      activeProfile.value = null
+      sessionLoaded.value = true
+    }
+  }
+
+  return {
+    activeProfile,
+    loading,
+    sessionLoaded,
+    ensureSession,
+    fetchCurrentProfile,
+    activateProfile,
+    logout,
+  }
+}