restore(mobile): restore mobile/ directory to pre-d2217531 state

Restored mobile/ from d22175310a711e7ebdd8062ae29a54f0136dc3f6^
(parent commit d94e9ca4bc).

Commit d22175310a (google-labs-jules[bot], 2026-03-23T14:45:22Z) introduced
an SSRF security fix for IMAP connections but unintentionally deleted or
truncated a large number of files across the repository, including 24 files
under mobile/.

This commit targets only the mobile/ directory and restores the following
files to their pre-d2217531 state:

- mobile/README.md
- mobile/app.json
- mobile/app/(tabs)/_layout.tsx
- mobile/app/(tabs)/file-detail.tsx  (re-added)
- mobile/app/+not-found.tsx          (re-added)
- mobile/app/_layout.tsx
- mobile/eslint.config.js            (re-added)
- mobile/package-lock.json
- mobile/package.json
- mobile/src/context/ShareContext.tsx
- mobile/src/i18n/de.json            (re-added)
- mobile/src/i18n/en.json            (re-added)
- mobile/src/i18n/es.json            (re-added)
- mobile/src/i18n/fr.json            (re-added)
- mobile/src/i18n/index.ts           (re-added)
- mobile/src/i18n/it.json            (re-added)
- mobile/src/screens/FileDetailScreen.tsx (re-added)
- mobile/src/screens/FilesScreen.tsx
- mobile/src/screens/LoginScreen.tsx
- mobile/src/screens/ProfileScreen.tsx
- mobile/src/screens/UploadScreen.tsx
- mobile/src/screens/WelcomeScreen.tsx
- mobile/src/services/api.ts
- mobile/src/utils/mimeTypes.ts      (re-added)
- mobile/src/utils/normalizeUri.ts   (re-added)

Security fixes introduced by d2217531 that are unrelated to mobile/
(IMAP SSRF fix in app/utils/network.py and app/tasks/imap_tasks.py)
are preserved — this restore targets only files under mobile/.

mobile/src/screens/ProfileScreen.tsx

@@ -2,6 +2,8 @@
  * ProfileScreen – authenticated user profile and settings.
  */
 
+import Constants from "expo-constants";
+import * as Linking from "expo-linking";
 import React from "react";
 import {
   Alert,
@@ -9,30 +11,84 @@ import {
   Pressable,
   ScrollView,
   StyleSheet,
-  Switch,
   Text,
   View,
 } from "react-native";
 import { useAuth } from "../context/AuthContext";
+import { useLocale, getSupportedLanguages, t } from "../i18n";
+import api from "../services/api";
+
+const DEFAULT_SERVER_URL = "https://app.docuelevate.org";
 
 export default function ProfileScreen() {
   const { user, signOut, baseUrl } = useAuth();
+  const { lang, setLang } = useLocale();
+
+  const effectiveBaseUrl = baseUrl || DEFAULT_SERVER_URL;
+  const appVersion = Constants.expoConfig?.version ?? "1.0.0";
+  const languages = getSupportedLanguages();
+
+  async function handleLanguageSelect(code: string) {
+    await setLang(code);
+    // Fire-and-forget: sync the choice to the server so it persists across
+    // platforms (desktop web will reflect this preference too).
+    api.setServerLanguage(code).catch(() => {
+      // Network errors are non-critical – the local change is already applied.
+    });
+  }
 
   function handleSignOut() {
-    Alert.alert("Sign out", "Are you sure you want to sign out?", [
-      { text: "Cancel", style: "cancel" },
+    Alert.alert(t("profile.sign_out_title"), t("profile.sign_out_msg"), [
+      { text: t("common.cancel"), style: "cancel" },
       {
-        text: "Sign out",
+        text: t("profile.sign_out"),
         style: "destructive",
         onPress: signOut,
       },
     ]);
   }
 
+  function handleDeleteAccount() {
+    Alert.alert(
+      t("profile.delete_account_title"),
+      t("profile.delete_account_msg"),
+      [
+        { text: t("common.cancel"), style: "cancel" },
+        {
+          text: t("profile.delete_account"),
+          style: "destructive",
+          onPress: () => {
+            Linking.openURL(`${effectiveBaseUrl}/account/delete`).catch(() => {
+              Alert.alert(t("common.error"), t("profile.could_not_open", { page: t("profile.delete_account") }));
+            });
+          },
+        },
+      ]
+    );
+  }
+
+  function openPrivacyPolicy() {
+    Linking.openURL(`${effectiveBaseUrl}/privacy`).catch(() => {
+      Alert.alert(t("common.error"), t("profile.could_not_open", { page: t("profile.privacy_policy") }));
+    });
+  }
+
+  function openTermsOfService() {
+    Linking.openURL(`${effectiveBaseUrl}/terms`).catch(() => {
+      Alert.alert(t("common.error"), t("profile.could_not_open", { page: t("profile.terms_of_service") }));
+    });
+  }
+
+  function openImprint() {
+    Linking.openURL(`${effectiveBaseUrl}/imprint`).catch(() => {
+      Alert.alert(t("common.error"), t("profile.could_not_open", { page: t("profile.imprint") }));
+    });
+  }
+
   if (!user) {
     return (
       <View style={styles.center}>
-        <Text style={styles.emptyText}>Not signed in</Text>
+        <Text style={styles.emptyText}>{t("profile.not_signed_in")}</Text>
       </View>
     );
   }
@@ -56,44 +112,121 @@ export default function ProfileScreen() {
         )}
         <Text style={styles.displayName}>{user.display_name ?? user.owner_id}</Text>
         {user.email && <Text style={styles.email}>{user.email}</Text>}
-        {user.is_admin && <Text style={styles.adminBadge}>Admin</Text>}
+        {user.is_admin && <Text style={styles.adminBadge}>{t("profile.admin")}</Text>}
       </View>
 
       {/* Server info */}
       <View style={styles.section}>
-        <Text style={styles.sectionTitle}>Connection</Text>
+        <Text style={styles.sectionTitle}>{t("profile.connection")}</Text>
         <View style={styles.row}>
-          <Text style={styles.rowLabel}>Server</Text>
+          <Text style={styles.rowLabel}>{t("profile.server")}</Text>
           <Text style={styles.rowValue} numberOfLines={1}>
-            {baseUrl || "–"}
+            {effectiveBaseUrl}
           </Text>
         </View>
         <View style={styles.row}>
-          <Text style={styles.rowLabel}>User ID</Text>
+          <Text style={styles.rowLabel}>{t("profile.user_id")}</Text>
           <Text style={styles.rowValue} numberOfLines={1}>
             {user.owner_id}
           </Text>
         </View>
       </View>
 
-      {/* Danger zone */}
+      {/* Settings */}
+      <View style={styles.section}>
+        <Text style={styles.sectionTitle}>{t("profile.settings")}</Text>
+        <Text style={styles.settingLabel}>{t("profile.language")}</Text>
+        <View style={styles.languageGrid}>
+          {languages.map((l) => (
+            <Pressable
+              key={l.code}
+              style={[
+                styles.languageChip,
+                lang === l.code && styles.languageChipActive,
+              ]}
+              onPress={() => handleLanguageSelect(l.code)}
+              accessibilityRole="button"
+              accessibilityLabel={`Set language to ${l.label}`}
+              accessibilityState={{ selected: lang === l.code }}
+            >
+              <Text
+                style={[
+                  styles.languageChipText,
+                  lang === l.code && styles.languageChipTextActive,
+                ]}
+              >
+                {l.label}
+              </Text>
+            </Pressable>
+          ))}
+        </View>
+      </View>
+
+      {/* Legal & Privacy */}
+      <View style={styles.section}>
+        <Text style={styles.sectionTitle}>{t("profile.legal")}</Text>
+        <Pressable
+          style={styles.linkRow}
+          onPress={openPrivacyPolicy}
+          accessibilityRole="link"
+          accessibilityLabel={t("profile.privacy_policy")}
+        >
+          <Text style={styles.linkText}>{t("profile.privacy_policy")}</Text>
+          <Text style={styles.linkChevron}>›</Text>
+        </Pressable>
+        <Pressable
+          style={styles.linkRow}
+          onPress={openTermsOfService}
+          accessibilityRole="link"
+          accessibilityLabel={t("profile.terms_of_service")}
+        >
+          <Text style={styles.linkText}>{t("profile.terms_of_service")}</Text>
+          <Text style={styles.linkChevron}>›</Text>
+        </Pressable>
+        <Pressable
+          style={[styles.linkRow, styles.linkRowLast]}
+          onPress={openImprint}
+          accessibilityRole="link"
+          accessibilityLabel={t("profile.imprint")}
+        >
+          <Text style={styles.linkText}>{t("profile.imprint")}</Text>
+          <Text style={styles.linkChevron}>›</Text>
+        </Pressable>
+      </View>
+
+      {/* Sign out */}
       <View style={styles.section}>
         <Pressable
           style={styles.signOutButton}
           onPress={handleSignOut}
           accessibilityRole="button"
-          accessibilityLabel="Sign out"
+          accessibilityLabel={t("profile.sign_out")}
         >
-          <Text style={styles.signOutText}>Sign out</Text>
+          <Text style={styles.signOutText}>{t("profile.sign_out")}</Text>
         </Pressable>
       </View>
+
+      {/* Account deletion – Apple Guideline 5.1.1(v) */}
+      <View style={styles.section}>
+        <Pressable
+          style={styles.deleteAccountButton}
+          onPress={handleDeleteAccount}
+          accessibilityRole="button"
+          accessibilityLabel={t("profile.delete_account")}
+        >
+          <Text style={styles.deleteAccountText}>{t("profile.delete_account")}</Text>
+        </Pressable>
+      </View>
+
+      {/* App version */}
+      <Text style={styles.versionText}>DocuElevate v{appVersion}</Text>
     </ScrollView>
   );
 }
 
 const styles = StyleSheet.create({
   scroll: { flex: 1, backgroundColor: "#f9fafb" },
-  content: { padding: 20 },
+  content: { padding: 20, paddingBottom: 40 },
   center: {
     flex: 1,
     alignItems: "center",
@@ -180,6 +313,27 @@ const styles = StyleSheet.create({
     maxWidth: "60%",
     textAlign: "right",
   },
+  linkRow: {
+    flexDirection: "row",
+    justifyContent: "space-between",
+    alignItems: "center",
+    paddingVertical: 12,
+    borderBottomWidth: 1,
+    borderBottomColor: "#f3f4f6",
+    minHeight: 44,
+  },
+  linkRowLast: {
+    borderBottomWidth: 0,
+  },
+  linkText: {
+    fontSize: 15,
+    color: "#1e40af",
+  },
+  linkChevron: {
+    fontSize: 18,
+    color: "#9ca3af",
+    fontWeight: "600",
+  },
   signOutButton: {
     backgroundColor: "#fee2e2",
     borderRadius: 10,
@@ -192,4 +346,58 @@ const styles = StyleSheet.create({
     fontWeight: "700",
     fontSize: 15,
   },
+  deleteAccountButton: {
+    backgroundColor: "#ffffff",
+    borderRadius: 10,
+    borderWidth: 1,
+    borderColor: "#dc2626",
+    paddingVertical: 14,
+    alignItems: "center",
+    minHeight: 48,
+  },
+  deleteAccountText: {
+    color: "#dc2626",
+    fontWeight: "600",
+    fontSize: 14,
+  },
+  versionText: {
+    fontSize: 12,
+    color: "#9ca3af",
+    textAlign: "center",
+    marginTop: 8,
+  },
+  settingLabel: {
+    fontSize: 14,
+    color: "#374151",
+    fontWeight: "500",
+    marginBottom: 10,
+  },
+  languageGrid: {
+    flexDirection: "row",
+    flexWrap: "wrap",
+    gap: 8,
+  },
+  languageChip: {
+    paddingHorizontal: 14,
+    paddingVertical: 8,
+    borderRadius: 20,
+    backgroundColor: "#f3f4f6",
+    borderWidth: 1,
+    borderColor: "#e5e7eb",
+    minHeight: 36,
+    justifyContent: "center",
+  },
+  languageChipActive: {
+    backgroundColor: "#dbeafe",
+    borderColor: "#1e40af",
+  },
+  languageChipText: {
+    fontSize: 13,
+    color: "#6b7280",
+    fontWeight: "500",
+  },
+  languageChipTextActive: {
+    color: "#1e40af",
+    fontWeight: "700",
+  },
 });