feat: introduce i18n system and class invitation codes
Add complete i18n infrastructure using next-intl (cookie-driven, without i18n routing) with zh-CN/en dictionary files, locale switcher, and NextIntlClientProvider in root layout. Add class invitation code system with new class_invitation_codes table, data-access layer (generate/validate/consume/revoke), server actions with permission checks, rate limiting, and audit logging. Add class-invitation-manager UI component. Refactor onboarding stepper to use i18n translations and accept new invitation code format (6-char alphanumeric) with backward compatibility for legacy 6-digit codes.
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SpecialX
31
src/shared/i18n/messages/en/auth.json
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31
src/shared/i18n/messages/en/auth.json
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{
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"login": {
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"title": "Sign In",
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"subtitle": "Sign in to your Next_Edu account",
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"email": "Email",
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"password": "Password",
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"rememberMe": "Remember me",
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"signIn": "Sign In",
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"signingIn": "Signing in...",
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"forgotPassword": "Forgot password?",
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"noAccount": "Don't have an account?",
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"register": "Register"
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},
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"register": {
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"title": "Register",
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"subtitle": "Create your Next_Edu account",
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"email": "Email",
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"password": "Password",
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"confirmPassword": "Confirm password",
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"name": "Name",
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"signUp": "Sign Up",
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"signingUp": "Signing up...",
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"hasAccount": "Already have an account?",
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"signIn": "Sign In"
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},
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"errors": {
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"invalidCredentials": "Invalid email or password",
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"emailExists": "This email is already registered",
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"passwordTooWeak": "Password is too weak"
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}
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}
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55
src/shared/i18n/messages/en/classes.json
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55
src/shared/i18n/messages/en/classes.json
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{
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"invitation": {
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"title": "Class Invitation Code",
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"generate": "Generate Code",
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"regenerate": "Regenerate",
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"revoke": "Revoke",
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"copy": "Copy",
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"copied": "Copied",
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"code": "Code",
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"status": "Status",
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"expiresAt": "Expires At",
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"usedCount": "Used Count",
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"maxUses": "Max Uses",
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"createdAt": "Created At",
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"note": "Note",
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"neverExpires": "Never expires",
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"unlimited": "Unlimited",
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"active": "Active",
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"disabled": "Disabled",
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"expired": "Expired",
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"exhausted": "Exhausted",
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"list": "Invitation Codes",
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"empty": "No invitation codes",
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"join": "Join Class",
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"joinPlaceholder": "Enter 6-character code",
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"joinSuccess": "Joined class successfully",
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"joinFailed": "Failed to join class",
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"invalidCode": "Invalid or expired invitation code",
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"rateLimited": "Too many attempts, please try again later",
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"alreadyInClass": "You are already in this class",
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"subjectConflict": "This subject already has a teacher for this class",
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"generateSuccess": "Invitation code generated",
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"generateFailed": "Failed to generate invitation code",
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"revokeSuccess": "Invitation code revoked",
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"revokeFailed": "Failed to revoke invitation code",
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"regenerateSuccess": "Invitation code regenerated",
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"regenerateConfirm": "The old code will be invalidated immediately after regeneration. Continue?",
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"revokeConfirm": "The code will be invalidated immediately after revocation. Continue?",
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"expiresInHours": "Validity (hours)",
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"maxUsesLabel": "Max uses",
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"customNote": "Note (optional)",
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"customNotePlaceholder": "e.g., Back-to-school temporary code",
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"generateWithCustom": "Generate custom code",
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"defaultDuration": "Never expires",
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"defaultMaxUses": "Unlimited"
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},
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"class": {
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"title": "Class",
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"name": "Class Name",
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"grade": "Grade",
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"homeroomTeacher": "Homeroom Teacher",
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"studentCount": "Student Count",
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"actions": "Actions"
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}
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}
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53
src/shared/i18n/messages/en/common.json
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53
src/shared/i18n/messages/en/common.json
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{
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"app": {
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"title": "Next_Edu - K12 Smart Education System",
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"description": "Enterprise Grade K12 Education Management System"
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},
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"actions": {
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"save": "Save",
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"cancel": "Cancel",
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"delete": "Delete",
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"confirm": "Confirm",
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"search": "Search",
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"reset": "Reset",
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"submit": "Submit",
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"back": "Back",
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"next": "Next",
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"previous": "Previous",
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"finish": "Finish",
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"skip": "Skip",
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"retry": "Retry",
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"close": "Close",
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"add": "Add",
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"remove": "Remove",
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"edit": "Edit",
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"view": "View",
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"loading": "Loading...",
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"saving": "Saving...",
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"submitting": "Submitting..."
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},
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"status": {
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"success": "Success",
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"failure": "Failure",
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"pending": "Pending",
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"active": "Active",
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"disabled": "Disabled",
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"expired": "Expired",
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"exhausted": "Exhausted"
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},
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"locale": {
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"switch": "Switch language",
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"zh-CN": "中文",
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"en": "English"
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},
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"empty": {
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"default": "No data",
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"noResults": "No matching results found"
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},
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"pagination": {
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"previous": "Previous",
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"next": "Next",
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"page": "Page {page}",
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"total": "{total} items"
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}
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}
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23
src/shared/i18n/messages/en/errors.json
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23
src/shared/i18n/messages/en/errors.json
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{
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"auth": {
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"required": "Please sign in first",
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"forbidden": "Access denied",
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"sessionExpired": "Session expired, please sign in again"
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},
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"network": {
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"requestFailed": "Request failed, please try again later",
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"timeout": "Request timed out",
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"serverError": "Server error"
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},
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"validation": {
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"required": "This field is required",
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"invalidFormat": "Invalid format",
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"tooShort": "Too short",
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"tooLong": "Too long"
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},
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"db": {
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"notFound": "Record not found",
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"duplicate": "Record already exists",
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"constraintViolation": "Data constraint violation"
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}
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}
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78
src/shared/i18n/messages/en/onboarding.json
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78
src/shared/i18n/messages/en/onboarding.json
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{
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"title": "First Login Onboarding",
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"description": "Complete your first login setup",
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"steps": {
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"roleConfirm": "Role Confirmation",
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"basicInfo": "Basic Information",
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"roleInfo": "Role Information",
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"complete": "Complete"
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},
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"role": {
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"yourRole": "Your Role",
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"allRoles": "All roles: {roles}",
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"adminAssigned": "Roles are pre-assigned by administrators. Contact an administrator to change.",
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"admin": "Administrator",
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"teacher": "Teacher",
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"student": "Student",
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"parent": "Parent",
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"grade_head": "Grade Head",
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"teaching_head": "Teaching Head"
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},
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"form": {
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"name": "Name",
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"nameRequired": "Please enter your name",
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"nameMax": "Name cannot exceed 50 characters",
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"phone": "Phone",
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"phoneRequired": "Please enter your phone number",
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"phoneInvalid": "Please enter a valid 11-digit phone number starting with 1",
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"address": "Address",
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"addressMax": "Address cannot exceed 200 characters"
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},
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"teacher": {
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"classCodes": "Class Invitation Codes",
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"classCodesOptional": "Class invitation codes (optional, multiple allowed)",
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"classCodesPlaceholder": "One per line or comma-separated, 6 alphanumeric characters",
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"classCodesHint": "The server validates the code and checks whether the subject is already assigned to another teacher.",
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"subjects": "Teaching Subjects",
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"subjectsOptional": "Teaching subjects (optional, multiple selection)",
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"subjectsHint": "Multiple subjects can be selected. The server binds the teacher to each subject for each class. If a subject already has a teacher, the binding will be rejected."
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},
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"student": {
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"classCodesOptional": "Class invitation codes (optional)",
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"classCodesPlaceholder": "One per line or comma-separated, 6 alphanumeric characters",
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"classCodesHint": "Skip this if an administrator has pre-assigned your class."
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},
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"parent": {
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"bindHint": "Bind children via child email + child birthday + last 4 digits of child phone (at least one complete entry required, multiple allowed).",
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"childN": "Child {index}",
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"childEmail": "Child Email",
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"childEmailRequired": "Please enter the child's email",
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"childEmailInvalid": "Invalid child email format",
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"childBirthDate": "Child Birthday",
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"childBirthDateRequired": "Please enter the child's birthday",
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"childBirthDateInvalid": "Invalid child birthday format (YYYY-MM-DD)",
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"childPhoneSuffix": "Child Phone Last 4 Digits",
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"childPhoneSuffixRequired": "Please enter the last 4 digits of the child's phone",
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"childPhoneSuffixInvalid": "Invalid last 4 digits format",
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"childRelation": "Relationship",
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"childRelationPlaceholder": "Father / Mother / Other",
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"addChild": "Add Child"
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},
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"complete": {
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"ready": "Ready to Finish",
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"readyHint": "Click finish to enter the system."
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},
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"validation": {
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"needNamePhone": "Please enter your name and phone",
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"needOneChild": "Please complete at least one child's binding information"
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},
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"progress": {
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"label": "Onboarding progress"
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},
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"toast": {
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"completeSuccess": "Setup complete",
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"partialFailure": "Setup complete, but {count} binding(s) failed",
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"submitFailed": "Submission failed",
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"inputInvalid": "Input validation failed"
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}
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}
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