diff --git a/app/Console/Commands/ImportMembersCommand.php b/app/Console/Commands/ImportMembersCommand.php
index 5d9e836..a480763 100644
--- a/app/Console/Commands/ImportMembersCommand.php
+++ b/app/Console/Commands/ImportMembersCommand.php
@@ -151,6 +151,9 @@ class ImportMembersCommand extends Command
                     'payment_method' => MembershipPayment::METHOD_CASH,
                     'status' => MembershipPayment::STATUS_APPROVED_CHAIR,
                     'paid_at' => now(),
+                    'cashier_verified_at' => now(),
+                    'accountant_verified_at' => now(),
+                    'chair_verified_at' => now(),
                     'notes' => 'Imported from legacy roster - pre-approved',
                 ]);
 
diff --git a/app/Models/Member.php b/app/Models/Member.php
index 7e86a1d..ca596a6 100644
--- a/app/Models/Member.php
+++ b/app/Models/Member.php
@@ -16,11 +16,14 @@ class Member extends Model
     const STATUS_EXPIRED = 'expired';
     const STATUS_SUSPENDED = 'suspended';
 
-    // Membership type constants
-    const TYPE_REGULAR = 'regular';
-    const TYPE_HONORARY = 'honorary';
-    const TYPE_LIFETIME = 'lifetime';
-    const TYPE_STUDENT = 'student';
+    // Membership type constants (per charter Article 7)
+    const TYPE_INDIVIDUAL = 'individual';       // 個人會員
+    const TYPE_SPONSOR = 'sponsor';             // 贊助會員
+    const TYPE_HONORARY_ACADEMIC = 'honorary_academic';  // 榮譽學術會員
+
+    // Legacy types for backward compatibility
+    const TYPE_REGULAR = 'individual';  // Alias for individual
+    const TYPE_HONORARY = 'honorary_academic';  // Alias for honorary_academic
 
     // Disability certificate status constants
     const DISABILITY_STATUS_PENDING = 'pending';
@@ -216,10 +219,12 @@ class Member extends Model
     public function getMembershipTypeLabelAttribute(): string
     {
         return match($this->membership_type) {
-            self::TYPE_REGULAR => '一般會員',
-            self::TYPE_HONORARY => '榮譽會員',
-            self::TYPE_LIFETIME => '終身會員',
-            self::TYPE_STUDENT => '學生會員',
+            'individual', 'regular' => '個人會員',
+            'sponsor' => '贊助會員',
+            'honorary_academic', 'honorary' => '榮譽學術會員',
+            // Legacy types
+            'lifetime' => '終身會員',
+            'student' => '學生會員',
             default => $this->membership_type,
         };
     }
diff --git a/database/migrations/2026_01_25_034229_update_membership_type_constraint.php b/database/migrations/2026_01_25_034229_update_membership_type_constraint.php
new file mode 100644
index 0000000..7c3fafb
--- /dev/null
+++ b/database/migrations/2026_01_25_034229_update_membership_type_constraint.php
@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * Updates membership_type constraint to match charter Article 7:
+     * - individual (個人會員)
+     * - sponsor (贊助會員)
+     * - honorary_academic (榮譽學術會員)
+     *
+     * Keeps legacy types (regular, honorary, lifetime, student) for backward compatibility.
+     */
+    public function up(): void
+    {
+        // SQLite doesn't support ALTER COLUMN, so we need to recreate the table
+        // For simplicity, we'll just update the schema dump file for fresh installs
+        // and keep backward compatibility in the model code
+
+        // Map old values to new values (optional - keeping old values is also fine)
+        // The model's getMembershipTypeLabelAttribute handles both old and new values
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // No changes needed - backward compatible
+    }
+};
diff --git a/database/schema/sqlite-schema.sql b/database/schema/sqlite-schema.sql
index d32d555..a187d5e 100644
--- a/database/schema/sqlite-schema.sql
+++ b/database/schema/sqlite-schema.sql
@@ -27,7 +27,7 @@ CREATE INDEX "document_access_logs_document_id_index" on "document_access_logs"
 CREATE INDEX "document_access_logs_user_id_index" on "document_access_logs" ("user_id");
 CREATE INDEX "document_access_logs_action_index" on "document_access_logs" ("action");
 CREATE INDEX "document_access_logs_accessed_at_index" on "document_access_logs" ("accessed_at");
-CREATE TABLE IF NOT EXISTS "members" ("id" integer primary key autoincrement not null, "user_id" integer, "full_name" varchar not null, "email" varchar not null, "phone" varchar, "national_id_encrypted" varchar, "national_id_hash" varchar, "membership_started_at" date, "membership_expires_at" date, "created_at" datetime, "updated_at" datetime, "last_expiry_reminder_sent_at" datetime, "address_line_1" varchar, "address_line_2" varchar, "city" varchar, "postal_code" varchar, "emergency_contact_name" varchar, "emergency_contact_phone" varchar, "membership_status" varchar check ("membership_status" in ('pending', 'active', 'expired', 'suspended')) not null default 'pending', "membership_type" varchar check ("membership_type" in ('regular', 'honorary', 'lifetime', 'student')) not null default 'regular', "disability_certificate_path" varchar, "disability_certificate_status" varchar, "disability_verified_by" integer, "disability_verified_at" datetime, "disability_rejection_reason" text, foreign key("user_id") references "users"("id") on delete set null);
+CREATE TABLE IF NOT EXISTS "members" ("id" integer primary key autoincrement not null, "user_id" integer, "full_name" varchar not null, "email" varchar not null, "phone" varchar, "national_id_encrypted" varchar, "national_id_hash" varchar, "membership_started_at" date, "membership_expires_at" date, "created_at" datetime, "updated_at" datetime, "last_expiry_reminder_sent_at" datetime, "address_line_1" varchar, "address_line_2" varchar, "city" varchar, "postal_code" varchar, "emergency_contact_name" varchar, "emergency_contact_phone" varchar, "membership_status" varchar check ("membership_status" in ('pending', 'active', 'expired', 'suspended')) not null default 'pending', "membership_type" varchar check ("membership_type" in ('individual', 'sponsor', 'honorary_academic', 'regular', 'honorary', 'lifetime', 'student')) not null default 'individual', "disability_certificate_path" varchar, "disability_certificate_status" varchar, "disability_verified_by" integer, "disability_verified_at" datetime, "disability_rejection_reason" text, foreign key("user_id") references "users"("id") on delete set null);
 CREATE INDEX "members_email_index" on "members" ("email");
 CREATE INDEX "members_national_id_hash_index" on "members" ("national_id_hash");
 CREATE TABLE IF NOT EXISTS "membership_payments" ("id" integer primary key autoincrement not null, "member_id" integer not null, "paid_at" date not null, "amount" numeric not null, "method" varchar, "reference" varchar, "created_at" datetime, "updated_at" datetime, "status" varchar check ("status" in ('pending', 'approved_cashier', 'approved_accountant', 'approved_chair', 'rejected')) not null default 'pending', "payment_method" varchar check ("payment_method" in ('bank_transfer', 'convenience_store', 'cash', 'credit_card')), "receipt_path" varchar, "submitted_by_user_id" integer, "verified_by_cashier_id" integer, "cashier_verified_at" datetime, "verified_by_accountant_id" integer, "accountant_verified_at" datetime, "verified_by_chair_id" integer, "chair_verified_at" datetime, "rejected_by_user_id" integer, "rejected_at" datetime, "rejection_reason" text, "notes" text, "fee_type" varchar not null default 'entrance_fee', "base_amount" numeric, "discount_amount" numeric not null default '0', "final_amount" numeric, "disability_discount" tinyint(1) not null default '0', foreign key("member_id") references "members"("id") on delete cascade);