feat: refactor clinic management into a dedicated settings tab

- Removed MyClinicPage and redirected its functionality to a new ClinicDoctorsPage.
- Created ClinicDoctorsManager component for managing doctors and invitations within the settings layout.
- Updated backend permissions to allow clinic owners to detach doctors, alongside admins.
- Adjusted API documentation to reflect new permission structure.
- Updated tests to cover new functionality and permissions.
- Modified sidebar and settings menu to reflect the new structure and role-based visibility.

assets/admin/pages/ClinicDoctorsPage.tsx

@@ -0,0 +1,53 @@
+import { useEffect } from 'react';
+import { Link } from 'react-router-dom';
+import { PencilIcon } from '@heroicons/react/24/outline';
+import { useAuthStore } from '../stores/authStore';
+import SettingsLayout from '../components/layout/SettingsLayout';
+import ClinicDoctorsManager from '../components/ClinicDoctorsManager';
+
+/**
+ * ClinicDoctorsPage — the clinic-owner settings tab for managing the clinic's
+ * doctors (list, invite, detach) and pending invitations. Renders inside the
+ * settings shell instead of jumping to the standalone admin ClinicDetailPage.
+ * Clinic-info editing (name, gallery, addresses, specialties) stays on the full
+ * detail page, reachable via the "ویرایش اطلاعات کلینیک" link.
+ */
+function ClinicDoctorsContent() {
+  const { dbUuid, fetchMe } = useAuthStore();
+
+  useEffect(() => {
+    if (!dbUuid) fetchMe();
+  }, [dbUuid, fetchMe]);
+
+  if (!dbUuid) {
+    return (
+      <div style={{ padding: 40, textAlign: 'center' }}>
+        <p style={{ color: 'var(--text-3)', fontSize: 14 }}>در حال بارگذاری اطلاعات کلینیک...</p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="fade-in" style={{ display: 'flex', flexDirection: 'column', gap: 'var(--gap)' }}>
+      <div className="card-title-row">
+        <div>
+          <h1 className="section-title">پزشکان کلینیک</h1>
+          <div className="muted">مدیریت پزشکان و دعوت‌نامه‌های کلینیک</div>
+        </div>
+        <Link className="btn ghost sm" to={`/admin/clinics/${dbUuid}`}>
+          <PencilIcon style={{ width: 15, height: 15 }} /> ویرایش اطلاعات کلینیک
+        </Link>
+      </div>
+
+      <ClinicDoctorsManager clinicUuid={dbUuid} />
+    </div>
+  );
+}
+
+export default function ClinicDoctorsPage() {
+  return (
+    <SettingsLayout active="clinic-doctors">
+      <ClinicDoctorsContent />
+    </SettingsLayout>
+  );
+}