Add password change doc (#563)

src/pages/selfhosted/identity-providers/local.mdx

@@ -107,6 +107,37 @@ After creation, a modal displays with:
 The generated password is only shown once at creation time. It cannot be retrieved later. Make sure to copy it and share it securely with the user.
 </Note>
 
+### Changing User Passwords
+
+The Change Password feature allows local users on self-hosted NetBird deployments to update their account password directly from the dashboard.
+
+<p>
+    <img src="/docs-static/img/selfhosted/identity-providers/local/change-password-modal.png" alt="Change Password"  className="imagewrapper"/>
+</p>
+
+
+This feature is available when:
+  - The deployment is self-hosted (not NetBird's hosted platform)
+  - The user authenticates via local authentication
+
+Users authenticated through SSO/OIDC providers will not see this option.
+
+How to Use:
+
+  1. Click your avatar in the top-right corner of the dashboard
+  2. Select "Change Password" from the dropdown menu
+  3. Enter your current password to verify your identity
+  4. Enter your new password (minimum 8 characters)
+  5. Confirm your new password
+  6. Click "Change Password" or press Enter
+
+<img src="/docs-static/img/selfhosted/identity-providers/local/change-password-menu.png" alt="Change Password"  className="imagewrapper"/>
+
+Password Requirements
+
+  - Minimum length: eight characters
+  - New password and confirmation must match
+
 ### User IdP Badges
 
 In the Users table, each user shows a badge indicating their identity provider: