fix(forms): use Alpine state for password visibility toggles

Replace shared `changePasswordFieldType` JS with component-local Alpine logic
across input, textarea, and env-var-input components. This keeps toggle
behavior consistent, resets visibility on `success` events, and preserves
`truncate` styling only when showing plaintext on enabled fields.

Also adds `PasswordVisibilityComponentTest` to verify Alpine bindings are
rendered and legacy handler references are removed.

tests/Feature/PasswordVisibilityComponentTest.php

@@ -0,0 +1,41 @@
+<?php
+
+use Illuminate\Support\MessageBag;
+use Illuminate\Support\ViewErrorBag;
+
+beforeEach(function () {
+    $errors = new ViewErrorBag;
+    $errors->put('default', new MessageBag);
+    view()->share('errors', $errors);
+});
+
+it('renders password input with Alpine-managed visibility state', function () {
+    $html = Blade::render('<x-forms.input type="password" id="secret" />');
+
+    expect($html)
+        ->toContain('@success.window="type = \'password\'"')
+        ->toContain("x-data=\"{ type: 'password' }\"")
+        ->toContain("x-on:click=\"type = type === 'password' ? 'text' : 'password'\"")
+        ->toContain('x-bind:type="type"')
+        ->toContain("x-bind:class=\"{ 'truncate': type === 'text' && ! \$el.disabled }\"")
+        ->not->toContain('changePasswordFieldType');
+});
+
+it('renders password textarea with Alpine-managed visibility state', function () {
+    $html = Blade::render('<x-forms.textarea type="password" id="secret" />');
+
+    expect($html)
+        ->toContain('@success.window="type = \'password\'"')
+        ->toContain("x-data=\"{ type: 'password' }\"")
+        ->toContain("x-on:click=\"type = type === 'password' ? 'text' : 'password'\"")
+        ->not->toContain('changePasswordFieldType');
+});
+
+it('resets password visibility on success event for env-var-input', function () {
+    $html = Blade::render('<x-forms.env-var-input type="password" id="secret" />');
+
+    expect($html)
+        ->toContain("@success.window=\"type = 'password'\"")
+        ->toContain("x-on:click=\"type = type === 'password' ? 'text' : 'password'\"")
+        ->toContain('x-bind:type="type"');
+});