Release 2.3.0

A share can now hold a private text (a password, a key, a short note)
with its files or on its own. The upload page's new "Private text" card
takes up to 100 KB; the browser encrypts the text and sends it through
the same chunk pipeline as a file, flagged is_text on share_files, so it
gets the share's password, expiry, download limit and cleanup.

The recipient sees the text only after pressing "Show text", which
counts as their download, so a messenger link preview cannot use up a
share limited to one download. The text is left out of the file list,
the ZIP and the file counts; the admin dashboard marks shares that hold
one with "Text".

The website gains a Private text feature card and a fifth phone
screenshot; every screenshot is retaken.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/Unit/ShareServiceTest.php

@@ -332,7 +332,7 @@ test('completing a share without files is rejected', function () {
     $share = Share::factory()->pending()->create();
 
     expect(fn () => $this->service->completeShare($share))
-        ->toThrow(ValidationException::class, 'Please select at least one file to upload.');
+        ->toThrow(ValidationException::class, 'Add files or a text to share.');
 });
 
 test('completing a share with a password wraps its data key instead of storing it', function () {
@@ -355,3 +355,47 @@ test('create share stores an empty file', function () {
     expect($share->files->first()->completed_at)->not->toBeNull();
     expect(filesize($this->service->storedFilePath($share->files->first())))->toBe(FileEncryptionService::HEADER_LENGTH + FileEncryptionService::TAG_LENGTH);
 });
+
+test('a private text over the maximum length is rejected', function () {
+    $text = str_repeat('a', ShareFile::MAX_TEXT_BYTES + 1);
+
+    expect(fn () => $this->service->registerFile(null, 'text.txt', strlen($text), null, isText: true))
+        ->toThrow(ValidationException::class, 'The text is too long (maximum 100 KB).');
+    expect(Share::query()->count())->toBe(0);
+});
+
+test('a private text does not count against the admin limit of files per share', function () {
+    Setting::set('max_files_per_share', 1);
+    $file = $this->service->registerFile(null, 'one.txt', 10, null);
+
+    $text = $this->service->registerFile($file->share, 'text.txt', 20, null, isText: true);
+
+    expect($text->share_id)->toBe($file->share_id);
+    expect(ShareFile::query()->count())->toBe(2);
+});
+
+test('create share with no files and a text completes a text-only share', function () {
+    $share = $this->service->createShare([], [], 'hi');
+
+    expect($share->isCompleted())->toBeTrue();
+    expect($share->files)->toHaveCount(1);
+    expect($share->files->first()->is_text)->toBeTrue();
+    expect($share->total_size)->toBe(2);
+});
+
+test('readText decrypts a share\'s private text without a password', function () {
+    $share = $this->service->createShare([], [], 'the secret note');
+
+    $text = $this->service->readText($share, $share->encryption_key);
+
+    expect($text)->toBe('the secret note');
+});
+
+test('readText decrypts a share\'s private text with the unwrapped key of a password share', function () {
+    $share = $this->service->createShare([], ['password' => 'a-long-password'], 'the secret note');
+    $key = $this->service->getDecryptionKey($share, 'a-long-password');
+
+    $text = $this->service->readText($share, $key);
+
+    expect($text)->toBe('the secret note');
+});