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>

app/Models/Share.php

@@ -5,6 +5,7 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 class Share extends Model
 {
@@ -62,6 +63,21 @@ class Share extends Model
         return $this->hasMany(ShareFile::class);
     }
 
+    /**
+     * The share's private text, stored as one of its files.
+     *
+     * @return HasOne<ShareFile, $this>
+     */
+    public function textFile(): HasOne
+    {
+        return $this->hasOne(ShareFile::class)->where('is_text', true);
+    }
+
+    public function hasText(): bool
+    {
+        return $this->textFile()->exists();
+    }
+
     /**
      * Whether the share was created: until then its files are still being uploaded and nobody
      * but the uploader's page may reach it.