docs(website): update changelog with project index and codex fixes

- Document new Project Index Tools and Editor Context enhancements
- Add notes on Zaguán Coder Daemon tweaks for gpt-5.3-codex
- Include bug fixes for GPT Codex random character generation
- Include bug fixes for GPT Codex tool execution stopping early
- Note fix for apply_patch_to_string replacing instead of adding content

src/pages/changelog.astro

@@ -41,6 +41,9 @@ import BaseLayout from '../layouts/BaseLayout.astro';
                 Enhancements
               </h3>
               <ul class="changes-list">
+                <li><strong>Project Index Tools.</strong> Added 2 new tools to retrieve the <code>project_index.md</code> file. This file can be used by the model to get an overview of the project.</li>
+                <li><strong>Editor Context.</strong> Send filenames of all open tabs in the editor to the AI model.</li>
+                <li><strong>Zaguán Coder Daemon.</strong> Working on making gpt-5.3-codex work well consistently. Minor tweaks in the system prompt and the logic.</li>
                 <li><strong>OpenAI integration.</strong> OpenAI GPT-5.3-Codex is now available in Zaguán Blade.</li>
                 <li><strong>Zaguán Coder Daemon.</strong> Tightened up the logic for Google Gemini 3.1 Pro. TTFT now 4-5x faster.</li>
                 <li><strong>Git Panel.</strong> Enhanced Git Panel to show a strikethrough for elements that are moved, renamed or deleted.</li>
@@ -54,6 +57,9 @@ import BaseLayout from '../layouts/BaseLayout.astro';
                 Bug Fixes
               </h3>
               <ul class="changes-list">
+                <li><strong>GPT Codex.</strong> Fixed a bug where, sometimes, GPT Codex model would emit characters from other languages seemingly at random.</li>
+                <li><strong>GPT Codex.</strong> Fixed a bug where gpt-5.3-codex would stop after a few tool calls.</li>
+                <li><strong>Patching.</strong> Fixed a bug in <code>apply_patch_to_string</code> that would replace instead of add new content.</li>
                 <li><strong>Local AI.</strong> Fixed a bug in the Git commit generation for Local AI where it would fail. This was due to the message being routed wrong.</li>
                 <li><strong>Welcome screen.</strong> Fixed alignment issue on the Welcome screen.</li>
                 <li><strong>Paste image.</strong> Fixed a bug where pasting images from clipboard into chat didn't work.</li>