Complete rebrand from Apoklisis to Patherly

- Update all frontend branding (title, headers, login/register pages)
- Update documentation (CLAUDE-SETUP, CURRENT-STATE, PROGRESS, LESSONS-LEARNED)
- Update backend scripts and test configuration
- Fix emoji encoding in seed scripts for Windows compatibility
- Sync seed user credentials between seed_data.py and seed_trees.py
- Update database references to patherly/patherly_test

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/index.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/vite.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Apoklisis</title>
+    <title>Patherly</title>
     <script>
       // Prevent flash of wrong theme on initial load
       (function() {