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>

backend/pytest.ini

@@ -1,5 +1,5 @@
 [pytest]
-# Pytest configuration for Apoklisis backend tests
+# Pytest configuration for Patherly backend tests
 
 # Python path - add current directory so 'app' module can be imported
 pythonpath = .