docs: remove all Coolify references from codebase

Replace Coolify with Docker Compose throughout documentation.
The project never used Coolify - a removal script was created but
never executed, leaving incorrect documentation.

Changes:
- Delete 13 heavily Coolify-focused docs files
- Update ~30 files replacing Coolify → Docker Compose
- Remove obsolete removal script
- Fix deployment references in active and archived projects

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps-archived/uload/docs/POCKETBASE_ADMIN.md

@@ -4,7 +4,7 @@
 
 ### 1. Admin-Account erstellen
 
-In Coolify Dashboard → uLoad App → **Terminal**:
+In Docker container → uLoad App → **Terminal**:
 
 ```bash
 ./pocketbase superuser create