refactor: Move Emacs config from system/ to projects/dotemacs/

- Delete deprecated system/ configuration files
- Update projects/dotemacs/modules/ with reorganized config
- Add .opencode/ directory for agent state
- Clean up attachments and unused documentation files

fedora-43-repos.repo

@@ -0,0 +1,15 @@
+[fedora]
+name=Fedora 43 - x86_64
+enabled=1
+metadata_expire=1h
+baseurl=https://mirrors.fedoraproject.org/metalink?repo=fedora-43&arch=x86_64
+type=rpm-md
+gpgcheck=0
+
+[updates]
+name=Fedora 43 - x86_64 - Updates
+enabled=1
+metadata_expire=1h
+baseurl=https://mirrors.fedoraproject.org/metalink?repo=fedora-43-updates&arch=x86_64
+type=rpm-md
+gpgcheck=0