Update TODO.md with Week 48 repository separation completion

✅ Week 48 Progress Update - 50% Complete

Completed Tasks:
1. ✅ Created ansible-inventories repository (PRIVATE, ID: 30)
2. ✅ Updated secrets repository with SSH keys and documentation
3. ✅ Configured git submodules for both repositories
4. ✅ Created comprehensive submodule workflow documentation
5. ✅ Made ansible-inventories PRIVATE for network topology protection
6. ✅ Updated all documentation to reflect new structure

Repository Structure Achieved:
├── infra-automation (PUBLIC) - Main code
├── inventories (PRIVATE) - Network topology protection
└── secrets (PRIVATE) - Sensitive data protection

Benefits:
- Separate version control for inventories and secrets
- Network topology protection (IPs, hostnames hidden)
- Proper access controls
- Security-first approach
- Independent update cycles

Next Priorities:
- CI/CD pipeline with Gitea Actions
- Docker security hardening

Documentation:
- docs/submodule-workflow.md: Complete guide
- README.md: Updated structure
- Both submodule READMEs updated

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

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

TODO.md

@@ -46,13 +46,15 @@
 ## Next 2 Weeks (Weeks 48-49)
 
 **Detailed Plan:** See [TASKS_WEEK_48.md](TASKS_WEEK_48.md)
+**Status:** 4/8 tasks completed (50%)
 
 ### ⚠️ High Priority (Week 48)
-- [ ] Create separate inventories public repository (P1)
-- [ ] Create separate secrets private repository (P0)
-- [ ] Set up CI/CD pipeline with Gitea Actions (P1)
-- [ ] Implement Docker security hardening (P1)
-- [ ] Git submodule integration and testing (P2)
+- [x] ✅ Create separate inventories repository - Made PRIVATE (ID: 30)
+- [x] ✅ Create separate secrets private repository - Updated and secured (ID: exists)
+- [x] ✅ Git submodule integration and testing - Both submodules operational
+- [x] ✅ Create comprehensive submodule documentation - docs/submodule-workflow.md
+- [ ] Set up CI/CD pipeline with Gitea Actions (P1) - Next priority
+- [ ] Implement Docker security hardening (P1) - Next priority
 
 ### 📋 Medium Priority
 - [ ] Add production/staging inventory configurations
@@ -100,6 +102,10 @@
 - [x] ✅ Create SSH key for git operations (secrets/ssh/ansible)
 - [x] ✅ Configure git to use SSH key authentication
 - [x] ✅ Recreate Gitea repository with proper permissions
+- [x] ✅ Separate inventories into dedicated repository (PRIVATE)
+- [x] ✅ Separate secrets into dedicated repository (PRIVATE)
+- [x] ✅ Configure git submodules for inventories and secrets
+- [x] ✅ Create submodule workflow documentation
 - [ ] Fix inventory group name sanitization
 - [x] ✅ Add audit_docker.yml playbook
 - [ ] Create testing cheatsheet