docs: Add consolidation completion summary

docs/CONSOLIDATION_COMPLETE.md

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+# Branch Consolidation Complete ✅
+
+## Summary
+
+**Date**: 2025-01-15  
+**Status**: ✅ Consolidation in Progress
+
+---
+
+## ✅ Completed Actions
+
+### 1. Safe Dependency Updates Merged
+All safe, non-breaking dependency updates have been consolidated into main:
+
+- ✅ GitHub Actions updates (4 branches)
+  - actions/checkout v5
+  - actions/setup-node v6
+  - actions/upload-artifact v5
+  - action-gh-release v2
+
+- ✅ Type Definition Updates (3 branches)
+  - @types/express 5.0.5
+  - @types/node 24.10.0
+  - @types/chai 5.2.3
+
+- ✅ Minor Updates (1 branch)
+  - uuid 13.0.0
+
+**Total Merged**: 8 safe updates
+
+### 2. Documentation Created
+- Branch consolidation plan
+- Consolidation summary
+- Dependency update plan for breaking changes
+- Consolidation scripts
+
+---
+
+## ⚠️ Pending Actions
+
+### Breaking Changes Requiring Testing (4 branches)
+
+1. **Express.js 5.1.0** - Major version update
+   - Requires testing of all API endpoints
+   - May need code updates
+
+2. **Hardhat 3.0.11** - Major version update
+   - Requires configuration updates
+   - May need test file updates
+
+3. **Hardhat Toolbox 6.1.0** - Major version update
+   - Requires compatibility testing with Hardhat 3.x
+
+4. **Chai 6.2.0** - Major version update
+   - Requires test assertion updates
+
+**Action**: These will be tested and merged separately after validation.
+
+---
+
+## 📊 Branch Status
+
+### Main Branch
+- ✅ Up to date with all production work
+- ✅ Safe dependency updates merged
+- ✅ Consolidation documentation added
+
+### Remaining Remote Branches
+- 4 Dependabot branches with breaking changes (pending testing)
+- Will be merged after testing and fixes
+
+---
+
+## 🎯 Next Steps
+
+1. **Test Breaking Changes**
+   - Express.js 5.x compatibility
+   - Hardhat 3.x configuration
+   - Chai 6.x assertions
+
+2. **Merge After Testing**
+   - Create test branches
+   - Fix any breaking changes
+   - Merge to main
+
+3. **Clean Up**
+   - Close merged Dependabot PRs
+   - Delete merged branches
+   - Update documentation
+
+---
+
+## ✅ Consolidation Status
+
+**Safe Updates**: ✅ 8/8 merged  
+**Breaking Changes**: ⚠️ 4/4 pending testing  
+**Total Branches**: 12  
+**Consolidated**: 8 (67%)  
+**Pending**: 4 (33%)
+
+---
+
+**Status**: Consolidation in progress - safe updates complete  
+**Next**: Test and merge breaking changes
+