docs: Add branch consolidation status tracking

docs/BRANCH_CONSOLIDATION_STATUS.md

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+# Branch Consolidation Status
+
+## ✅ Current Status
+
+**Main Branch**: All production-ready code consolidated  
+**Safe Updates**: 8/8 merged  
+**Breaking Changes**: 4/4 pending testing
+
+---
+
+## 📋 Consolidated Branches (8/12)
+
+### ✅ Merged to Main
+
+1. ✅ `Origin/dependabot/github_actions/actions/checkout-5`
+2. ✅ `Origin/dependabot/github_actions/actions/setup-node-6`
+3. ✅ `Origin/dependabot/github_actions/actions/upload-artifact-5`
+4. ✅ `Origin/dependabot/github_actions/softprops/action-gh-release-2`
+5. ✅ `Origin/dependabot/npm_and_yarn/orchestrator/types/express-5.0.5`
+6. ✅ `Origin/dependabot/npm_and_yarn/orchestrator/types/node-24.10.0`
+7. ✅ `Origin/dependabot/npm_and_yarn/contracts/types/chai-5.2.3`
+8. ✅ `Origin/dependabot/npm_and_yarn/orchestrator/uuid-13.0.0`
+
+---
+
+## ⚠️ Pending Branches (4/12) - Require Testing
+
+### Breaking Changes
+
+1. ⚠️ `Origin/dependabot/npm_and_yarn/orchestrator/express-5.1.0`
+   - **Express.js 4.x → 5.x** (Major breaking changes)
+   - **Action**: Test all API endpoints, update code if needed
+
+2. ⚠️ `Origin/dependabot/npm_and_yarn/contracts/hardhat-3.0.11`
+   - **Hardhat 2.x → 3.x** (Major breaking changes)
+   - **Action**: Update configuration, test compilation
+
+3. ⚠️ `Origin/dependabot/npm_and_yarn/contracts/nomicfoundation/hardhat-toolbox-6.1.0`
+   - **Hardhat Toolbox 4.x → 6.x** (Major breaking changes)
+   - **Action**: Test with Hardhat 3.x compatibility
+
+4. ⚠️ `Origin/dependabot/npm_and_yarn/contracts/chai-6.2.0`
+   - **Chai 4.x → 6.x** (Major breaking changes)
+   - **Action**: Update test assertions
+
+---
+
+## 🎯 Completion Plan
+
+### Phase 1: Safe Updates ✅
+- [x] Merge GitHub Actions updates
+- [x] Merge type definition updates
+- [x] Merge minor version updates
+- [x] Push to main
+
+### Phase 2: Breaking Changes (Next)
+- [ ] Test Express.js 5.x update
+- [ ] Test Hardhat 3.x update
+- [ ] Test Hardhat Toolbox 6.x update
+- [ ] Test Chai 6.x update
+- [ ] Fix breaking changes
+- [ ] Merge to main
+
+### Phase 3: Cleanup
+- [ ] Close merged Dependabot PRs
+- [ ] Delete merged branches
+- [ ] Update documentation
+
+---
+
+## 📊 Progress
+
+**Total Branches**: 12  
+**Consolidated**: 8 (67%) ✅  
+**Pending Testing**: 4 (33%) ⚠️
+
+---
+
+**Last Updated**: 2025-01-15  
+**Status**: Safe updates consolidated, breaking changes pending
+