Extracted from ../entities/tender-and-estimate.md.
🟡 Working:
- BR-095 concurrency model — explicit per-Item locking is working baseline; Oxcon to confirm or propose Google-Docs-style field-level CRDT (more elegant but complex).
- Tender Program MS Project parsing — detail in Program & Task spec.
🔴 Open:
- Multi-client Tender scope — confirmed to create separate Tenders (BR-090). Practical experience with Oxcon will validate this assumption.