Current Task

Sprint 3 Planning

This task creates ONLY:

docs/02-architecture/SPRINT3_PLANNING.md

This is a planning task only.

Do NOT implement code.

Do NOT modify source files.

Do NOT modify existing documentation.

Do NOT produce an Execution Guide.

Do NOT produce a Prompt Library.

Wait for those phases separately.

---

Mandatory Reading

Review:

- AI.md v1.1
- AI_DEVELOPMENT_SYSTEM.md
- WORKFLOW.md
- PROJECT.md

Architecture

- ADR v1.0
- DBP_v1.1
- MASTER_IMPLEMENTATION_BACKLOG_v1.1

Previous Sprint Reviews

- SPRINT1_ARCHITECTURE_REVIEW.md
- SPRINT2_ARCHITECTURE_REVIEW.md

---

Objective

Develop the official Sprint 3 Planning document.

Follow the existing governance exactly.

---

Planning Requirements

Produce:

1. Sprint Objective

2. Task Breakdown

3. Dependency Order

4. Expected Files

5. Risk Assessment

6. Technical Debt Impact

7. Sprint Success Criteria

8. Estimated AI Coding Sessions

9. Security Considerations

10. Sprint Pre-checklist

---

Review

Ensure:

- Sprint 0 kernel remains frozen.
- Sprint 1 utilities remain frozen.
- Sprint 2 authentication remains frozen.
- Existing technical debt is respected.
- No undocumented architectural assumptions are introduced.

---

Output

Create only:

SPRINT3_PLANNING.md

Provide a concise planning summary.

Wait for approval.

Do not continue to the Execution Guide.