# TRA-210 Implementation Plan (Django-First, Pending Lastenheft)

Status: partially unblocked by board stack decision (Django), still blocked on Lastenheft content.
Owner: CTO

## 1) Confirmed Constraints
- Backend stack: Django-first (board-confirmed 2026-05-06)
- Architecture decomposition must align with:
  - Django apps boundaries
  - Django auth/permissions model
  - Django ORM data model and migrations
  - DRF API surface and serializer/validation strategy
  - Celery async workload design
  - Django-native security controls and hardening

## 2) Remaining Required Inputs
- Lastenheft source: `<repo path or URL>`
- Scope constraints: `<in/out of scope>`
- Timeline constraints: `<milestones / deadlines>`
- Preferred delivery phases: `<phase model>`
- Workspace completeness confirmation: `<yes/no + details>`

## 3) Decomposition Workflow
1. Parse Lastenheft into atomic requirement IDs (`REQ-*`).
2. Map each requirement to Django domain app(s).
3. Define MVP boundary and phase slicing.
4. Convert grouped requirements into implementation epics.
5. Break epics into execution-ready tickets with acceptance criteria.
6. Sequence dependencies and identify critical path.
7. Define QA gates and release criteria.

## 4) Django-Centric Backlog Structure
For each ticket:
- Title
- Requirement IDs covered
- Django app/module target
- Description
- Acceptance criteria (testable)
- Dependencies
- Estimated effort (S/M/L)
- Owner role
- Target phase

## 5) Provisional Epic Skeleton (to map after Lastenheft ingest)
- E1: Project bootstrap and environment foundations (Django settings, env segregation, CI)
- E2: Identity and access (custom user model, auth flows, role/permission matrix)
- E3: Core domain modeling (ORM entities, constraints, migrations, admin interfaces)
- E4: API platform (DRF viewsets/serializers, versioning, pagination, error contract)
- E5: Async processing (Celery tasks, broker/result backend, retries, monitoring)
- E6: Security and compliance controls (CSRF/CORS, secret handling, audit logs, rate limiting)
- E7: Quality system (unit/integration/API tests, fixtures, coverage gates)
- E8: Observability and operations (structured logs, health checks, metrics, deployment runbooks)

## 6) Phase Skeleton
- Phase 0: Lastenheft normalization + architecture mapping
- Phase 1: Foundations (E1, baseline security from E6)
- Phase 2: MVP core delivery (E2, E3, E4)
- Phase 3: Scale/reliability (E5, E7, E8)
- Phase 4: Hardening/release readiness (full E6 + non-functional closure)

## 7) Risks and Controls
- Missing/ambiguous requirements -> clarification register tied to `REQ-*`
- Scope creep -> strict requirement-to-ticket traceability
- Integration unknowns -> time-boxed technical spikes
- Security regressions -> Django security checklist as release gate

## 8) Definition of Ready/Done
Definition of Ready:
- Requirement mapping complete
- Acceptance criteria defined
- Dependencies identified

Definition of Done:
- Acceptance criteria verified
- Tests passing
- Documentation updated
- Traceability to Lastenheft requirement IDs recorded