generated from john/python-template
Ver1 Implementation Plan, and a detailed impl plan for step 1.
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Jim Lancaster
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# Version 1 Implementation Plan
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This plan defines the path from MVP to **Version 1 complete**.
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The objective is to deliver the full scoped product with production readiness, while explicitly separating refinements/enhancements into a future document.
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---
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## 0) Plan Governance & Scope Control (Foundation)
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**Goal:** Keep execution focused on V1 completion, not optimization/perfection.
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### Implementation Steps
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1. Create and maintain a **V1 Traceability Matrix**:
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- Requirement ID
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- Current status (`done`, `partial`, `not started`)
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- Owner
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- Validation method
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2. Define V1 completion gates:
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- Functional complete
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- Operationally complete
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- Production-ready complete
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3. Snapshot the MVP baseline (tag/changelog reference).
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4. Create a standing rule: any non-V1 idea is logged to a separate enhancements backlog document (to be named later), not added to active V1 scope unless explicitly approved.
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### Deliverables
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- `docs/ver1/ver1.md` (this plan)
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- V1 traceability artifact (linked from here when created)
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### Exit Criteria
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- Every in-scope requirement has explicit ownership and status.
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- Scope-change process is agreed and followed.
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---
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## 1) Architecture Consolidation
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**Goal:** Align implementation with the intended architecture and reduce MVP shortcuts.
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### Implementation Steps
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1. Compare implemented modules/components with architecture documentation.
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2. Identify and classify architectural debt:
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- Temporary coupling
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- Missing interfaces
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- Placeholder services/components
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3. Resolve high-risk architectural gaps first.
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4. Record key decisions and tradeoffs in ADRs.
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### Deliverables
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- Updated architecture diagrams and boundaries
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- ADR entries for major decisions
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### Exit Criteria
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- Architecture documentation reflects system reality.
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- Critical architecture risks are addressed or scheduled with owners/dates.
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---
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## 2) Error Handling & Reliability Hardening
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**Goal:** Ensure predictable, safe behavior under failure conditions.
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### Implementation Steps
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1. Standardize error taxonomy and envelope format across all layers.
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2. Ensure clear distinction between:
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- User-facing errors
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- Internal/system errors
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- Retryable vs non-retryable failures
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3. Add resilience controls where needed:
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- Timeouts
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- Retries with backoff
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- Circuit breaking / fallback logic
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4. Add failure-path tests for critical workflows.
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### Deliverables
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- Error code catalog/reference
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- Failure mode test coverage for critical paths
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### Exit Criteria
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- Error behavior is consistent across major flows.
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- Known failure scenarios are tested and pass.
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---
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## 3) Functional Completion by Requirement Domain
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**Goal:** Complete all V1 functional requirements in a risk-aware order.
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### Recommended Order
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1. Business-critical end-user flows
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2. Data integrity and consistency capabilities
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3. Admin/operational controls
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4. Lower-priority UX and quality-of-life items that are in V1 scope
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### Implementation Steps
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For each requirement slice:
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1. Finalize contract/schema
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2. Implement domain logic
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3. Implement persistence/state changes
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4. Integrate API/UI
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5. Add automated tests
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6. Update docs
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### Deliverables
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- Requirement completion report with validation evidence
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### Exit Criteria
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- All V1 “must-have” requirements are complete and validated.
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---
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## 4) Data Model, Migration, and Backfill Safety
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**Goal:** Ensure data model and migrations are production-safe.
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### Implementation Steps
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1. Validate schema against final V1 domain needs.
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2. Implement forward-safe migrations.
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3. Define rollback/mitigation plans for migration failures.
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4. Build and verify backfill scripts (if needed).
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5. Add migration rehearsal in staging with representative data.
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### Deliverables
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- Migration runbook
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- Backfill verification checklist
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### Exit Criteria
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- Migration plan validated in staging.
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- No unresolved data-loss risk for V1 rollout.
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---
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## 5) Security, Access Control, and Compliance Baseline
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**Goal:** Close MVP security gaps and establish V1 baseline controls.
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### Implementation Steps
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1. Complete authn/authz coverage for all routes/actions.
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2. Enforce input validation and output sanitization.
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3. Verify secret management and credential rotation process.
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4. Add audit logging for sensitive operations.
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5. Run dependency/security scanning in CI and remediate findings.
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### Deliverables
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- Security checklist with status
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- Threat/risk update for V1 scope
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### Exit Criteria
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- No unresolved critical/high vulnerabilities for V1 launch.
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- Access control behavior verified by tests.
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---
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## 6) Observability & Operability
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**Goal:** Make system behavior observable and supportable in production.
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### Implementation Steps
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1. Standardize structured logging and correlation IDs.
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2. Add core metrics:
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- Latency
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- Throughput
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- Error rates
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- Resource saturation
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3. Add tracing for critical request/workflow paths.
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4. Define SLOs/SLIs and alert thresholds.
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5. Prepare incident response and rollback runbooks.
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### Deliverables
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- Dashboards and alerts
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- Operations runbooks
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### Exit Criteria
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- Team can detect, triage, and remediate incidents quickly.
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- Core production signals are available and reliable.
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---
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## 7) Test Strategy Expansion & Quality Gates
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**Goal:** Raise confidence for repeatable, low-risk releases.
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### Implementation Steps
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1. Expand unit and integration tests across V1 features.
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2. Add contract tests between key components/services.
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3. Add end-to-end tests for critical user journeys.
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4. Add non-functional tests where relevant:
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- Performance/load
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- Soak
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- Failure-injection scenarios
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5. Enforce CI quality gates (tests, lint, type checks, security scans).
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### Deliverables
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- Test matrix with ownership
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- CI gate definition and thresholds
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### Exit Criteria
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- Critical-path regressions are blocked automatically.
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- Test coverage and reliability thresholds meet V1 targets.
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---
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## 8) Performance & Scalability Validation
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**Goal:** Meet expected V1 performance at projected load.
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### Implementation Steps
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1. Define performance budgets per key flow.
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2. Benchmark current behavior in staging.
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3. Optimize bottlenecks (queries, caching, concurrency, etc.).
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4. Re-test after each optimization and compare against budget.
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5. Document known limits and safe operating bounds.
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### Deliverables
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- Performance benchmark report
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- Optimization log
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### Exit Criteria
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- V1 performance targets met for expected usage profile.
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---
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## 9) Release Engineering & Environment Readiness
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**Goal:** Make deployment repeatable, controlled, and reversible.
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### Implementation Steps
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1. Harden CI/CD pipeline with clear promotion gates.
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2. Ensure config parity and consistency across environments.
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3. Define rollout strategy (phased/canary/limited release as applicable).
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4. Validate rollback procedures in staging.
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5. Produce release checklist and ownership model.
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### Deliverables
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- Release playbook
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- Environment readiness checklist
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### Exit Criteria
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- Deployment and rollback are rehearsed and reliable.
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- Release process is executable without tribal knowledge.
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---
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## 10) Documentation Completion
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**Goal:** Ensure V1 can be built, operated, and supported from documentation.
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### Implementation Steps
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1. Update core project docs to match final V1 behavior:
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- Architecture
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- Error handling
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- Requirements status
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- Index/navigation
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- Intent alignment summary
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2. Add operator troubleshooting guides.
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3. Add integration/API examples for consumers.
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4. Publish changelog/version notes for V1.
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### Deliverables
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- Updated documentation set for V1
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- V1 release notes
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### Exit Criteria
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- A new team member can run/support the system using docs alone.
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---
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## 11) Final Validation, UAT, and Launch
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**Goal:** Confirm readiness and launch V1 safely.
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### Implementation Steps
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1. Run full-system acceptance validation against the V1 traceability matrix.
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2. Conduct stakeholder UAT and capture sign-off.
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3. Execute production readiness review.
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4. Launch in controlled phases and monitor key signals.
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### Deliverables
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- UAT/PRR sign-off records
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- Launch checklist and monitoring plan
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### Exit Criteria
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- Stakeholder approval achieved.
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- Launch metrics are stable within defined thresholds.
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---
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## 12) Post-Launch Stabilization (30–60 Days)
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**Goal:** Consolidate V1 in production before major expansion.
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### Implementation Steps
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1. Track incidents, defects, and user feedback.
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2. Prioritize stabilization fixes with short cycle times.
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3. Remove temporary flags/mitigations introduced during launch.
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4. Produce post-launch retrospective and handoff to standard roadmap cadence.
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### Deliverables
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- Stabilization report
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- Prioritized backlog update
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### Exit Criteria
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- Incident/error rates converge to steady-state targets.
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- V1 transitions from launch mode to normal operations.
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---
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## Recommended Execution Rhythm
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- **Weekly:** Requirement closure + risk review
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- **Biweekly:** Release train with quality gates
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- **Milestone reviews:** After phases 2, 6, 9, and 11
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---
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## Scope Discipline Rule (V1 Focus)
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To preserve delivery focus:
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- V1 execution prioritizes completion of scoped requirements.
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- Refinements/enhancements are captured in a separate future document and backlog.
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- Only explicitly approved scope changes may enter this plan.
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