# SPRINT 3 ARCHITECTURE REVIEW

## INVEETAIRE

You are acting as the Principal Software Architect for the INVEETAIRE project.

Sprint 3 implementation is complete.

Do NOT implement code.

Do NOT refactor.

Do NOT modify files.

Perform a complete architecture review only.

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# Sprint 3 Scope

Completed implementation:

* Database Foundation
* TD-002 Security Hardening
* TD-009 Forgot Password Rate Limiting
* TD-010 Reset Token Cleanup
* WorkspaceMiddleware
* WS-001 Workspace Provisioning
* WS-002 Workspace Setup Checklist
* WS-003 Workspace Phase Evaluation

Review the implementation against the approved Sprint documentation.

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# Reference Documents

Read and compare against:

* AI.md
* DBP
* MIB
* WORKFLOW
* SPRINT3_PLANNING.md
* SPRINT3_EXECUTION_GUIDE.md

Review implementation memories where necessary.

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# Review Areas

## 1. Architecture Compliance

Verify:

* Layered Architecture
* Thin Controllers
* Service Layer ownership
* Model responsibilities
* View responsibilities
* PSR-4 structure
* Module boundaries

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## 2. Frozen Kernel

Verify:

No modifications exist to:

* app/core/*
* Router
* MiddlewarePipeline
* BaseController

Confirm the kernel remains frozen.

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## 3. Workspace Isolation

Verify:

* Workspace is the highest tenant boundary.
* Every workspace query uses workspace_id.
* No cross-workspace access exists.
* Couple cannot access another workspace.
* Crew cannot access another workspace.
* Super Admin bypass only exists through approved Support Session workflow.
* Archived workspaces remain inaccessible.
* Purged workspaces remain inaccessible.

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## 4. WorkspaceMiddleware

Verify:

* Stateless.
* No business logic.
* No provisioning.
* No checklist logic.
* No phase evaluation.
* No workspace mutation.
* Correct middleware ordering.
* Correct 403 handling.

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## 5. Workspace Provisioning

Verify:

* Transaction ownership belongs exclusively to WorkspaceService.
* No nested transactions.
* SQL exists only inside WorkspaceModel.
* Rollback on failure.
* Atomic provisioning.
* Slug uniqueness validation.
* Password handling.
* Audit logging.

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## 6. Workspace Checklist

Verify:

* Service performs evaluation.
* Model retrieves data.
* View only renders.
* Progress calculation.
* Ready-To-Send gate.
* No presentation logic outside views.

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## 7. Workspace Phase Evaluation

Verify:

* Correct lifecycle transitions.
* Terminal states remain terminal.
* No unnecessary updates.
* Audit only on transition.
* No transition loops.

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## 8. Security Review

Verify:

* CSP
* Forgot Password Rate Limiting
* Reset Token Cleanup
* SQL Injection protection
* Parameterized PDO queries
* Output escaping
* Session integrity
* No secret leakage
* Audit log safety

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## 9. Performance Review

Verify:

* No unnecessary queries.
* No duplicated validation.
* No N+1 patterns.
* Proper transaction scope.
* Middleware efficiency.

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## 10. Code Quality

Review:

* Separation of concerns.
* Naming consistency.
* Dependency direction.
* Maintainability.
* Readability.
* Future extensibility.

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## 11. Technical Debt

Identify:

* Remaining technical debt.
* Architectural risks.
* Future improvements.

Only include genuine findings.

Do not invent issues.

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## 12. Design Revision Pack (DRP)

Determine whether Sprint 3 introduced any architectural decisions that require:

* DRP

or

No DRP Required.

Explain your reasoning.

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# Output

Produce the review using this structure:

1. Executive Summary
2. Overall Architecture Score (0–100)
3. Architecture Compliance
4. Security Review
5. Performance Review
6. Code Quality Review
7. Technical Debt Review
8. Architectural Risks
9. DRP Assessment
10. Recommendations
11. Sprint 3 Verdict

The verdict must be exactly one of:

* APPROVED
* APPROVED WITH MINOR RECOMMENDATIONS
* REQUIRES CHANGES

If APPROVED, explicitly state whether Sprint 3 may be officially closed.

Do not modify code.

Do not suggest implementation unless a critical issue is discovered.