TenantAtlas/specs/044-drift-mvp/tasks.md

description
Task list for feature 044 drift MVP

Tasks: Drift MVP (044)

Input: Design documents from specs/044-drift-mvp/ Prerequisites: plan.md (required), spec.md (required), plus research.md, data-model.md, contracts/, quickstart.md

Tests: REQUIRED (Pest) - feature introduces runtime behavior + new persistence.

Organization: Tasks are grouped by user story (Scenario 1/2/3 in spec).

Format: [ID] [P?] [Story] Description

• [P]: Can run in parallel (different files, no dependencies)
• [Story]: Which user story this task belongs to (e.g., US1, US2, US3)
• Include exact file paths in descriptions

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Phase 1: Setup (Shared Infrastructure)

Purpose: Project wiring for Drift MVP.

• T001 Create/update constitution gate checklist in specs/044-drift-mvp/checklists/requirements.md
• T002 Confirm spec/plan artifacts are current in specs/044-drift-mvp/{plan.md,spec.md,research.md,data-model.md,quickstart.md,contracts/admin-findings.openapi.yaml}
• T003 Add Drift landing page shell in app/Filament/Pages/DriftLanding.php
• T004 [P] Add Finding resource shells in app/Filament/Resources/FindingResource.php and app/Filament/Resources/FindingResource/Pages/

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Phase 2: Foundational (Blocking Prerequisites)

Purpose: Persistence + authorization + deterministic IDs that all stories depend on.

Checkpoint: DB schema exists, tenant scoping enforced, and tests can create Finding rows.

• T005 Create findings migration in database/migrations/*_create_findings_table.php with Finding fields aligned to specs/044-drift-mvp/spec.md: (tenant_id, finding_type, scope_key, baseline_run_id, current_run_id, subject_type, subject_external_id, severity, status, fingerprint unique, evidence_jsonb, acknowledged_at, acknowledged_by_user_id)
• T006 Create Finding model in app/Models/Finding.php (casts for evidence_jsonb, enums/constants for finding_type/severity/status, acknowledged_at handling)
• T007 [P] Add FindingFactory in database/factories/FindingFactory.php
• T008 Ensure InventorySyncRunFactory exists (or add it) in database/factories/InventorySyncRunFactory.php
• T009 Add authorization policy in app/Policies/FindingPolicy.php and wire it in app/Providers/AuthServiceProvider.php (or project equivalent)
• T010 Add Drift permissions in config/intune_permissions.php (view + acknowledge) and wire them into Filament navigation/actions
• T011 Enforce tenant scoping for Finding queries in app/Models/Finding.php and/or app/Filament/Resources/FindingResource.php
• T012 Implement fingerprint helper in app/Services/Drift/DriftHasher.php (sha256 per spec)
• T013 Pin scope_key = InventorySyncRun.selection_hash in app/Services/Drift/DriftScopeKey.php (single canonical definition)
• T014 Implement evidence allowlist builder in app/Services/Drift/DriftEvidence.php (new file)

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Phase 3: User Story 1 - View drift summary (Priority: P1) MVP

Goal: Opening Drift generates (async) and displays a summary of new drift findings for the latest scope.

Independent Test: With 2 successful inventory runs for the same selection hash, opening Drift dispatches generation if missing and then shows summary counts.

Tests (write first)

• T015 [P] [US1] Baseline selection tests in tests/Feature/Drift/DriftBaselineSelectionTest.php
• T016 [P] [US1] Generation dispatch tests in tests/Feature/Drift/DriftGenerationDispatchTest.php
• T017 [P] [US1] Tenant isolation tests in tests/Feature/Drift/DriftTenantIsolationTest.php
• T018 [P] [US1] Assignment drift detection test (targets + intent changes per FR2b) in tests/Feature/Drift/DriftAssignmentDriftDetectionTest.php

Implementation

• T019 [US1] Implement run selection service in app/Services/Drift/DriftRunSelector.php
• T020 [US1] Implement generator job in app/Jobs/GenerateDriftFindingsJob.php (dedupe/lock by tenant+scope+baseline+current)
• T021 [US1] Implement generator service in app/Services/Drift/DriftFindingGenerator.php (idempotent)
• T022 [US1] Implement landing behavior (dispatch + status UI) in app/Filament/Pages/DriftLanding.php
• T023 [US1] Implement summary queries/widgets in app/Filament/Pages/DriftLanding.php

---

Phase 4: User Story 2 - Drill into a drift finding (Priority: P2)

Goal: Admin can view a finding and see sanitized evidence + run references (DB-only label resolution).

Independent Test: A persisted finding renders details without Graph calls.

Tests (write first)

• T024 [P] [US2] Finding detail test in tests/Feature/Drift/DriftFindingDetailTest.php
• T025 [P] [US2] Evidence minimization test in tests/Feature/Drift/DriftEvidenceMinimizationTest.php

Implementation

• T026 [US2] Implement list UI in app/Filament/Resources/FindingResource.php (filters: status, scope_key, run)
• T027 [US2] Implement detail UI in app/Filament/Resources/FindingResource/Pages/ViewFinding.php
• T028 [US2] Implement DB-only name resolution in app/Filament/Resources/FindingResource.php (inventory/foundations caches)

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Phase 5: User Story 3 - Acknowledge/triage (Priority: P3)

Goal: Admin can acknowledge findings; new lists hide acknowledged but records remain auditable.

Independent Test: Acknowledging sets acknowledged_at + acknowledged_by_user_id and flips status.

Tests (write first)

• T029 [P] [US3] Acknowledge action test in tests/Feature/Drift/DriftAcknowledgeTest.php
• T030 [P] [US3] Acknowledge authorization test in tests/Feature/Drift/DriftAcknowledgeAuthorizationTest.php

Implementation

• T031 [US3] Add acknowledge actions in app/Filament/Resources/FindingResource.php
• T032 [US3] Implement acknowledge() domain method in app/Models/Finding.php
• T033 [US3] Ensure Drift summary excludes acknowledged by default in app/Filament/Pages/DriftLanding.php

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Phase 6: Polish & Cross-Cutting Concerns

• T034 Add DB indexes in database/migrations/*_create_findings_table.php (tenant_id+status, tenant_id+scope_key, tenant_id+baseline_run_id, tenant_id+current_run_id)
• T035 [P] Add determinism test in tests/Feature/Drift/DriftGenerationDeterminismTest.php (same baseline/current => same fingerprints)
• T036 Add job observability logs in app/Jobs/GenerateDriftFindingsJob.php (no secrets)
• T037 Add idempotency/upsert strategy in app/Services/Drift/DriftFindingGenerator.php
• T038 Ensure volatile fields excluded from hashing in app/Services/Drift/DriftHasher.php and cover in tests/Feature/Drift/DriftHasherTest.php
• T039 Validate and update specs/044-drift-mvp/quickstart.md after implementation

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Dependencies & Execution Order

• Setup (Phase 1) -> Foundational (Phase 2) -> US1 -> US2 -> US3 -> Polish

Parallel execution examples

• Foundational: T007, T008, T012, T013, T014
• US1 tests: T015, T016, T017, T018
• US2 tests: T024, T025
• US3 tests: T029, T030

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Implementation Strategy

MVP scope

• MVP = Phase 1 + Phase 2 + US1.

Format validation

• All tasks use - [ ] T### format
• Story tasks include [US1]/[US2]/[US3]
• All tasks include file paths