TenantAtlas/specs/046-inventory-sync-button/spec.md

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# Feature Specification: Inventory Sync Button
**Feature Branch**: `046-inventory-sync-button`
**Created**: 2026-01-09
**Status**: Draft
**Input**: User description: "Add an Inventory Sync button"
## User Scenarios & Testing *(mandatory)*
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IMPORTANT: User stories should be PRIORITIZED as user journeys ordered by importance.
Each user story/journey must be INDEPENDENTLY TESTABLE - meaning if you implement just ONE of them,
you should still have a viable MVP (Minimum Viable Product) that delivers value.
Assign priorities (P1, P2, P3, etc.) to each story, where P1 is the most critical.
Think of each story as a standalone slice of functionality that can be:
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### User Story 1 - Run Inventory Sync from UI (Priority: P1)
As an admin, I want a button in the admin UI to start an Inventory Sync for the currently selected tenant, so I can refresh inventory data without needing CLI.
**Why this priority**: Inventory is a core admin surface; the ability to refresh on-demand reduces troubleshooting time and improves trust in the data.
**Independent Test**: Can be fully tested by clicking a "Run Inventory Sync" button and verifying a new Sync Run record appears and progresses to a terminal state.
**Acceptance Scenarios**:
1. **Given** I am viewing Inventory for a tenant, **When** I click "Run Inventory Sync", **Then** a new Inventory Sync Run is created for that tenant and work is started asynchronously.
2. **Given** a sync run is started, **When** I view in-app notifications and the progress widget, **Then** I can see the sync progress and final outcome.
3. **Given** a sync run finishes (success/partial/failed), **When** I open the Inventory Sync Runs list, **Then** the run is visible with its terminal status and error summary (if any).
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### User Story 2 - Safe feedback when sync cannot start (Priority: P2)
As an admin, I want clear feedback when an Inventory Sync cannot be started (for example due to locks or concurrency), so I understand what to do next.
**Why this priority**: Inventory sync runs are lock- and concurrency-gated; unclear failures lead to repeated clicks and confusion.
**Independent Test**: Can be tested by attempting to start a sync while another sync is already running and verifying the UI shows a clear message and does not create duplicate runs.
**Acceptance Scenarios**:
1. **Given** a sync for the same tenant/selection is already running, **When** I click "Run Inventory Sync", **Then** the system does not start a second overlapping run and provides a clear explanation.
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### User Story 3 - Permissioned access (Priority: P3)
As a tenant-scoped admin, I want only authorized users to be able to start Inventory Sync runs, so tenant data and Graph access are not triggered by unauthorized users.
**Why this priority**: Starting a sync triggers tenant-scoped Graph reads and creates operational records.
**Independent Test**: Can be tested by using a user without the required permission and verifying the action is not available or is denied.
**Acceptance Scenarios**:
1. **Given** I do not have permission to run inventory sync, **When** I view the Inventory area, **Then** I cannot trigger a sync and I receive an access denied message if I attempt it.
---
[Add more user stories as needed, each with an assigned priority]
### Edge Cases
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ACTION REQUIRED: The content in this section represents placeholders.
Fill them out with the right edge cases.
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- What happens when a sync is already running for the same tenant and selection?
- What happens when tenant credentials are missing/invalid and the sync fails early?
- What happens when the user clicks the button multiple times quickly?
- What happens when a sync is started but the UI is closed (should still finish and be observable later)?
- What happens when queue workers are down and the sync does not progress?
## Requirements *(mandatory)*
**Constitution alignment (required):** If this feature introduces any Microsoft Graph calls or any write/change behavior,
the spec MUST describe contract registry updates, safety gates (preview/confirmation/audit), tenant isolation, and tests.
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ACTION REQUIRED: The content in this section represents placeholders.
Fill them out with the right functional requirements.
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### Functional Requirements
- **FR-001**: System MUST provide an admin UI action to start an Inventory Sync for the currently selected tenant.
- **FR-002**: System MUST scope the sync to the currently selected tenant and MUST NOT allow cross-tenant initiation.
- **FR-003**: System MUST create an observable Inventory Sync Run record when a sync is started.
- **FR-004**: System MUST start the Inventory Sync asynchronously (queued/background execution), not inline in the request.
- **FR-005**: System MUST enforce existing concurrency/lock rules and MUST NOT start overlapping runs for the same tenant/selection.
- **FR-006**: System MUST show a clear success message when a run is started and a clear informational message when a run cannot be started due to locks/concurrency.
- **FR-007**: System MUST enforce authorization for starting sync runs.
- **FR-008**: System MUST record who initiated the sync run (user identity) on the run record AND in the audit trail for auditability.
- **FR-009**: System MUST provide in-app visibility into sync progress and outcome via a DB-backed notifications panel.
- **FR-010**: System MUST provide in-app visibility into sync progress and outcome via a bottom-right progress widget, consistent with the Policy Sync experience.
### Assumptions
- The Inventory Sync capability already exists and can be triggered by the application.
- An Inventory Sync Runs list/detail view already exists (or will exist) where users can observe runs.
### Dependencies
- Tenant context switching is available so the action always targets the current tenant.
- Existing concurrency/lock rules are enforced consistently for all sync starts (UI-triggered or otherwise).
- The application has an existing mechanism for DB-backed in-app notifications and a progress widget (used by Policy Sync).
*Example of marking unclear requirements:*
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### Key Entities *(include if feature involves data)*
- **Inventory Sync Run**: A record representing a single inventory sync execution for a specific tenant and selection; includes status, timestamps, and error summary.
- **Tenant**: The tenant context the user is currently operating on; determines credentials/scope for inventory sync.
- **User (Initiator)**: The authenticated user who triggered the sync run; used for auditability and access control.
## Success Criteria *(mandatory)*
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ACTION REQUIRED: Define measurable success criteria.
These must be technology-agnostic and measurable.
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### Measurable Outcomes
- **SC-001**: An authorized admin can start an Inventory Sync from the UI in under 10 seconds (time to find + click action).
- **SC-002**: In a normal tenant, 95% of sync start attempts either create a run or provide a clear lock/concurrency explanation within 2 seconds.
- **SC-003**: In usability testing, at least 90% of admins can successfully start a sync and locate the resulting run and its progress without guidance.
- **SC-004**: Support/debug time for "inventory looks stale" issues is reduced (measured as fewer repeated sync/troubleshooting requests), after rollout.