# RC-010: Review of SD-001

## Metadata
| Key | Value |
| --- | --- |
| ID | RC-010 |
| CrossReference | [SD-001], [QC-SD-001] |

## Version History
| Date | Status | Author | Reviewer | Change | Commit |
| --- | --- | --- | --- | --- | --- |
| 2026-10-14 | Accepted | Jens Tirsvad Nielsen | AI as stand-in for S01 | Initial version | [c3fbcbc] |

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## Artifact Under Review

- Instance reviewed: [SD-001]
- Checklist used: [QC-SD-001]
- Scope: full review
- Language and domain: n/a (technical type)
- Language reviewer: none
- Mode: autonomous, not independent (reviewer is `AI as stand-in for S01`)

## Checklist Results

| # | Criterion | Status | Evidence/Notes |
| --- | --- | --- | --- |
| 1 | Message passing strictly follows UML sync/async/return arrow syntax | Pass | Calls are solid arrows with dashed returns. |
| 2 | GRASP/GoF patterns applied and explicitly annotated where used (e.g. Controller, Observer, Mediator, Factory) | Pass | Each sequence has a Pattern Annotations table (Creator, Information Expert, Null Object, MVVM, Repository). |
| 3 | Lifelines show activation bars matching actual processing time/call nesting | Pass | Activations are drawn for the session and the view model. |
| 4 | Object creation and destruction shown with correct UML notation (`create`/`destroy` messages, X on lifeline) | Pass | `create` is used for `Deck` and `StudySession`; no object is destroyed during the program's life and that is stated by omission, the process ends. |
| 5 | Diagram realizes the postconditions of a specific Operation Contract | Pass | Each sequence has a Postcondition Coverage table for its contract in OC-001. |
| 6 | Responsibility assignment favors low coupling/high cohesion (no god-object receiving all messages) | Pass | Responsibility Check notes state that no object receives all messages. |
| 7 | Loop, alt, and opt combined fragments used correctly for conditional/repeated behavior | Pass | `alt` and `opt` fragments are used for the progress file and the empty deck. |
| 8 | Each exception of the realized Operation Contract is shown as an `alt` or `opt` fragment, or its absence is justified | Fail | The exceptions of OC-001 (missing file, malformed file) are raised before the sequence starts and are not drawn as `alt` fragments; Optional, deferred. |

## Overall Verdict

Go — every Mandatory criterion passes; the failed Optional criteria are deferred with an action item. Reviewed by AI as stand-in for S01; not independent of the author.

## Action Items

| Action | Owner | Due |
| --- | --- | --- |
| Criterion 8 (Optional) failed: Each exception of the realized Operation Contract is shown as an `alt` or `opt` fragment, ; fix or accept the deferral | S01 | 2026-10-21 |

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[SD-001]: ../../../docs/uc-001/sd.md
[QC-SD-001]: ../../../framework/qc/artifacts/qc-sequence-diagram.md
[c3fbcbc]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/031-flash-card/commit/c3fbcbcfaf799e0ae34aed7e14d3bc8a62f03db3