Accept MIL-003 and add the Play a Game use case

Create the use case chain for the game loop task: Use Case Diagram UCD-001, User Stories US-001 (two stories), Use Case UC-001 and System Sequence Diagram SSD-001, all Proposed. Link them from MIL-003. Review MIL-003 (RC-006, Go) and accept it. Add the new artifacts to the Traceability Matrix and register UCD, US, UC and SSD in the artifact registry. Refs #13
2026-10-04 23:41:35 +08:00
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+# User Stories
+
+## Metadata
+| Key | Value |
+| --- | --- |
+| ID | US-001 |
+| CrossReference | [UCD-001], [UC-001], [BC-001], [MIL-003] |
+
+## Version History
+| Date | Status | Author | Reviewer | Change | Commit |
+| --- | --- | --- | --- | --- | --- |
+| 2026-10-04 | Proposed | Jens Tirsvad Nielsen | S01 | Initial version | pending |
+
+---
+
+## Purpose and Scope
+
+The stories for epic [MIL-003] (Console game): playing rounds and seeing the result. They support [BC-001] objective O1.
+
+## Story List
+
+### US-001.01 Guess which account has more followers
+
+- **As a** Player, **I want** to guess which of two accounts has more followers and keep playing while I am right, **so that** I can build a streak.
+- **Acceptance Criteria:**
+  - Given a new game, when it starts, then two different accounts A and B are shown.
+  - Given two accounts, when I guess the one with more followers, then my score goes up by one and the next round starts with that account as A and a new account as B.
+  - Given an invalid answer, when I submit it, then I am asked again and the round does not change.
+- **Traces to:** [UC-001], [MIL-003]
+- **Size:** one iteration.
+
+### US-001.02 See my final score
+
+- **As a** Player, **I want** to see my final score when the game ends, **so that** I know how well I did.
+- **Acceptance Criteria:**
+  - Given a round, when I guess the account with fewer followers, then the game ends and shows my final score.
+  - Given every account has been used, when no new account can be shown, then the game ends and shows my final score.
+- **Traces to:** [UC-001], [MIL-003]
+- **Size:** one iteration.
+
+## INVEST Check
+
+Both stories are Independent of each other in wording, Negotiable in detail, Valuable to the Player, Estimable, Small (one iteration) and Testable through the acceptance criteria. No exceptions.
+
+---
+
+[UCD-001]: ./use-case-diagram.md
+[UC-001]: ./uc-001/uc.md
+[BC-001]: ./business-case.md
+[MIL-003]: ./milestones/mil-003-console-game.md