Add game data, art, constants and game logic

Add the assignment data set (50 accounts), the logo and vs art, the
constants module, and the pure functions get_random_account,
pick_pair, format_data and check_answer, all with Doxygen comments.
pick_pair never returns the same account twice; check_answer accepts
either choice on a tie. Cover them with pytest tests (22 passing).

The art is built from concatenated raw lines so the backslashes survive
and Doxygen does not read the backticks as markup.

Accept MIL-002 after review RC-005 and add it to the Traceability
Matrix.

Task: MIL-002#1
Task: MIL-002#2
Task: MIL-002#3
Task: MIL-002#4
Task: MIL-002#5
Task: MIL-002#6
Closes #6
Closes #7
Closes #8
Closes #9
Closes #10
Closes #11

docs/sqa/reviews/rc-005-mil-002.md

@@ -0,0 +1,45 @@
+# SQA Review Record: MIL-002 Game logic
+
+## Metadata
+| Key | Value |
+| --- | --- |
+| ID | RC-005 |
+| CrossReference | [MIL-002], [QC-MIL-001] |
+
+## Version History
+| Date | Status | Author | Reviewer | Change | Commit |
+| --- | --- | --- | --- | --- | --- |
+| 2026-10-04 | Accepted | Jens Tirsvad Nielsen | S01 | Initial version | pending |
+
+---
+
+## Artifact Under Review
+
+- Instance reviewed: [MIL-002]
+- Checklist used: [QC-MIL-001]
+
+## Checklist Results
+
+| # | Criterion | Status | Evidence/Notes |
+| --- | --- | --- | --- |
+| 1 | A concrete deliverable is defined for every gate | Pass | Data and art modules, constants, four named functions, Doxygen comments, pytest tests. |
+| 2 | Explicit Go/No-Go criteria are stated for each gate | Pass | Six objectively checkable criteria. |
+| 3 | Dependencies on other milestones are explicitly mapped (Optional) | Pass | Depends on MIL-001, with the reason. |
+| 4 | Each milestone is traceable to a Business Case objective or KPI | Pass | O1, O2, O3. |
+| 5 | Milestone owner and approving reviewer are identified | Pass | S01 and S01. |
+| 6 | Milestone has a target date consistent with project constraints | Pass | 2026-10-09, inside the 2026-10-14 constraint in BC-001. |
+
+## Overall Verdict
+
+Go — all criteria pass. Code under `src/` and `tests/` for MIL-002 may start once the MIL-001 deliverables exist (its dependency). MIL-003 and MIL-004 stay Proposed. Reviewer and author are both S01: the project has a single participant, so the framework's author/reviewer separation cannot be met. S01 accepted this deviation when requesting acceptance (2026-10-04).
+
+## Action Items
+
+| Action | Owner | Due |
+| --- | --- | --- |
+| Deliver MIL-001 (issues #1-#4) before starting MIL-002 tasks | S01 | 2026-10-06 |
+
+---
+
+[MIL-002]: ../../milestones/mil-002-game-logic.md
+[QC-MIL-001]: ../../../framework/qc/qc-milestones-gateways.md

docs/sqa/traceability-matrix.md

@@ -10,6 +10,7 @@
 | Date | Status | Author | Reviewer | Change | Commit |
 | --- | --- | --- | --- | --- | --- |
 | 2026-10-04 | Proposed | Jens Tirsvad Nielsen | S01 | Initial version | [a1ff735] |
+| 2026-10-04 | Proposed | Jens Tirsvad Nielsen | S01 | Added RC-005 review of MIL-002 | pending |
 
 ---
 
@@ -26,7 +27,7 @@ target is measurable. A row is added or updated whenever an artifact instance is
 | [SA-001] | SA | [BC-001] | [PP-001] | [RC-002] |
 | [PP-001] | PP | [BC-001], [SA-001] | [MIL-001], [MIL-002], [MIL-003], [MIL-004] | [RC-003] |
 | [MIL-001] | MIL | [BC-001], [PP-001] | - | [RC-004] |
-| [MIL-002] | MIL | [BC-001], [PP-001] | - | - |
+| [MIL-002] | MIL | [BC-001], [PP-001], [MIL-001] | - | [RC-005] |
 | [MIL-003] | MIL | [BC-001], [PP-001] | - | - |
 | [MIL-004] | MIL | [BC-001], [PP-001] | - | - |
 
@@ -49,3 +50,4 @@ target is measurable. A row is added or updated whenever an artifact instance is
 [RC-003]: ./reviews/rc-003-project-plan.md
 [RC-004]: ./reviews/rc-004-mil-001.md
 [a1ff735]: https://git.tirsystem.com/Tirsvad-Udemy-100_days_of_code/014-higher_lower/commit/a1ff73580fdcfad5bbb3854298fdfa0c16ada853
+[RC-005]: ./reviews/rc-005-mil-002.md