Add planning baseline: business case, stakeholders, plan, milestones and reviews

Mount the SQA/QC framework and add BC-001, SA-001, PP-001, MIL-001 to MIL-008, review records RC-001 to RC-010 and the traceability matrix. Task: MIL-001#1 Task: MIL-001#2
2026-10-13 13:50:39 +08:00
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+# MIL-004 Cars
+
+## Metadata
+| Key | Value |
+| --- | --- |
+| ID | MIL-004 |
+| CrossReference | [BC-001], [PP-001] |
+| Language | en |
+| Domain | it |
+
+## Version History
+| Date | Status | Author | Reviewer | Change | Commit |
+| --- | --- | --- | --- | --- | --- |
+| 2026-10-13 | Accepted | Jens Tirsvad Nielsen | AI as stand-in for S01 | Initial version | pending |
+
+---
+
+## Purpose
+
+Decide that cars are generated, drawn as cars and moved correctly.
+
+## Deliverable
+
+A CarManager with create_cars and move_cars, and a registered car shape that shows a body, cabin and two wheels inside a 40 x 20 px footprint.
+
+## Go / No-Go Criteria
+
+| # | Criterion (objectively checkable) | Go | No-Go |
+| --- | --- | --- | --- |
+| 1 | Cars are generated at random y values, never in the top or bottom 50 px | Test over many samples | A car appears in the safe zone |
+| 2 | A new car is created on one in six loop runs | Test of the spawn rule | Wrong rate |
+| 3 | Cars move right to left by the current speed | Test of position change | Wrong direction |
+| 4 | Each car is drawn as a car, not a colour block, using the standard library only | Visual check and shape registration in code | A plain rectangle is shown or an image file is needed |
+
+## Dependencies
+
+| Depends on | Reason |
+| --- | --- |
+| MIL-003 | The previous step of the assignment must be accepted first |
+
+## Traceability
+
+| Business Case objective / KPI / user story | Reference |
+| --- | --- |
+| Objectives 1, 2 (step 2, bullet 2) | [BC-001] |
+
+## Ownership
+
+| Role | Stakeholder ID (SA) |
+| --- | --- |
+| Owner | S01 |
+| Approving reviewer | S01 |
+
+## Target Date
+
+2026-10-19 - within the two-week plan of [PP-001].
+
+## Tasks
+
+| # | Task | Summary | Needs its own Use Case/User Story? | Reference |
+| --- | --- | --- | --- | --- |
+| 1 | Design the car shape | Draw a car silhouette as a compound turtle Shape: lower body, cabin with window, two wheels, 40 x 20 px, pointing left. Register it once with register_shape. The colour comes from COLORS. | No |  |
+| 2 | Implement create_cars | Random colour and random y inside the safe-zone limits, one car in six loop runs, each car using the registered shape. | No |  |
+| 3 | Implement move_cars | Move every car left by the current speed and drop cars that left the screen. | No |  |
+| 4 | Test CarManager | Pytest tests for spawn rule, safe zone and movement, with the display parts separated from the logic. | No |  |
+
+---
+
+[BC-001]: ../business-case.md
+[PP-001]: ../project-plan.md