Plan project and set up Phase 1 skeleton

Add the framework submodule and the accepted planning documents:
Business Case, Stakeholder Analysis, Project Plan, three milestones,
review records RC-001 to RC-006 and the traceability matrix.

Set up the project skeleton for MIL-001: pyproject.toml (Python
>=3.13, no runtime dependencies, pytest/ruff/mypy as dev extra),
 src/coffee_machine/constants.py, a constants consistency test,
 Doxyfile and a CI workflow that runs ruff, mypy and pytest.

Task: MIL-001#1
Task: MIL-001#2
Task: MIL-001#3
Task: MIL-001#4
Task: MIL-001#5
Closes #1
Closes #2
Closes #3
Closes #4
Closes #5

docs/milestones/mil-002-core.md

@@ -0,0 +1,76 @@
+# Phase 2: Coffee Machine Program
+
+## Metadata
+| Key | Value |
+| --- | --- |
+| ID | MIL-002 |
+| CrossReference | [BC-001], [SA-001], [PP-001] |
+| Language | en |
+| Domain | it |
+
+## Version History
+| Date | Status | Author | Reviewer | Change | Commit |
+| --- | --- | --- | --- | --- | --- |
+| 2026-10-07 | Deprecated | Jens Tirsvad Nielsen | S01 | Initial version | pending |
+| 2026-10-07 | Accepted | Jens Tirsvad Nielsen | S01 | Accepted after RC-004 (Go) | pending |
+
+---
+
+## Purpose
+
+Decide whether the coffee machine program works as the assignment describes and is covered by tests.
+
+## Deliverable
+
+Python modules `menu`, `coffee_maker`, `money_machine` and `main` under `src/coffee_machine/`, with Doxygen comments, plus pytest tests under `tests/`.
+
+## Go / No-Go Criteria
+
+| # | Criterion (objectively checkable) | Go | No-Go |
+| --- | --- | --- | --- |
+| 1 | `Menu.get_items` and `Menu.find_drink` exist and return the menu text and the matching drink or nothing | Met | Not met |
+| 2 | `CoffeeMaker.report`, `is_resource_sufficient` and `make_coffee` exist and behave as in the assignment | Met | Not met |
+| 3 | `MoneyMachine.report` and `make_payment` exist and behave as in the assignment | Met | Not met |
+| 4 | The main loop supports drink choice, `report` and `off` and checks resources before payment | Met | Not met |
+| 5 | `pytest` passes and constants come from `constants.py` only | Met | Not met |
+| 6 | Code review against `qc-programming-python` has a Go review record | Met | Not met |
+
+## Dependencies
+
+| Depends on | Reason |
+| --- | --- |
+| MIL-001 | Needs the skeleton, configuration and CI |
+
+## Traceability
+
+| Business Case objective / KPI / user story | Reference |
+| --- | --- |
+| Objectives 1 and 2; success criteria 1 and 4 | [BC-001] |
+
+## Ownership
+
+| Role | Stakeholder ID (SA) |
+| --- | --- |
+| Owner | S01 |
+| Approving reviewer | S01 |
+
+## Target Date
+
+2026-10-14 — after Phase 1.
+
+## Tasks
+
+| # | Task | Summary | Needs its own Use Case/User Story? | Reference |
+| --- | --- | --- | --- | --- |
+| 1 | Implement Menu and MenuItem | Create `MenuItem` (name, cost, ingredients) and `Menu` with `get_items` (drink names for the prompt) and `find_drink` (returns the item or None for an unknown name), reading data from `constants.py`. | No |  |
+| 2 | Implement CoffeeMaker | Create `CoffeeMaker` holding the resources, with `report`, `is_resource_sufficient` (prints which ingredient is short) and `make_coffee` (deducts ingredients). | No |  |
+| 3 | Implement MoneyMachine | Create `MoneyMachine` with `report` (profit), and `make_payment` that processes coins, gives change, adds profit and refunds when money is insufficient. | No |  |
+| 4 | Implement main loop | Create the entry point that keeps the machine running, accepts a drink name, `report` and `off`, and checks resources before taking payment before making coffee. The course supplies the design, so no separate use case is modelled (see PP-001 Open Issues). | No |  |
+| 5 | Write pytest tests | Test each class and the main loop (with patched `input`) for sufficient and insufficient resources, exact, excess and short payment, unknown drink, report and off. | No |  |
+| 6 | Review code against qc-programming-python | Review `src/` and `tests/` against the Python checklist and record the result as an RC before the pull request. | No |  |
+
+---
+
+[BC-001]: ../business-case.md
+[SA-001]: ../stakeholder-analysis.md
+[PP-001]: ../project-plan.md