Plan MIL-007 and UC-002; AGPL-3.0 default only for a public GitHub project

- MIL-006: the AGPL-3.0 default needs GitHub and a public project
- MIL-007: fetch the framework's own submodules (qc); start through a command link; README usage
- UC-002 with SSD, DM, OC, SD and DCD; US-001.07 and US-002
- Reconcile the project DM, DCD, dictionary, use case diagram and traceability matrix
- Review records RC-022 to RC-028

docs/uc-002/sd.md

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+# Sequence Diagram
+
+## Metadata
+| Key | Value |
+| --- | --- |
+| ID | SD-002 |
+| CrossReference | [OC-002], [DCD-003], [DICT-001] |
+
+## Version History
+| Date | Status | Author | Reviewer | Change | Commit |
+| --- | --- | --- | --- | --- | --- |
+| 2026-10-07 | Proposed | Jens Tirsvad Nielsen | S02 | Initial version | pending |
+
+---
+
+Design objects are conceptual; in `create-project.sh` each becomes a small function group. [DCD-003] gives each object its class and turns each message below into a method signature. `ProjectCreator` and `ConfigLoader` are the design objects of [SD-001].
+
+## Sequence: startFromWorkingFolder
+
+**Realizes:** `startFromWorkingFolder` in [OC-002]
+
+### Diagram
+
+```plantuml
+@startuml
+actor Maintainer
+participant ":Launcher" as L
+participant ":ProjectCreator" as PC
+participant ":Checkout" as CK
+participant ":WorkingFolder" as WF
+
+Maintainer -> L : startFromWorkingFolder(configPath, envPath)
+activate L
+L -> L : resolveCheckout(invocation)
+create CK
+L -> CK : Checkout(path)
+L -> L : currentFolder()
+create WF
+L -> WF : WorkingFolder(path)
+alt the Checkout's own files are not found
+  L --> Maintainer : error naming the folder looked in
+end
+L -> PC : startProjectCreation(checkout, workingFolder, configPath, envPath)
+activate PC
+alt config.env or .env not found, or a value malformed
+  PC --> L : error naming the path or the key
+end
+PC --> L : promptSet
+deactivate PC
+L --> Maintainer : promptSet
+deactivate L
+@enduml
+```
+
+### Pattern Annotations
+
+| Pattern (GRASP / GoF) | Applied to | Rationale |
+| --- | --- | --- |
+| Information Expert | `Launcher.resolveCheckout` | The launcher knows how the script was invoked, so it is the one that can follow the command link |
+| Controller | `Launcher` | One object takes the system operation and hands the work to `ProjectCreator`; `ProjectCreator` stays unaware of links |
+| Low Coupling | `ProjectCreator` receives `checkout` and `workingFolder` as values | The use case [UC-001] runs unchanged whatever way the script was started |
+
+### Postcondition Coverage
+
+| Postcondition (from contract) | Satisfied by message |
+| --- | --- |
+| P1 Run | `startFromWorkingFolder` (the run starts with it) |
+| P2 Checkout | `resolveCheckout(invocation)` and the creation of `Checkout` |
+| P3 WorkingFolder | `currentFolder()` and the creation of `WorkingFolder` |
+| P4 default directory under the WorkingFolder | `startProjectCreation(checkout, workingFolder, ...)`; the prompt default is built from `workingFolder` |
+| P5 Configuration | `startProjectCreation` loads `config.env` and `.env` from `checkout` or from the given paths (`load` of [SD-001]) |
+| P6 PromptSet | the returned `promptSet` |
+| Exceptions: files not found; configuration not found or malformed | the two `alt` fragments |
+
+### Responsibility Check
+
+`Launcher` only finds the checkout and the working folder; it reads no configuration and makes no repository. `ProjectCreator` keeps every other responsibility of [SD-001].
+
+---
+
+[OC-002]: ./oc.md
+[DCD-003]: ./dcd.md
+[DICT-001]: ../dictionary.md
+[SD-001]: ../uc-001/sd.md