Finish repository foundation workplan

CLAUDE.md

@@ -13,8 +13,9 @@ At session start, orient from:
 2. `INTENT.md`
 3. `wiki/ProductRequirementsDocument.md`
 4. `wiki/FunctionalRequirementsSpecification.md`
-5. `docs/markitect-main-scope-assessment.md`
-6. Active files in `workplans/`
+5. `docs/stack-decision.md`
+6. `docs/markitect-main-scope-assessment.md`
+7. Active files in `workplans/`
 
 ## State Hub
 
@@ -73,6 +74,23 @@ Prefer clean reimplementation around the new PRD/FRS. Use `markitect-main` as
 reference material for behavior, tests, and domain vocabulary, not as an
 architecture to copy wholesale.
 
+## Stack And Commands
+
+- Python target: 3.12+
+- Distribution: `kontextual-engine`
+- Import package: `kontextual_engine`
+- Build backend: `setuptools`
+- Test runner: `pytest`
+- Source layout: `src/kontextual_engine`
+- Service framework: FastAPI as an optional boundary after the programmatic API
+  stabilizes
+
+Run tests:
+
+```bash
+python3 -m pytest
+```
+
 ## Workplans
 
 Workplans live in `workplans/` and follow the Custodian ADR-001 convention:
@@ -81,4 +99,3 @@ Workplans live in `workplans/` and follow the Custodian ADR-001 convention:
   kontextual-engine`, and `owner: codex`.
 - Tasks are embedded as headed sections with fenced `task` blocks.
 - State Hub may index these files, but the files remain authoritative.
-