docs: link thesis system design draft

docs/add/system-design-implementation.md

@@ -1081,6 +1081,8 @@ uv run wf --config examples/report_workflow/wf.config.json run trace <run_id> --
 
 ## Appendix B: Evidence Index
 
+See `evidence-index.md` for the full claim-to-evidence map.
+
 | Claim | Evidence |
 | --- | --- |
 | Workflow lifecycle models | `src/wf_artifacts/models.py`, `src/wf_artifacts/runs/` |

docs/current_roadmap.md

@@ -183,6 +183,9 @@ stable.
 - Completed thesis case-study evidence bundle: `examples/report_workflow/`
   provides a deterministic report workflow with Python source, fixture input,
   config, runbook, and tests.
+- Completed thesis system-design draft: `docs/add/system-design-implementation.md`
+  now frames the platform as a formal system design/implementation report backed
+  by `docs/add/evidence-index.md` and the report-workflow case study.
 
 ## Historical References
 

docs/project_map.md

@@ -70,6 +70,11 @@ see [`workflow platform presentation`](add/2026-06-workflow-platform-presentatio
   lifecycle from the RPC CLI smoke runbook, and cleans up. Use
   `--keep-temp` to preserve the generated config/store on failure.
 
+## Documentation
+
+- `docs/add/system-design-implementation.md` — formal thesis/system-design draft.
+- `docs/add/evidence-index.md` — claim-to-evidence map for the thesis draft.
+
 ## Tests
 
 - `tests/authoring`: builder, node decorator, ops, async runtime, subgraph, and