docs: add browser click workflow example

docs/add/evidence-index.md

@@ -75,6 +75,8 @@ Evidence:
 - `src/wf_sources_python/`
 - `tests/examples/test_report_workflow_example.py`
 - `tests/wf_sources_python/test_loader.py`
+- `examples/browser_click_workflow/`
+- `tests/examples/test_browser_click_workflow_example.py`
 
 ## Limitations
 

docs/add/system-design-implementation.md

@@ -931,6 +931,9 @@ single deterministic extraction node. The surrounding Python source includes
 additional capabilities used for capability discovery and extensibility
 evidence; it is not evaluated as a multi-node read -> extract -> render
 pipeline in this artifact.
+A supplemental browser-click example demonstrates a serial three-node workflow
+with bounded before/after snapshots; it is supporting evidence, not the main
+case study.
 
 (Evidence: `tests/examples/test_report_workflow_example.py`.)
 

docs/current_roadmap.md

@@ -187,6 +187,7 @@ stable.
 - 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.
+- Completed supplemental browser-click workflow example with serial multi-node lifecycle evidence.
 
 ## Historical References
 

docs/project_map.md

@@ -69,6 +69,8 @@ see [`workflow platform presentation`](add/2026-06-workflow-platform-presentatio
 - `examples/rpc_cli_smoke.py` spawns `wf-rpc-server`, runs the bounded CLI
   lifecycle from the RPC CLI smoke runbook, and cleans up. Use
   `--keep-temp` to preserve the generated config/store on failure.
+- `examples/browser_click_workflow/` is a serial browser-click workflow
+  example with bounded before/after snapshots and full lifecycle tests.
 
 ## Documentation