Document completed spell catalog baseline

docs/roadmap/implementation.md

@@ -2,9 +2,10 @@
 
 ## Status
 
-Ready for implementation. Follow the stages in order. This plan covers the
-accepted baseline in [D&D Spell Extraction Quality](dnd-spell-extraction.md),
-not its deferred repair-aware retry or semantic LLM-validation work.
+The accepted baseline implementation is complete through the assembled
+offline workflow. External quality evaluation remains pending as recorded in
+[D&D Spell Extraction Quality](dnd-spell-extraction.md). This plan covers that
+baseline, not its deferred repair-aware retry or semantic LLM-validation work.
 
 This active plan replaces the completed test-suite implementation record that
 previously occupied this filename. That review remains documented in