docs: update roadmap — stage 1 in progress, sample extraction complete

documentation/data-pipeline.md

@@ -314,9 +314,9 @@ These are not part of the current pipeline but are worth considering as the data
 
 ## Roadmap
 
-**Current state:** Data source migrated from OMW to Kaikki. Production schema and pipeline being rewritten on `feat/kaikki-vocabulary-schema`. Pipeline infrastructure (orchestrator, db init, reporting, tests) is in place and carries forward.
+**Current state:** Production schema migrated to Kaikki flat model. Stage 1 extraction scripts written and sample run complete (500 entries per language). pipeline.db initialised and imported with sample data. Stage 2 reverse link sync not yet written. llama.cpp not installed.
 
-**Next action:** Rewrite production schema in `packages/db`, then rewrite pipeline extraction stage for Kaikki.
+**Next action:** Write the stage 2 reverse link sync script.
 
 | Stage           | Status         |
 | --------------- | -------------- |
@@ -328,12 +328,16 @@ These are not part of the current pipeline but are worth considering as the data
 | 5. Compare / QA | 🔲 not started |
 | 6. Sync         | 🔲 not started |
 
-### Stage 1 — Extract `🔲 not started`
+### Stage 1 — Extract `🔄 in progress`
 
-- [ ] Download Kaikki JSONL files for all 5 languages
-- [ ] Write extraction script
-- [ ] Write stage 1 validation tests
-- [ ] Run extraction → `pipeline.db`
+- [x] Download Kaikki JSONL files for all 5 languages
+- [x] Write extraction script
+- [x] Write stage 1 validation tests
+- [x] Write db schema, init, and import scripts
+- [x] Write db import validation tests
+- [x] Run sample extraction → `stage-1-extract/output/{lang}.json`
+- [ ] Remove sample limit and run full extraction
+- [ ] Re-run full import → `pipeline.db`
 
 ### Stage 2 — Reverse link sync `🔲 not started`