diff --git a/docs/work/2026-05-14-library-evaluation-policy/08-backfill-traces/_story.md b/docs/work/2026-05-14-library-evaluation-policy/08-backfill-traces/_story.md
index 5204595..b7acb4d 100644
--- a/docs/work/2026-05-14-library-evaluation-policy/08-backfill-traces/_story.md
+++ b/docs/work/2026-05-14-library-evaluation-policy/08-backfill-traces/_story.md
@@ -3,7 +3,7 @@ id: 08-backfill-traces
 epic: 2026-05-14-library-evaluation-policy
 title: Backfill library traces for existing feature- and core-tier runtime deps
 type: technical-story
-status: todo
+status: in-progress
 feature: docs
 depends-on: [01-trace-schema-foundation]
 blocks: []
@@ -42,7 +42,7 @@ Without backfill, every existing dep becomes a pre-commit-hook failure the first
 
 ## Tasks
 
-- [ ] Inventory all runtime deps in `packages/` (run `jq '.dependencies // {} | keys' packages/*/package.json packages/core-*/package.json` or equivalent); write approved trace files for the ADR-002 cluster (`inversify`, `reflect-metadata`) in `docs/library-decisions/`; commit as `chore(deps): backfill library traces for ADR-002 cluster`.
+- [x] Inventory all runtime deps in `packages/` (run `jq '.dependencies // {} | keys' packages/*/package.json packages/core-*/package.json` or equivalent); write approved trace files for the ADR-002 cluster (`inversify`, `reflect-metadata`) in `docs/library-decisions/`; commit as `chore(deps): backfill library traces for ADR-002 cluster`.
 - [ ] Write approved trace files for the ADR-014 cluster (Sentry packages); commit as `chore(deps): backfill library traces for ADR-014 cluster`.
 - [ ] Write approved trace files for the ADR-017 cluster (OpenTelemetry packages); commit as `chore(deps): backfill library traces for ADR-017 cluster`.
 - [ ] Write approved trace files for the un-cited cluster (`payload`, `@trpc/server`, `zod`, `superjson`, and any remaining runtime deps); commit as `chore(deps): backfill library traces for un-cited cluster`; all gates pass after this final commit.
diff --git a/docs/work/_state.json b/docs/work/_state.json
index ee37612..51aebf2 100644
--- a/docs/work/_state.json
+++ b/docs/work/_state.json
@@ -1,5 +1,5 @@
 {
-  "updated_at": "2026-05-14T09:37:38.083Z",
+  "updated_at": "2026-05-14T09:42:09.916Z",
   "epics": {
     "2026-05-13-binder-wrap-helper": {
       "status": "done",
@@ -117,10 +117,10 @@
           "blocks": []
         },
         "08-backfill-traces": {
-          "status": "todo",
+          "status": "in-progress",
           "title": "Backfill library traces for existing feature- and core-tier runtime deps",
           "ac_total": 4,
-          "ac_completed": 0,
+          "ac_completed": 1,
           "depends_on": [
             "01-trace-schema-foundation"
           ],