fix(classification): harden registration updates

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a02b22-9638-76d2-bbff-b7ea1770b118

workplans/ADHOC-2026-08-23.md

@@ -0,0 +1,25 @@
+---
+id: ADHOC-2026-08-23
+type: workplan
+title: "Ad hoc fixes — 2026-08-23"
+domain: infotech
+repo: state-hub
+status: finished
+owner: codex
+topic_slug: state-hub
+created: "2026-08-23"
+updated: "2026-08-23"
+---
+
+## Repair classification registration updates
+
+```task
+id: ADHOC-2026-08-23-T01
+status: done
+priority: high
+```
+
+Keep existing-repo classification PATCHes separate from Git identity metadata,
+support primary-domain reclassification through the API, and normalize
+multi-root Git histories to the same single-root fingerprint used by token
+attribution. Add regression coverage for each affected contract.