docs(handoff): Phase 2A complete — all 19 tasks, PR #193 open

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.ai/CURRENT_TASK.md

@@ -1,6 +1,8 @@
 # CURRENT_TASK.md
 
-**Active task:** Phase O cutover for self-serve signup. All code blockers are now closed on `main`. Only user-side manual ops remain: apex DNS fix at Namecheap, Stripe Dashboard live-mode config (with the new `/contact` and `/policies` URLs surfaced in the business profile), Railway prod env vars, internal validation pass, public flag flip. See `.ai/HANDOFF.md` for the resume point.
+**Active task:** L1 AI Tree Builder **Phase 2A — implementation complete, in review as PR #193** (`feat/l1-ai-tree-builder-phase-2a` → `main`). All 19 plan tasks done; full backend suite 1387 passed/0 failed; frontend tsc+lint+build clean; migrations roundtrip clean. Resume point = check Gitea CI on #193, review, merge; then prod `alembic upgrade head` + a live AI-quality smoke/benchmark before wide enablement (spec §5.3). See `.ai/HANDOFF.md`.
+
+**Parallel (user-side, blocked):** Phase O cutover for self-serve signup — all code blockers closed on `main`; only user-side manual ops remain (apex DNS at Namecheap, Stripe Dashboard live-mode config with the `/contact` + `/policies` URLs, Railway prod env vars, internal validation, public flag flip), gated on the EIN.
 
 ## Recently shipped