feat(T12): Phase 1 gate — docs, SCOPE update, all tasks done

- docs/phase1-summary.md: what was built, known limitations, Phase 2 readiness
- SCOPE.md: current state updated to Phase 1 complete
- All 12 workplan tasks marked done; workplan status set to done

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

SCOPE.md

@@ -65,10 +65,10 @@ IHF treats every meaningful UI element as a **governed interaction artifact** ra
 
 ## Current State
 
-- Status: concept / early spec
-- Implementation: Phase 0 complete (specification written); Phase 1 (Minimal Interaction Core) not yet started
-- Stability: spec is draft — artifact model and vocabulary are stable enough for repo creation
-- Usage: none yet; reference implementation target is IHP + PostgreSQL
+- Status: Phase 1 complete — minimal interaction core implemented
+- Implementation: Phase 0 complete (specification); Phase 1 complete (widget registry, event capture, annotations, hub dashboard, auth)
+- Stability: core artifact model and schema are stable; API surface may evolve in Phase 2
+- Usage: reference implementation running on IHP v1.5 + PostgreSQL; `devenv up` to start
 
 ---
 
@@ -125,4 +125,4 @@ keywords: [spec, artifact, traceability, widget, decision, outcome]
 
 ## Notes
 
-Phase 0 is complete (specification foundation). Implementation begins at Phase 1 (widget registry + interaction event capture). The spec is intentionally broader than the first implementation — IHP is the reference technology for Phase 1, but the framework is designed to survive UI technology changes (§12.7, §Phase 6).
+Phase 0 (specification) and Phase 1 (Minimal Interaction Core) are complete. Phase 2 target: Structured Feedback and Triage — RequirementCandidate extraction, annotation clustering, DataSync for widget embeds. The spec is intentionally broader than the first implementation — IHP is the reference technology for Phase 1, but the framework is designed to survive UI technology changes (§12.7, §Phase 6).