refactor(ECR-001): 接入 ESS 并完成结构对齐 Phase A–E

绑定 ESS 双轨治理，拆分超大 H5 页与 Go 引擎，抽出 membership 服务，
并将 star/fortune 重命名为 outlook（JSON 双写兼容）；同时修复 /psy API 代理与首页 + 菜单层级。

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/TRACEABILITY.md

@@ -0,0 +1,9 @@
+# TRACEABILITY — 愈心谷
+
+| ID | Kind | Status | Links |
+|----|------|--------|-------|
+| — | product | P1 Complete | `.ai/product/feature-map.md` · `feature-spec/` · `p1-status.md` |
+| ECR-001 | structural realignment | Phase A–E coded | PRODUCT_SPEC · ENGINEERING_SPEC · HANDOFF · ADR-0007 |
+| ECR-001-B | H5 Home/Synastry split | PASS | TEST_REPORT/ECR-001-phaseB.md · CODE_REVIEW |
+| ECR-001-A/C/D/E | docs · membership · engines · outlook | coded → review | TEST_REPORT/ECR-001-phaseA-E.md |
+| ECR-002 | fortune→outlook hygiene | Approved / coded | `docs/ECR/ECR-002-fortune-hygiene.md` |