save checkpoint: save features

docs/features/checked/web/web-gateway-export-center-client.md

@@ -0,0 +1,29 @@
+# Web Gateway Export Center Client (Profiles, Runs, SSE Streaming, Distributions)
+
+## Module
+Web
+
+## Status
+VERIFIED
+
+## Description
+Web gateway client for Export Center APIs with profile/run management, SSE progress streaming, signed URL distribution handling, retention/encryption request parameters, and tenant-scoped RBAC checks.
+
+## Implementation Details
+- **Gateway client**: `src/Web/StellaOps.Web/src/app/core/api/export-center.client.ts`
+- **Contracts/models**: `src/Web/StellaOps.Web/src/app/core/api/export-center.models.ts`
+- **Focused behavior tests**:
+  - `src/Web/StellaOps.Web/src/tests/export_center/web-gateway-export-center-client.behavior.spec.ts`
+  - `src/Web/StellaOps.Web/src/tests/export_center/sarif-download-from-export-center.behavior.spec.ts`
+- **Related UI component**:
+  - `src/Web/StellaOps.Web/src/app/shared/components/export-center/sarif-download.component.ts`
+
+## Verification
+- Date (UTC): 2026-02-12
+- Run artifacts: `docs/qa/feature-checks/runs/web/web-gateway-export-center-client/run-001/`
+- Tier results:
+  - `tier0-source-check.json`: pass
+  - `tier1-build-check.json`: pass
+  - `tier2-e2e-check.json`: pass
+- Notes:
+  - Dossier path mapping was corrected during Tier 0: gateway behavior is implemented in `core/api/export-center.*`, while shared SARIF UI support remains under `shared/components/export-center/`.