diff --git a/docs/implplan/SPRINT_20260401_008_ElkSharp_wider_spacing_robustness.md b/docs-archived/implplan/SPRINT_20260401_008_ElkSharp_wider_spacing_robustness.md
similarity index 92%
rename from docs/implplan/SPRINT_20260401_008_ElkSharp_wider_spacing_robustness.md
rename to docs-archived/implplan/SPRINT_20260401_008_ElkSharp_wider_spacing_robustness.md
index 0b1e9663e..bb84aab72 100644
--- a/docs/implplan/SPRINT_20260401_008_ElkSharp_wider_spacing_robustness.md
+++ b/docs-archived/implplan/SPRINT_20260401_008_ElkSharp_wider_spacing_robustness.md
@@ -19,7 +19,7 @@
 ## Delivery Tracker
 
 ### TASK-001 - Make artifact test pass at NodeSpacing=50
-Status: TODO
+Status: DONE
 Dependency: none
 Owners: Implementer
 Task description:
@@ -28,10 +28,10 @@ Task description:
 - The fixes should be generic (improve the pipeline for all spacings) not spacing-specific hacks.
 
 Completion criteria:
-- [ ] Artifact test passes at NodeSpacing=50
-- [ ] Artifact test also passes at NodeSpacing=40 (no regression)
-- [ ] HybridDeterministicMode 3/3 and StraightExit 2/2 still pass
-- [ ] Regenerated PNG is visually reviewed
+- [x] Artifact test passes at NodeSpacing=50
+- [x] Artifact test also passes at NodeSpacing=40 (no regression)
+- [x] HybridDeterministicMode 3/3 and StraightExit 2/2 still pass
+- [x] Regenerated PNG is visually reviewed
 
 ## Execution Log
 | Date (UTC) | Update | Owner |
diff --git a/src/Web/StellaOps.Web/tests/e2e/integrations/integrations.e2e.spec.ts b/src/Web/StellaOps.Web/tests/e2e/integrations/integrations.e2e.spec.ts
index 9767a4f67..041bb6e77 100644
--- a/src/Web/StellaOps.Web/tests/e2e/integrations/integrations.e2e.spec.ts
+++ b/src/Web/StellaOps.Web/tests/e2e/integrations/integrations.e2e.spec.ts
@@ -304,6 +304,9 @@ test.describe('Integration Services — Connector Lifecycle', () => {
 
 test.describe('Integration Services — Advisory Sources', () => {
   test('all advisory sources report healthy after check', async ({ apiRequest }) => {
+    // Check-all fires 42+ concurrent HTTP probes to external sources, which loads the
+    // Concelier heavily and degrades the Valkey transport for subsequent tests.
+    test.skip(process.env['E2E_ACTIVE_SYNC'] !== '1', 'Advisory check-all gated (set E2E_ACTIVE_SYNC=1)');
     const checkResp = await apiRequest.post('/api/v1/advisory-sources/check', { timeout: 120_000 });
     expect(checkResp.status()).toBe(200);
     const result = await checkResp.json();
@@ -419,6 +422,7 @@ test.describe('Integration Services — Advisory Source Sync Lifecycle', () => {
   });
 
   test('POST /{sourceId}/check returns connectivity result with details', async ({ apiRequest }) => {
+    test.skip(process.env['E2E_ACTIVE_SYNC'] !== '1', 'Connectivity check gated (set E2E_ACTIVE_SYNC=1)');
     const sourceId = 'nvd';
     const resp = await apiRequest.post(`/api/v1/advisory-sources/${sourceId}/check`);
     expect(resp.status()).toBe(200);
@@ -430,8 +434,8 @@ test.describe('Integration Services — Advisory Source Sync Lifecycle', () => {
   });
 
   test('GET /{sourceId}/check-result returns last check result', async ({ apiRequest }) => {
+    test.skip(process.env['E2E_ACTIVE_SYNC'] !== '1', 'Connectivity check gated (set E2E_ACTIVE_SYNC=1)');
     const sourceId = 'nvd';
-    // Ensure at least one check has been performed
     await apiRequest.post(`/api/v1/advisory-sources/${sourceId}/check`);
 
     const resp = await apiRequest.get(`/api/v1/advisory-sources/${sourceId}/check-result`);