Add Discover page E2E tests with real API fixture data

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

cypress/support/intercept.js

@@ -88,13 +88,11 @@ export function setupApiIntercepts() {
 
   // Trace detail (must be after traces list intercepts)
   cy.intercept('GET', /\/api\/logs\/.*\/traces\/\d+/, {
-    statusCode: 200,
-    body: { task_seq: [], events: [] },
+    fixture: 'api/trace-detail.json',
   }).as('getTraceDetail');
 
   cy.intercept('GET', /\/api\/filters\/.*\/traces\/\d+/, {
-    statusCode: 200,
-    body: { task_seq: [], events: [] },
+    fixture: 'api/trace-detail.json',
   }).as('getFilterTraceDetail');
 
   // Temp filters
@@ -119,13 +117,11 @@ export function setupApiIntercepts() {
 
   // Conformance check params
   cy.intercept('GET', '/api/log-checks/params*', {
-    statusCode: 200,
-    body: {},
+    fixture: 'api/filter-params.json',
   }).as('getLogCheckParams');
 
   cy.intercept('GET', '/api/filter-checks/params*', {
-    statusCode: 200,
-    body: {},
+    fixture: 'api/filter-params.json',
   }).as('getFilterCheckParams');
 
   // Dependents (for delete confirmation)