Add Cypress E2E tests with fixture-based API mocking for UI regression protection

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

cypress/fixtures/api/discover.json

@@ -0,0 +1,30 @@
+{
+  "stats": {
+    "cases": { "count": 150, "total": 200, "ratio": 0.75 },
+    "traces": { "count": 45, "total": 60, "ratio": 0.75 },
+    "task_instances": { "count": 1200, "total": 1500, "ratio": 0.8 },
+    "tasks": { "count": 12, "total": 15, "ratio": 0.8 },
+    "started_at": "2025-01-01T00:00:00Z",
+    "completed_at": "2025-06-01T00:00:00Z",
+    "case_duration": {
+      "min": 3600,
+      "max": 864000,
+      "average": 172800,
+      "median": 86400
+    }
+  },
+  "graph": {
+    "nodes": [
+      { "id": "start", "label": "Start", "type": "start" },
+      { "id": "task_a", "label": "Task A", "type": "task" },
+      { "id": "task_b", "label": "Task B", "type": "task" },
+      { "id": "end", "label": "End", "type": "end" }
+    ],
+    "edges": [
+      { "source": "start", "target": "task_a", "count": 150 },
+      { "source": "task_a", "target": "task_b", "count": 120 },
+      { "source": "task_b", "target": "end", "count": 120 },
+      { "source": "task_a", "target": "end", "count": 30 }
+    ]
+  }
+}

cypress/fixtures/api/files.json

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+[
+  {
+    "type": "log",
+    "id": 1,
+    "name": "sample-process.xes",
+    "parent": null,
+    "owner": { "username": "testadmin", "name": "Test Admin" },
+    "updated_at": "2025-06-10T14:30:00Z",
+    "accessed_at": "2025-06-12T09:00:00Z",
+    "is_deleted": false
+  },
+  {
+    "type": "filter",
+    "id": 10,
+    "name": "filtered-sample",
+    "parent": { "type": "log", "id": 1, "name": "sample-process.xes" },
+    "owner": { "username": "testadmin", "name": "Test Admin" },
+    "updated_at": "2025-06-11T08:00:00Z",
+    "accessed_at": "2025-06-12T10:00:00Z",
+    "is_deleted": false
+  },
+  {
+    "type": "log",
+    "id": 2,
+    "name": "production-log.csv",
+    "parent": null,
+    "owner": { "username": "user1", "name": "Alice Wang" },
+    "updated_at": "2025-06-09T16:00:00Z",
+    "accessed_at": null,
+    "is_deleted": false
+  },
+  {
+    "type": "log-check",
+    "id": 100,
+    "name": "conformance-check-1",
+    "parent": { "type": "log", "id": 1, "name": "sample-process.xes" },
+    "owner": { "username": "testadmin", "name": "Test Admin" },
+    "updated_at": "2025-06-11T12:00:00Z",
+    "accessed_at": null,
+    "is_deleted": false
+  }
+]

cypress/fixtures/api/my-account.json

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+{
+  "username": "testadmin",
+  "name": "Test Admin",
+  "is_sso": false,
+  "created_at": "2025-01-15T10:00:00Z",
+  "roles": [
+    { "code": "admin", "name": "Administrator" }
+  ]
+}

cypress/fixtures/api/performance.json

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+{
+  "cycle_time": {
+    "labels": ["Task A", "Task B"],
+    "data": [7200, 3600]
+  },
+  "processing_time": {
+    "labels": ["Task A", "Task B"],
+    "data": [5400, 2700]
+  },
+  "waiting_time": {
+    "labels": ["Task A → Task B", "Task B → End"],
+    "data": [1800, 900]
+  },
+  "frequency": {
+    "labels": ["Task A", "Task B"],
+    "data": [150, 120]
+  }
+}

cypress/fixtures/api/token.json

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+{
+  "access_token": "fake-access-token-for-testing",
+  "token_type": "bearer",
+  "expires_in": 3600,
+  "refresh_token": "fake-refresh-token-for-testing"
+}

cypress/fixtures/api/traces.json

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+{
+  "traces": [
+    {
+      "id": "trace-001",
+      "case_id": "CASE-001",
+      "count": 50,
+      "activities": ["Task A", "Task B", "End"]
+    },
+    {
+      "id": "trace-002",
+      "case_id": "CASE-002",
+      "count": 30,
+      "activities": ["Task A", "End"]
+    }
+  ]
+}

cypress/fixtures/api/users.json

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+[
+  {
+    "username": "testadmin",
+    "name": "Test Admin",
+    "is_admin": true,
+    "is_active": true,
+    "is_sso": false,
+    "has_data": true
+  },
+  {
+    "username": "user1",
+    "name": "Alice Wang",
+    "is_admin": false,
+    "is_active": true,
+    "is_sso": false,
+    "has_data": true
+  },
+  {
+    "username": "user2",
+    "name": "Bob Chen",
+    "is_admin": false,
+    "is_active": false,
+    "is_sso": true,
+    "has_data": false
+  }
+]