docs: use valid cdevents samples in the doc

Author: davidB

.github/workflows/test.yml

@@ -8,7 +8,7 @@ on:
   workflow_dispatch:
 
 env:
-  VALID_CDEVENT: '{"context":{"version":"0.3.0","id":"test-${{ github.run_id }}","source":"github-action-test","type":"dev.cdevents.build.started.0.1.1","timestamp":"2024-01-01T00:00:00Z"},"subject":{"id":"test-subject","source":"https://github.com/test/repo"}}'
+  VALID_CDEVENT: '{"context":{"version":"0.4.1","source":"github-action-test","type":"dev.cdevents.taskrun.started.0.2.0"},"subject":{"id":"test-task-${{ github.run_id }}","source":"github-action-test","type":"taskRun","content":{"taskName":"ci-test","url":"${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"}}}'
   INVALID_CDEVENT: '{"invalid": "missing required fields"}'
 
 jobs:

README.md

@@ -19,7 +19,21 @@ jobs:
       - name: Send CDEvent
         uses: cdviz-dev/send-cdevents@v1
         with:
-          data: '{"type": "dev.cdevents.build.started.0.1.1", "source": "github-action"}'
+          data: |
+            {
+              "context": {
+                "version": "0.4.1",
+                "source": "github-actions",
+                "type": "dev.cdevents.taskrun.started.0.2.0"
+              },
+              "subject": {
+                "id": "${{ github.run_id }}",
+                "type": "taskRun",
+                "content": {
+                  "taskName": "ci-build"
+                }
+              }
+            }
           url: "https://your-webhook-endpoint.com/cdevents"
 ```
 
@@ -38,7 +52,23 @@ jobs:
       - name: Send CDEvent
         uses: cdviz-dev/send-cdevents@v1
         with:
-          data: '{"type": "dev.cdevents.build.started.0.1.1", "source": "github-action"}'
+          data: |
+            {
+              "context": {
+                "version": "0.4.1",
+                "source": "github-actions",
+                "type": "dev.cdevents.service.deployed.0.2.0"
+              },
+              "subject": {
+                "id": "${{ github.repository }}",
+                "type": "service",
+                "content": {
+                  "environment": {
+                    "id": "production"
+                  }
+                }
+              }
+            }
           url: "https://your-webhook-endpoint.com/cdevents"
           headers: |
             Authorization: Bearer ${{ secrets.API_TOKEN }}
@@ -60,7 +90,24 @@ jobs:
       - name: Send CDEvent with HMAC signature
         uses: cdviz-dev/send-cdevents@v1
         with:
-          data: '{"type": "dev.cdevents.build.started.0.1.1", "source": "github-action"}'
+          data: |
+            {
+              "context": {
+                "version": "0.4.1",
+                "source": "github-actions",
+                "type": "dev.cdevents.testcaserun.started.0.2.0"
+              },
+              "subject": {
+                "id": "${{ github.run_id }}-test",
+                "type": "testCaseRun",
+                "content": {
+                  "testCase": {
+                    "name": "Integration Tests",
+                    "type": "integration"
+                  }
+                }
+              }
+            }
           url: "https://your-webhook-endpoint.com/cdevents"
           config: |
             [sinks.http.headers.x-signature-256]
@@ -150,9 +197,45 @@ Examples:
 
 ```yaml
 with:
-  data: '{"type": "dev.cdevents.build.started.0.1.1", "source": "github-action"}'
+  data: |
+    {
+      "context": {
+        "version": "0.4.1",
+        "source": "github-actions",
+        "type": "dev.cdevents.taskrun.started.0.2.0"
+      },
+      "subject": {
+        "id": "${{ github.run_id }}",
+        "type": "taskRun",
+        "content": {
+          "taskName": "ci-build"
+        }
+      }
+    }
 ```
 
+> [!TIP]
+> The `context.id` and `context.timestamp` fields can be automatically generated by cdviz-collector if missing from your CDEvent. You can provide minimal CDEvents and let the collector handle the required metadata:
+>
+> ```yaml
+> with:
+>   data: |
+>     {
+>       "context": {
+>         "version": "0.4.1",
+>         "source": "github-actions",
+>         "type": "dev.cdevents.taskrun.started.0.2.0"
+>       },
+>       "subject": {
+>         "id": "${{ github.run_id }}",
+>         "type": "taskRun",
+>         "content": {
+>           "taskName": "ci-build"
+>         }
+>       }
+>     }
+> ```
+
 ### From File
 
 ```yaml