feat(automation): expose group title and allow setting secondary text

Surface {{groupNow.*}} template variables (title, note, colour, times,
custom fields) in the automation template autocomplete so events inside a
group can reference their group. The runtime store already carries
groupNow, so substitution and filters worked already; this makes it
discoverable.

Extend the message-secondary action with an optional text field so an
automation can set the secondary message content, not just its source.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZYPZVdZLWowU7DyzGkWyy

apps/server/src/api-data/automation/__tests__/automation.validation.test.ts

@@ -163,5 +163,51 @@ describe('parseOutput', () => {
         secondarySource: 'secondary',
       });
     });
+
+    it('parses message-secondary with a text value', () => {
+      expect(
+        parseOutput({
+          type: 'ontime',
+          action: 'message-secondary',
+          secondarySource: 'secondary',
+          text: 'hello',
+        }),
+      ).toMatchObject({
+        secondarySource: 'secondary',
+        text: 'hello',
+      });
+      // an empty text is treated as no change
+      expect(
+        parseOutput({
+          type: 'ontime',
+          action: 'message-secondary',
+          secondarySource: 'secondary',
+          text: '',
+        }),
+      ).toMatchObject({
+        secondarySource: 'secondary',
+        text: undefined,
+      });
+      // text can be set while clearing the secondary source
+      expect(
+        parseOutput({
+          type: 'ontime',
+          action: 'message-secondary',
+          secondarySource: null,
+          text: 'hello',
+        }),
+      ).toMatchObject({
+        secondarySource: null,
+        text: 'hello',
+      });
+      expect(() =>
+        parseOutput({
+          type: 'ontime',
+          action: 'message-secondary',
+          secondarySource: 'secondary',
+          text: 123,
+        }),
+      ).toThrow('Unexpected payload type:');
+    });
   });
 });

apps/server/src/api-data/automation/automation.validation.ts

@@ -226,12 +226,21 @@ function parseOntimeAction(maybeOntimeAction: object): OntimeAction {
 
   if (maybeOntimeAction.action === 'message-secondary') {
     assert.hasKeys(maybeOntimeAction, ['secondarySource']);
+
+    // the secondary text is optional, an empty string is treated as no change
+    let text: string | undefined = undefined;
+    if ('text' in maybeOntimeAction) {
+      assert.isString(maybeOntimeAction.text);
+      text = indeterminateText(maybeOntimeAction.text);
+    }
+
     // null is used to clear the secondary source
     if (maybeOntimeAction.secondarySource === null) {
       return {
         type: 'ontime',
         action: 'message-secondary',
         secondarySource: null,
+        text,
       };
     }
 
@@ -240,6 +249,7 @@ function parseOntimeAction(maybeOntimeAction: object): OntimeAction {
       type: 'ontime',
       action: 'message-secondary',
       secondarySource: chooseSecondarySource(maybeOntimeAction.secondarySource),
+      text,
     };
   }
 

apps/server/src/api-data/automation/clients/ontime.client.ts

@@ -66,6 +66,7 @@ export function toOntimeAction(action: OntimeAction) {
         timer: {
           secondarySource: action.secondarySource,
         },
+        secondary: action.text,
       });
       break;
     }