Keep-going: tree shares, health flags, CI, compose, timestamp Zapier action

Directory-tree encrypted share mock; /health reports mockVerae/nats;
middleware OpenAPI extended; zappier receipt by jobId; activate Create
Timestamp (local mock or hosted); GitHub Actions test:offline; compose
builds zappier image; seed-demo.mjs.

No Zapier login or live Verae required.

packages/zappier/openapi.yaml

@@ -93,6 +93,21 @@ paths:
           description: OK
         '404':
           description: Missing
+  /v1/receipts/{jobId}:
+    get:
+      operationId: receipt
+      summary: Retrieval receipt JSON (mock job ids from /v1/timestamp)
+      parameters:
+        - name: jobId
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: OK
+        '404':
+          description: Missing
   /v1/add:
     post:
       operationId: add