fix: wait out processing until the certificate exists

A global stamp now polls status processing the same way as pending
and returns only the completed result. The debug trace for
Verae-Debug-Test records one receipt id.

src/verae_mcp_timestamping_server/global_client.py

@@ -375,14 +375,14 @@ class GlobalClient:
             raise ValueError(f"global timestamp HTTP {res.status_code}: {res.text}")
         if not isinstance(parsed, dict):
             parsed = {}
-        job_id = parsed.get("jobId") or parsed.get("blockHash") or ""
+        job_id = str(parsed.get("jobId") or parsed.get("blockHash") or "")
         if not job_id:
             raise ValueError("global timestamp response missing jobId")
         created = str(parsed.get("timestamp") or "")
         merkle = str(parsed.get("blockHash") or "")
-        receipt_id = str(job_id)
+        receipt_id = ""
         status_url = f"{self.base_url}/api/status/{job_id}"
-        for _ in range(20):
+        for _ in range(40):
             st = self.http.request("GET", status_url, payload={}, headers=self._headers())
             if st.status_code >= 300:
                 break
@@ -393,15 +393,19 @@ class GlobalClient:
             if state == "failed":
                 raise ValueError(str(body.get("error") or "global timestamp job failed"))
             if state == "completed":
-                receipt_id = str(body.get("result") or body.get("id") or job_id)
+                receipt_id = str(body.get("result") or "")
                 meta = body.get("metadata") or {}
                 created = str(meta.get("timestamp") or body.get("completedAt") or created)
                 merkle = str(meta.get("blockIndex") or meta.get("blockHash") or merkle)
+                if receipt_id:
                     break
-            if state in ("pending", "running", ""):
+                receipt_id = ""
+            if state in ("pending", "running", "processing", ""):
                 time.sleep(0.25)
                 continue
             break
+        if not receipt_id:
+            raise ValueError(f"global timestamp job {job_id} not completed")
         return Receipt(
             receipt_id=receipt_id,
             hash=digest,

tests/test_global_client.py

@@ -97,6 +97,38 @@ async def test_existing_digest_returns_first_certificate_without_status_poll():
     assert len(http.calls) == 1
 
 
+async def test_processing_status_polls_until_certificate():
+    class ProcessingHttp(FakeHttp):
+        def __init__(self):
+            super().__init__()
+            self.status_calls = 0
+
+        def request(self, method, url, payload, headers):
+            self.calls.append((method, url, payload, headers))
+            if url.endswith("/api/timestamp"):
+                return _Resp(202, {"jobId": "job-p"})
+            if url.endswith("/api/status/job-p"):
+                self.status_calls += 1
+                if self.status_calls < 3:
+                    return _Resp(200, {"id": "job-p", "status": "processing"})
+                return _Resp(
+                    200,
+                    {
+                        "id": "job-p",
+                        "status": "completed",
+                        "result": "QmDone",
+                        "metadata": {"timestamp": "2026-09-23T00:00:00Z", "blockHash": "0xabc"},
+                    },
+                )
+            return _Resp(404, {"error": "nope"})
+
+    http = ProcessingHttp()
+    rec = GlobalClient("https://api.veraetime.net", http=http).submit(SHA256_EMPTY)
+    assert rec.receipt_id == "QmDone"
+    assert rec.receipt_id != "job-p"
+    assert http.status_calls == 3
+
+
 async def test_existing_without_certificate_polls_job():
     class PendingExisting(FakeHttp):
         def request(self, method, url, payload, headers):