Make ContractClock persistence atomic

a2a.yaml

@@ -1,5 +1,5 @@
 name: contract-clock-studio-v1
-version: 0.1.0
+version: 0.1.1
 entrypoint: agent:ContractClockStudioV1
 expose:
   public: false

agent.py

@@ -43,6 +43,7 @@ ALLOWED_MEDIA_TYPES = ("text/plain", "text/markdown", "application/octet-stream"
 DATABASE_ENV = "DATABASE_URL"
 DB_STATEMENT_TIMEOUT_MS = 5_000
 DB_CONNECT_TIMEOUT_SECONDS = 3
+VERSION = "0.1.1"
 
 ISO_DATE_RE = re.compile(r"\b(20\d{2}|19\d{2})-(0[1-9]|1[0-2])-([0-2]\d|3[01])\b")
 NOTICE_RE = re.compile(
@@ -137,7 +138,7 @@ class ContractClockStudioV1(A2AAgent[ContractClockStudioV1Config, PlatformUserAu
         "extract explicit renewal and notice dates, persist the timeline in "
         "user-scoped managed Postgres, and reopen it later."
     )
-    version = "0.1.0"
+    version = VERSION
 
     config_model = ContractClockStudioV1Config
     auth_model = PlatformUserAuth
@@ -183,8 +184,8 @@ class ContractClockStudioV1(A2AAgent[ContractClockStudioV1Config, PlatformUserAu
         text: str,
         title: str,
     ) -> AnalyzeResult:
-        tenant = tenant_key(ctx)
         try:
+            tenant = tenant_key(ctx)
             clean_id = validate_contract_id(contract_id)
             clean_title = validate_title(title)
             clean_text = validate_text(text)
@@ -207,8 +208,15 @@ class ContractClockStudioV1(A2AAgent[ContractClockStudioV1Config, PlatformUserAu
         }
         receipt_id = production_receipt_id(tenant, "analyze_contract", payload)
         try:
-            persist_contract(tenant, clean_id, clean_title, payload, receipt_id)
+            persist_contract_with_receipt(
-            persist_receipt(tenant, receipt_id, "analyze_contract", clean_id, payload, "ok")
+                tenant,
+                clean_id,
+                clean_title,
+                payload,
+                receipt_id,
+                "analyze_contract",
+                "ok",
+            )
         except Exception:
             return AnalyzeResult(
                 ok=False,
@@ -309,8 +317,8 @@ class ContractClockStudioV1(A2AAgent[ContractClockStudioV1Config, PlatformUserAu
         ctx: RunContext[PlatformUserAuth],
         contract_id: str,
     ) -> ContractRecord:
-        tenant = tenant_key(ctx)
         try:
+            tenant = tenant_key(ctx)
             clean_id = validate_contract_id(contract_id)
             record = load_contract(tenant, clean_id)
         except ValidationFailure as exc:
@@ -337,10 +345,12 @@ class ContractClockStudioV1(A2AAgent[ContractClockStudioV1Config, PlatformUserAu
         cost_class="deterministic",
     )
     async def list_contracts(self, ctx: RunContext[PlatformUserAuth], limit: int = 20) -> ListContractsResult:
+        try:
             tenant = tenant_key(ctx)
             safe_limit = max(1, min(int(limit), 50))
-        try:
             rows = list_contract_rows(tenant, safe_limit)
+        except ValidationFailure as exc:
+            return ListContractsResult(ok=False, code=exc.code, message=exc.message)
         except Exception:
             return ListContractsResult(ok=False, code="persistence_unavailable", message="ContractClock could not list saved timelines.")
         return ListContractsResult(ok=True, contracts=[ContractSummary.model_validate(row) for row in rows])
@@ -481,28 +491,18 @@ def db_connection() -> Iterator[Any]:
         connect_timeout=DB_CONNECT_TIMEOUT_SECONDS,
         options=f"-c statement_timeout={DB_STATEMENT_TIMEOUT_MS} -c idle_in_transaction_session_timeout={DB_STATEMENT_TIMEOUT_MS}",
     ) as conn:
-        with conn.cursor() as cur:
-            cur.execute("SET LOCAL statement_timeout = %s", (DB_STATEMENT_TIMEOUT_MS,))
         yield conn
 
 
-def persist_contract(tenant: str, contract_id: str, title: str, payload: dict[str, Any], receipt_id: str) -> None:
+def persist_contract_with_receipt(
-    with db_connection() as conn:
+    tenant: str,
-        with conn.cursor() as cur:
+    contract_id: str,
-            cur.execute(
+    title: str,
-                """
+    payload: dict[str, Any],
-                INSERT INTO contract_timelines (tenant_key, contract_id, title, payload, receipt_id, updated_at)
+    receipt_id: str,
-                VALUES (%s, %s, %s, %s::jsonb, %s, NOW())
+    skill_name: str,
-                ON CONFLICT (tenant_key, contract_id)
+    status: str,
-                DO UPDATE SET title = EXCLUDED.title, payload = EXCLUDED.payload,
+) -> None:
-                              receipt_id = EXCLUDED.receipt_id, updated_at = NOW()
-                """,
-                (tenant, contract_id, title, json.dumps(payload), receipt_id),
-            )
-        conn.commit()
-
-
-def persist_receipt(tenant: str, receipt_id: str, skill_name: str, contract_id: str, payload: dict[str, Any], status: str) -> None:
     receipt = {
         "receipt_id": receipt_id,
         "agent": ContractClockStudioV1.name,
@@ -515,6 +515,16 @@ def persist_receipt(tenant: str, receipt_id: str, skill_name: str, contract_id:
     }
     with db_connection() as conn:
         with conn.cursor() as cur:
+            cur.execute(
+                """
+                INSERT INTO contract_timelines (tenant_key, contract_id, title, payload, receipt_id, updated_at)
+                VALUES (%s, %s, %s, %s::jsonb, %s, NOW())
+                ON CONFLICT (tenant_key, contract_id)
+                DO UPDATE SET title = EXCLUDED.title, payload = EXCLUDED.payload,
+                              receipt_id = EXCLUDED.receipt_id, updated_at = NOW()
+                """,
+                (tenant, contract_id, title, json.dumps(payload), receipt_id),
+            )
             cur.execute(
                 """
                 INSERT INTO execution_receipts (tenant_key, receipt_id, skill_name, contract_id, status, payload)

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "contract-clock-studio-v1-frontend",
   "private": true,
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "scripts": {
     "dev": "vite --host 0.0.0.0 --port 5173",

requirements.txt

@@ -1,3 +1,2 @@
 # a2a-pack is auto-installed by the deploy build.
 psycopg[binary]>=3.2
-pytest>=8.0

tests/test_full_stack_contract.py

@@ -82,21 +82,30 @@ def test_acceptance_success_reload_failure_and_receipt_persistence():
     saved = {}
     receipts = []
 
-    def fake_persist_contract(tenant, contract_id, title, payload, receipt_id):
+    def fake_persist_contract_with_receipt(
+        tenant,
+        contract_id,
+        title,
+        payload,
+        receipt_id,
+        skill_name,
+        status,
+    ):
         assert tenant == "user:123"
         saved[(tenant, contract_id)] = {
             "payload": payload,
             "receipt_id": receipt_id,
             "updated_at": "2026-01-01T00:00:00+00:00",
         }
+        receipts.append((tenant, receipt_id, skill_name, contract_id, status))
 
     def fake_load_contract(tenant, contract_id):
         return saved.get((tenant, contract_id))
 
-    def fake_persist_receipt(tenant, receipt_id, skill_name, contract_id, payload, status):
+    with patch(
-        receipts.append((tenant, receipt_id, skill_name, contract_id, status))
+        "agent.persist_contract_with_receipt",
-
+        side_effect=fake_persist_contract_with_receipt,
-    with patch("agent.persist_contract", side_effect=fake_persist_contract), patch("agent.load_contract", side_effect=fake_load_contract), patch("agent.persist_receipt", side_effect=fake_persist_receipt):
+    ), patch("agent.load_contract", side_effect=fake_load_contract):
         result = asyncio.run(agent.analyze_contract(ctx(), contract_id="studio-contract-v1", text=SUCCESS_TEXT, title="Studio Renewal Agreement"))
         assert result.ok is True
         assert result.persisted is True
@@ -124,7 +133,7 @@ def test_acceptance_success_reload_failure_and_receipt_persistence():
 def test_browser_upload_bridge_bounds_and_reuses_workflow():
     agent = ContractClockStudioV1()
     encoded = base64.b64encode(SUCCESS_TEXT.encode("utf-8")).decode("ascii")
-    with patch("agent.persist_contract", return_value=None), patch("agent.persist_receipt", return_value=None):
+    with patch("agent.persist_contract_with_receipt", return_value=None):
         result = asyncio.run(
             agent.analyze_contract_browser_upload(
                 ctx(),
@@ -146,6 +155,31 @@ def test_browser_upload_bridge_bounds_and_reuses_workflow():
     assert bad.ok is False and bad.code == "invalid_base64"
 
 
+def test_tools_return_structured_auth_failure_for_missing_principal():
+    anonymous = LocalRunContext(
+        auth=PlatformUserAuth(sub=""),
+        caller="tester",
+    )
+    agent = ContractClockStudioV1()
+
+    analyzed = asyncio.run(
+        agent.analyze_contract(
+            anonymous,
+            contract_id="studio-contract-v1",
+            text=SUCCESS_TEXT,
+            title="Studio Renewal Agreement",
+        )
+    )
+    loaded = asyncio.run(
+        agent.get_contract_deadlines(anonymous, contract_id="studio-contract-v1")
+    )
+    listed = asyncio.run(agent.list_contracts(anonymous))
+
+    assert analyzed.ok is False and analyzed.code == "auth_required"
+    assert loaded.ok is False and loaded.code == "auth_required"
+    assert listed.ok is False and listed.code == "auth_required"
+
+
 def test_receipt_id_is_deterministic_without_secrets():
     payload = {"contract_id": "studio-contract-v1", "deadlines": [{"kind": "renewal", "date": "2026-12-31"}]}
     receipt = production_receipt_id("user:123", "analyze_contract", payload)