Execute approved tool calls

crates/crank-registry/src/postgres/approval.rs

@@ -187,6 +187,49 @@ impl PostgresRegistry {
 
         row.map(map_approval_request_row).transpose()
     }
+
+    pub async fn finish_approval_request(
+        &self,
+        request: FinishApprovalRequest<'_>,
+    ) -> Result<Option<ApprovalRequestRecord>, RegistryError> {
+        let row = sqlx::query(
+            "update approval_requests
+                set status = $1,
+                    response_payload_json = $2,
+                    decision_note = coalesce($3, decision_note)
+              where workspace_id = $4
+                and agent_id = $5
+                and id = $6
+                and status = 'approved'
+              returning
+                id,
+                workspace_id,
+                agent_id,
+                operation_id,
+                operation_version,
+                status,
+                risk_level,
+                confirmation_title,
+                confirmation_body,
+                request_payload_json,
+                response_payload_json,
+                created_at,
+                expires_at,
+                decided_at,
+                decided_by_key_id,
+                decision_note",
+        )
+        .bind(serialize_enum_text(&request.status, "approval_status")?)
+        .bind(request.response_payload.as_ref().map(Json))
+        .bind(request.decision_note)
+        .bind(request.workspace_id.as_str())
+        .bind(request.agent_id.as_str())
+        .bind(request.approval_id.as_str())
+        .fetch_optional(&self.pool)
+        .await?;
+
+        row.map(map_approval_request_row).transpose()
+    }
 }
 
 fn map_approval_request_row(row: PgRow) -> Result<ApprovalRequestRecord, RegistryError> {