Auto: abcip-3.1 — configurable CIP connection size per device

Closes #235

scripts/smoke/seed-abcip-smoke.sql

@@ -80,6 +80,11 @@ VALUES (@Gen, @EqId, @EqUuid, @DrvId, @LineId, 'ab-sim', 'abcip-001', 1);
 
 -- AB CIP DriverInstance — single ControlLogix device at the ab_server fixture
 -- gateway. DriverConfig shape mirrors AbCipDriverConfigDto.
+--
+-- The second device entry (CompactLogix L2 example, commented out) demonstrates
+-- the PR abcip-3.1 ConnectionSize override knob. Uncomment + point at a real
+-- 5069-L2 to verify the narrow-buffer Forward Open path; ab_server itself
+-- doesn't enforce the narrow cap (see docs/drivers/AbServer-Test-Fixture.md §5).
 INSERT dbo.DriverInstance(GenerationId, DriverInstanceId, ClusterId, NamespaceId,
                           Name, DriverType, DriverConfig, Enabled)
 VALUES (@Gen, @DrvId, @ClusterId, @NsId, 'ab-server-smoke', 'AbCip', N'{
@@ -90,6 +95,14 @@ VALUES (@Gen, @DrvId, @ClusterId, @NsId, 'ab-server-smoke', 'AbCip', N'{
       "PlcFamily": "ControlLogix",
       "DeviceName": "ab-server"
     }
+    /*
+    , {
+      "HostAddress": "ab://10.0.0.7/1,0",
+      "PlcFamily": "CompactLogix",
+      "DeviceName": "compactlogix-l2-narrow",
+      "ConnectionSize": 504
+    }
+    */
   ],
   "Probe": { "Enabled": true, "IntervalMs": 5000, "TimeoutMs": 2000 },
   "Tags": [