Auto: abcip-3.2 — symbolic vs logical addressing toggle

Closes #236

docs/drivers/AbServer-Test-Fixture.md

@@ -38,6 +38,16 @@ quirk. UDT / alarm / quirk behavior is verified only by unit tests with
 - `--plc controllogix` and `--plc compactlogix` mode dispatch.
 - The skip-on-missing-binary behavior (`AbServerFactAttribute`) so a fresh
   clone without the simulator stays green.
+- **Symbolic vs Logical addressing wall-clock** (PR abcip-3.2,
+  `AbCipAddressingModeBenchTests`) — both modes complete + emit timing.
+  **Emulate-tier only**: `ab_server` does not currently honour the CIP Symbol
+  Object class 0x6B `cip_addr` attribute that Logical mode sets, so on the
+  fixture the two modes measure the same wire path. The bench scaffold
+  asserts both complete + records timing for human inspection; the actual
+  Symbolic-vs-Logical perf comparison requires a real ControlLogix /
+  CompactLogix on the network. See
+  [`docs/drivers/AbCip-Performance.md`](AbCip-Performance.md) §"Addressing
+  mode" for the full caveat.
 
 ## What it does NOT cover