docs: point markdown backlogs at Gitea issues (status lives in Gitea)

docs/drivers/AbLegacy.md

@@ -1,5 +1,8 @@
 # AB Legacy Driver
 
+> **Status lives in Gitea.** Open follow-ups and known gaps noted in this doc are tracked as issues on
+> gitea.dohertylan.com/dohertj2/lmxopcua (label `migrated`, 2026-11-06). This doc describes the system — do not track status here; file new work as an issue.
+
 In-process native-protocol driver that exposes legacy Allen-Bradley PLCs —
 **SLC 500**, **MicroLogix**, **PLC-5**, and Logix-via-PCCC — as OPC UA nodes. It
 runs inside the OtOpcUa server's .NET 10 AnyCPU process and speaks PCCC over
@@ -274,7 +277,7 @@ Simulator evidence:
   [Wire evidence](#wire-evidence-native-pccc).
 - **PLC-5 native is N-file reads only.** Every other file type and all PLC-5 writes are refused before the
   wire and reach the client as `BadNotSupported` (handle kept, health unchanged; #571 closed). Native is opt-in
-  for every family; an explicit Native on PLC-5 / `logixpccc` logs a Warning at init.
+  for every family; an explicit Native on PLC-5 / `logixpccc` logs a Warning at init. PLC-5 hardware proof → #752 (SLC/MicroLogix evidence → #592).
 - Status-bit sub-element writes (e.g. `T4:0.DN`, `C5:0.DN`) are Unsupported natively (they would clobber the
   control word); nothing goes on the wire — the driver refuses before creating the tag's runtime, so not even an
   init read is sent (`NativeAbLegacyTagRuntime.WriteRefusal` is the single predicate, asked through