Merge R2-11 TagConfig consolidation (arch-review round 2) [PR #434]

Findings 01/C-1, 01/P-1 (single TagConfigIntent.Parse in Commons, 4 copies
delegate, parse-once) + 05 CONV-2/UNDER-1/UNDER-6 (shared strict TagConfigJson
readers, per-driver Inspect() + writable key, FOCAS capability pre-flight,
Modbus probe timeoutMs, deploy-gate Warn|Error). Phase C runtime-strict flip
deferred. T22/T24 deferred. Auto-merged AddressSpaceApplier.cs + DriverHostActor.cs
with R2-04/R2-10; verified OpcUaServer.Tests 286/286 + Runtime.Tests 396/396.
Build clean.

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/AbCipTagConfigEditor.razor

@@ -17,6 +17,14 @@
         <select class="form-select form-select-sm" value="@_m.DataType" @onchange="@(e => Update(() => _m.DataType = ParseEnum(e.Value, AbCipDataType.DInt)))">
             @foreach (var v in Enum.GetValues<AbCipDataType>()) { <option value="@v">@v</option> }
         </select></div>
+    <div class="col-12">
+        <div class="form-check">
+            <input type="checkbox" class="form-check-input" id="abcip-writable"
+                   checked="@(_m.Writable ?? true)"
+                   @onchange="@(e => Update(() => _m.Writable = e.Value is bool b && b))" />
+            <label class="form-check-label small" for="abcip-writable">Writable (uncheck for a read-only tag)</label>
+        </div>
+    </div>
 </div>
 
 @if (_showPicker)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/AbLegacyTagConfigEditor.razor

@@ -17,6 +17,14 @@
         <select class="form-select form-select-sm" value="@_m.DataType" @onchange="@(e => Update(() => _m.DataType = ParseEnum(e.Value, AbLegacyDataType.Int)))">
             @foreach (var v in Enum.GetValues<AbLegacyDataType>()) { <option value="@v">@v</option> }
         </select></div>
+    <div class="col-12">
+        <div class="form-check">
+            <input type="checkbox" class="form-check-input" id="ablegacy-writable"
+                   checked="@(_m.Writable ?? true)"
+                   @onchange="@(e => Update(() => _m.Writable = e.Value is bool b && b))" />
+            <label class="form-check-label small" for="ablegacy-writable">Writable (uncheck for a read-only tag)</label>
+        </div>
+    </div>
 </div>
 
 @if (_showPicker)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/FocasTagConfigEditor.razor

@@ -17,6 +17,12 @@
         <select class="form-select form-select-sm" value="@_m.DataType" @onchange="@(e => Update(() => _m.DataType = ParseEnum(e.Value, FocasDataType.Int32)))">
             @foreach (var v in Enum.GetValues<FocasDataType>()) { <option value="@v">@v</option> }
         </select></div>
+    <div class="col-12">
+        <div class="form-check">
+            <input type="checkbox" class="form-check-input" id="focas-writable" disabled checked="false" />
+            <label class="form-check-label small text-muted" for="focas-writable">Writable — FOCAS writes are unsupported; tags are read-only.</label>
+        </div>
+    </div>
 </div>
 
 @if (_showPicker)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/ModbusTagConfigEditor.razor

@@ -25,6 +25,14 @@
     <div class="col-12 mt-1">
         <button type="button" class="btn btn-sm btn-outline-secondary" @onclick="@(() => _showPicker = true)">Build address</button>
     </div>
+    <div class="col-12">
+        <div class="form-check">
+            <input type="checkbox" class="form-check-input" id="modbus-writable"
+                   checked="@(_m.Writable ?? true)"
+                   @onchange="@(e => Update(() => _m.Writable = e.Value is bool b && b))" />
+            <label class="form-check-label small" for="modbus-writable">Writable (uncheck for a read-only tag)</label>
+        </div>
+    </div>
 </div>
 
 @if (_showPicker)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/S7TagConfigEditor.razor

@@ -17,6 +17,14 @@
         </select></div>
     <div class="col-md-3"><label class="form-label">String len</label>
         <input type="number" class="form-control form-control-sm" value="@_m.StringLength" @onchange="@(e => Update(() => _m.StringLength = ParseInt(e.Value)))" /></div>
+    <div class="col-12">
+        <div class="form-check">
+            <input type="checkbox" class="form-check-input" id="s7-writable"
+                   checked="@(_m.Writable ?? true)"
+                   @onchange="@(e => Update(() => _m.Writable = e.Value is bool b && b))" />
+            <label class="form-check-label small" for="s7-writable">Writable (uncheck for a read-only tag)</label>
+        </div>
+    </div>
 </div>
 
 @if (_showPicker)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/TwinCATTagConfigEditor.razor

@@ -17,6 +17,14 @@
         <select class="form-select form-select-sm" value="@_m.DataType" @onchange="@(e => Update(() => _m.DataType = ParseEnum(e.Value, TwinCATDataType.DInt)))">
             @foreach (var v in Enum.GetValues<TwinCATDataType>()) { <option value="@v">@v</option> }
         </select></div>
+    <div class="col-12">
+        <div class="form-check">
+            <input type="checkbox" class="form-check-input" id="twincat-writable"
+                   checked="@(_m.Writable ?? true)"
+                   @onchange="@(e => Update(() => _m.Writable = e.Value is bool b && b))" />
+            <label class="form-check-label small" for="twincat-writable">Writable (uncheck for a read-only tag)</label>
+        </div>
+    </div>
 </div>
 
 @if (_showPicker)