fix(adminui): auto-generate ScriptId (SC-…) + drop the Language picker on ScriptEdit

ScriptId is now system-generated on create (mirrors EquipmentId's EQ-{12 hex}
convention, never operator-supplied) and shown read-only when editing. Language
is always CSharp, so the single-option dropdown is removed entirely and set on
save.

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/ScriptEdit.razor

@@ -35,20 +35,19 @@ else
             <div class="panel-head">Identity</div>
             <div style="padding:1rem">
                 <div class="row">
-                    <div class="col-md-6 mb-3">
-                        <label class="form-label">ScriptId</label>
-                        <InputText @bind-Value="_form.ScriptId" disabled="@(!IsNew)" class="form-control form-control-sm mono" />
-                    </div>
-                    <div class="col-md-4 mb-3">
+                    @* ScriptId is system-generated (SC-…) on create, never operator-supplied —
+                       shown read-only when editing an existing script, hidden on the New page. *@
+                    @if (!IsNew)
+                    {
+                        <div class="col-md-5 mb-3">
+                            <label class="form-label">ScriptId</label>
+                            <input value="@_form.ScriptId" disabled class="form-control form-control-sm mono" />
+                        </div>
+                    }
+                    <div class="@(IsNew ? "col-md-12" : "col-md-7") mb-3">
                         <label class="form-label">Name</label>
                         <InputText @bind-Value="_form.Name" class="form-control form-control-sm" />
                     </div>
-                    <div class="col-md-2 mb-3">
-                        <label class="form-label">Language</label>
-                        <InputSelect @bind-Value="_form.Language" class="form-select form-select-sm">
-                            <option value="CSharp">CSharp</option>
-                        </InputSelect>
-                    </div>
                 </div>
             </div>
         </section>
@@ -93,7 +92,6 @@ else
                 {
                     ScriptId = _existing.ScriptId,
                     Name = _existing.Name,
-                    Language = _existing.Language,
                     SourceCode = _existing.SourceCode,
                     RowVersion = _existing.RowVersion,
                 };
@@ -111,13 +109,13 @@ else
             await using var db = await DbFactory.CreateDbContextAsync();
             if (IsNew)
             {
-                if (await db.Scripts.AnyAsync(s => s.ScriptId == _form.ScriptId))
-                { _error = $"Script '{_form.ScriptId}' already exists."; return; }
+                // ScriptId is system-generated (mirrors EquipmentId's "EQ-{12 hex}" convention);
+                // Language is always CSharp.
                 db.Scripts.Add(new Script
                 {
-                    ScriptId = _form.ScriptId,
+                    ScriptId = $"SC-{Guid.NewGuid().ToString("N")[..12]}",
                     Name = _form.Name,
-                    Language = _form.Language,
+                    Language = "CSharp",
                     SourceCode = _form.SourceCode,
                     SourceHash = sourceHash,
                 });
@@ -128,7 +126,6 @@ else
                 if (entity is null) { _error = "Row no longer exists."; return; }
                 db.Entry(entity).Property(e => e.RowVersion).OriginalValue = _form.RowVersion;
                 entity.Name = _form.Name;
-                entity.Language = _form.Language;
                 entity.SourceCode = _form.SourceCode;
                 entity.SourceHash = sourceHash;
             }
@@ -164,9 +161,9 @@ else
 
     private sealed class FormModel
     {
-        [Required, RegularExpression("^[A-Za-z0-9_-]+$")] public string ScriptId { get; set; } = "";
+        // ScriptId is system-generated, display-only (not user-entered) — no validation.
+        public string ScriptId { get; set; } = "";
         [Required] public string Name { get; set; } = "";
-        [Required] public string Language { get; set; } = "CSharp";
         [Required] public string SourceCode { get; set; } = "";
         public byte[] RowVersion { get; set; } = [];
     }