doc(OpcDa): add MockOpcDaServer sample code

[ArgoZhang]

Link issues

fixes #6562

Summary By Copilot

Regression?

• Yes
• No

Risk

• High
• Medium
• Low

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Merge the latest code from the main branch

Summary by Sourcery

Add a new OPC DA sample page and integrate a mock or real OPC DA server registration based on the operating system.

New Features:

• Register the real OPC DA server on Windows and a mock implementation on non-Windows platforms in the service collection.
• Add a new "OpcDa" demo page with UI and logic for connecting, reading tag values, and subscribing to data changes.
• Introduce a new menu entry pointing to the OPC DA sample.

Documentation:

• Provide Razor and C# sample components demonstrating OPC DA usage.
• Add localization entries and documentation configuration for the OPC DA sample.

[sourcery-ai]

Reviewer's Guide

Introduce a new OPC DA sample by registering a real or mock server in the DI container based on OS, adding a demo menu entry with localization and documentation, and providing a Razor component showcasing connect, read, and subscription workflows

Class diagram for OpcDa sample component and server registration

classDiagram
    class OpcDa {
        - IOpcDaServer OpcDaServer
        - string _serverName
        - string Tag1
        - string Tag2
        - string Tag3
        - string Tag4
        - string _tagValue1
        - string _tagValue2
        - string _tagValue3
        - string _tagValue4
        - IOpcSubscription _subscription
        - bool _subscribed
        + OnConnect()
        + OnDisConnect()
        + OnRead()
        + OnCreateSubscription()
        + OnCancelSubscription()
        + UpdateValues(List<OpcReadItem>)
    }
    class IOpcDaServer {
        + Connect(serverName)
        + Disconnect()
        + Read(tags)
        + CreateSubscription(name, interval, active)
        + CancelSubscription(subscription)
        + IsConnected
    }
    class IOpcSubscription {
        + AddItems(tags)
        + DataChanged
    }
    class OpcReadItem {
        + Value
    }
    OpcDa --> IOpcDaServer
    OpcDa --> IOpcSubscription
    IOpcSubscription --> OpcReadItem

Loading

File-Level Changes

Change	Details	Files
Conditional OPC DA server registration via DI	Add using for OPC DA namespace Register real server on Windows or mock server otherwise	ServiceCollectionExtensions.cs
Menu, localization, and documentation entries for OPC DA sample	Insert new demo menu item Add localized strings in en-US and zh-CN JSONs Add sample entry to docs.json	MenusLocalizerExtensions.cs en-US.json zh-CN.json docs.json
Sample component for OPC DA operations with UI	Create Razor markup for connect/read/subscribe demo Implement component logic (connect, read, subscription handlers) Update project file to include new sample files	OpcDa.razor OpcDa.razor.cs BootstrapBlazor.Server.csproj

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#6562	Add sample code for MockOpcDaServer to the documentation or sample components.	✅

Possibly linked issues

• doc(OpcDa): add MockOpcDaServer sample code #6562: The PR adds the MockOpcDaServer sample code and UI as requested by the issue.

---

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[sourcery-ai]

Hey @ArgoZhang - I've reviewed your changes and they look great!

Prompt for AI Agents

Please address the comments from this code review:
## Individual Comments

### Comment 1
<location> `src/BootstrapBlazor.Server/Components/Samples/OpcDa.razor.cs:55` </location>
<code_context>
+        var values = OpcDaServer.Read(Tag1, Tag2);
+        _tagValue1 = values.ElementAt(0).Value?.ToString();
+
+        var v = (int)values.ElementAt(1).Value! / 100d;
+        _tagValue2 = v.ToString(CultureInfo.InvariantCulture);
+    }
</code_context>

<issue_to_address>
Potential InvalidCastException if Value is not int.

Casting values.ElementAt(1).Value to int without checking its type can cause a runtime exception if the value is not an int. Use a type check or safe conversion to prevent this.
</issue_to_address>

---

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[sourcery-ai]

issue (bug_risk): Potential InvalidCastException if Value is not int.

Casting values.ElementAt(1).Value to int without checking its type can cause a runtime exception if the value is not an int. Use a type check or safe conversion to prevent this.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (22e67cf) to head (b822d00).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #6563   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          719       719           
  Lines        31560     31560           
  Branches      4450      4450           
=========================================
  Hits         31560     31560           

Flag	Coverage Δ
BB	100.00% <ø> (?)

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