Add API endpoint guide panel to Home view

[Copilot]

Adds a "Get Started with API" panel to the Home page to help demo participants quickly discover and test available REST APIs.

Changes

• Created PortCaptaincyApiController: New API endpoint at /api/PortCaptaincyApi returning port captain data from DemoDataService
• Added API guide panel to Views/Home/Index.cshtml positioned between hero section and module cards, featuring:
  • Available endpoints with brief descriptions
  • Usage notes (HTTP methods, response format, authentication)
  • curl command examples
  • Link to Swagger documentation

Screenshot

The panel uses Bootstrap styling consistent with the existing UI and provides immediate value for demo participants exploring the API surface.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add API endpoint guide to Home/Dashboard view</issue_title>
<issue_description>Help demo participants quickly try APIs by adding a “Get Started with API” panel to the Home page.
Include sample URLs (e.g., /api/ShipAgenciesApi, /api/PortCaptaincyApi) and brief usage notes.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add API endpoint guide to Home/Dashboard view #5

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