ADD - module source code editor with Monaco integration

[Kureii]

Summary

Full-stack feature for reading and editing imported Python module source code through the management UI. Includes a reusable Monaco Editor component for Python with syntax highlighting, hot-reload support, and client-side basic validation.

New Reusable Component

PythonCodeEditor.razor (Shared/Components/Forms/) — wraps Monaco Editor with Blazor JS interop. Parameters: Value, ValueChanged, Height. Usable anywhere via <PythonCodeEditor @bind-Value="@code" Height="460px" />.

Architecture (full stack)

Python Core (GET/PUT /system/read|update/{short_name})
  |
CoreConnector -> CoreService -> CoreAppService -> CoreController
  |                                                    |
ICoreConnector  ICoreService  ICoreAppService   GET/PUT /api/core/module/{name}
                                                        |
                                            CoreApiService (client HTTP)
                                                        |
                                        ModuleEditModal.razor
                                            (Monaco Editor UI)

Changed Files

New files (3)

• Shared/Components/Forms/PythonCodeEditor.razor — reusable Monaco Editor component
• Pages/.../Core/Modules/Edit/ModuleEditModal.razor — edit modal with Monaco editor
• Shared/Data/DTOs/Management/Core/Modules/CoreModuleContentDto.cs — shared DTO

Modified files (15)

Layer	File	Change
Client	index.html	Monaco Editor CDN (loader.js + require.config)
Client	app.js	monacoCreate/getValue/setValue/dispose JS functions
Client	_Imports.razor	Added @using for new Edit namespace
Client	CoreModuleListItemHeader.razor	Added Edit (pen icon) button
Client	CoreApiService.cs / ICoreApiService.cs	GetTaskCoreModuleContent / UpdateTaskCoreModule HTTP methods
Server	CoreController.cs	GET/PUT /api/core/module/{name} endpoints (Admin-only)
Application	CoreAppService.cs / ICoreAppService.cs	ReadModule, UpdateModule pass-throughs
Domain	CoreService.cs / ICoreService.cs	Pass-through methods
Domain	CoreConnector.cs / ICoreConnector.cs	HTTP calls to Python Core
Infrastructure	DefaultResourcesConfiguration.cs	2 new EN validation resources
Shared	UIValidationConstants.cs	ModuleContentNotEmpty, ModuleContentPythonSyntax

Features

• Python syntax highlighting via Monaco Editor (vs-dark theme)
• Edit modal opens from module list item header (pen icon)
• Loads module source code on modal open
• Save with client-side validation (non-empty, contains class/def)
• Module hot-reloads in Core after save (no restart needed)

Dependencies

• Monaco Editor v0.52.0 (CDN, MIT license)
• Requires corresponding EASE Core PR for the Python read/update endpoints