enhancement: support centralized module-aware navigation rendering in User Interface

[glitched-matrix44]

The current User Interface package renders module tabs and sidebar navigation using installed module lists and inline rendering logic. This tightly couples the UI to module registration and makes it difficult to consume the configurable navigation structure introduced in Foundation.

This enhancement updates the UI layer to render navigation from Foundation-provided navigation data while centralizing client-side rendering, active state management, and navigation behavior into a reusable rendering pipeline.

Scope:
-Render module tabs from navigation records instead of installed modules.
-Consume Foundation navigation data for sidebar generation.
-Filter navigation items based on authentication and module access.
-Centralize sidebar rendering and active state handling.
-Replace inline sidebar rendering with a dedicated navigation renderer.
-Update shared layout components to consume the centralized navigation flow.
-Maintain compatibility with the existing navigation experience.

Acceptance Criteria:
-Module tabs are rendered from navigation records.
-Only authorized navigation items are displayed.
-Sidebar rendering is handled through a centralized navigation renderer.
-Active module and sidebar states are updated correctly.
-Header, minibar, mobile navigation, and sidebar use the shared rendering flow.
-Legacy inline sidebar rendering logic is removed.
-Existing navigation functionality continues to work correctly.

[glitched-matrix44]

Implemented the first pass of the Navigation Editor lazy-loading refactor.

What changed:
Reworked the left-side navigation selector from the old full card-based load to a module dropdown flow.
Added a temporary GET /navigation-editor/children/{parent_uid} endpoint for loading immediate children on demand.
Kept the editor panel side-by-side and preserved the existing visual layout.
Removed the default auto-selection on initial page load so the editor starts empty unless a node is explicitly selected.
Fixed the edit flow so clicking the pencil button loads the selected navigation row into the JSON editor instead of redirecting back to user-interface.

Current status:
The module selection/edit flow is wired up.
The sidebar dropdown population is still not resolving correctly for all modules, likely due to a mismatch between the module dropdown value and the relationship data in module_has_navigations / navigation payloads.

Relevant Files:
src/Http/Controllers/NavigationEditorController.php
resources/views/navigation-editor/index.blade.php
routes/web.php