Route user to new project after creating it

What

Automatically route users to the newly created project after they create it, instead of keeping them on the current project.

Why

Currently, when a user creates a new project, they remain on the current project and have to manually navigate to the new project they just created. This creates unnecessary friction and is poor UX. Users expect to be taken to the new project immediately after creation so they can start working on it.

Acceptance Criteria

• When a user successfully creates a new project, the system automatically navigates them to the new project
• The project navigation/selector updates to show the newly created project as the active project
• All page content refreshes to display data for the new project (documents, BOQ, reports, etc.)
• The URL updates to reflect the new project (e.g., /projects/new-project-id)
• If project creation fails, the user remains on the current project
• User sees a success notification confirming the project was created
• Navigation history is preserved (user can use back button to return to previous project)