feat: add village overview and detail editing

[Zhey-on]

Brief summary of the change made

This PR adds a proper Village management flow so villages are no longer create-only.

What is included:

• A new Village Overview page at /villages to list existing villages.
• A new Village Detail page at /villages/:id to view and update village data.
• Route and sidebar integration for the new village pages.
• City API integration on the frontend for detail and update operations.

closes: #1364

Are there any other side effects of this change that we should be aware of?

• No backend endpoint changes were needed; this uses existing GET /api/cities/{id} and PUT /api/cities/{id} endpoints.
• The village detail page is restricted to users with settings permission (consistent with village creation).

Describe how you tested your changes?

Manual verification in local development:

1. Open /villages and confirm existing villages are listed.
2. Click any village row and verify navigation to /villages/:id.
3. Edit name/country/mini-grid as a settings user and save.
4. Confirm success notification and persisted values after reload.
5. Verify non-settings users can access view but cannot edit fields/save.

Pull Request checklist

Please confirm you have completed any of the necessary steps below.

• Meaningful Pull Request title and description
• Changes tested as described above
• Added appropriate documentation for the change.
• Created GitHub issues for any relevant followup/future enhancements if appropriate.