BB-876: feat: Add script option for aliases and name section

[atharvsp02]

Problem

Currently there is no script option for aliases and entity names. Languages like Serbian use multiple scripts like Latin and Cyrillic and right now there is no way to tell which script a title is written in.

Solution

Added a Script dropdown to the alias editor and the main name section, following the same pattern as the existing Language field.

Database:

• Added musicbrainz.script table to the schema
• Migration adds script_id column to bookbrainz.alias

Server:

• Added loadScripts middleware (same as loadLanguages)
• Updated all entity routes to load scripts
• Updated constructAliases to include `scriptId

Frontend:

• New ScriptField component with grouped options (Frequently Used and Other) and recently used
• Added Script dropdown to alias editor
• Added Script dropdown to name section
• Redux actions and reducers for both alias editor and name section

This PR relies on the Script model and alias relationship from metabrainz/bookbrainz-data-js #338.

• I have run the code and manually tested the changes

Areas of impact

• musicbrainz.sql, up.sql, down.sql - Database schema and migration
• middleware.ts, entityRouteUtils.tsx - Server data loading and prop passing
• author.ts, edition.ts, edition-group.ts, publisher.ts, series.ts, work.ts, merge.ts,unifiedform.ts - Routing middleware updates
• entity.tsx - Server data parsing
• script-field.tsx - New UI component
• alias-editor.js, alias-modal-body.tsx, alias-row.js - Alias UI updates
• actions.ts, reducer.js - State management for alias and name section
• name-section.js - Name section UI updates

Screenshots

Script dropdown in Name Section

Script dropdown in Alias Editor

AI usage

• I did not use any AI
• I have used AI in this PR (add more details below)

If you did use AI:

• I used AI tools for communication
• I used AI tools for coding
• I understand all the changes made in this PR

Action

1. Run migration sql/migrations/2026-03-30/up.sql
2. Merge bookbrainz-data-js PR #338

[atharvsp02]

Hey @monkey !
Let me know if you have any suggestions or changes.
The CI is failing because bookbrainz-data does not have the Script model yet. It will pass once the bookbrainz-data-js #338 is merged