docs(admin): Improve database chapter titles / navigation

[joshtrichards]

☑️ Resolves

Summary:

• Rename database configuration chapters with clearer, admin-friendly titles
• Reorder the database documentation according to the administrator workflow
• Clarify the distinction between read replicas and splitting tables or apps across databases
• Remove the duplicate generic “Database configuration” chapter title

Details:

The database configuration landing page now introduces the topics in a more natural order:

1. Set up a database server
2. Enable MySQL/MariaDB 4-byte support
3. Convert to a different database type
4. Convert to 64-bit database identifiers
5. Using database read replicas
6. Splitting tables or apps across databases

The revised titles describe the administrator’s task or the result of the configuration rather than relying on implementation-specific terminology where possible (Note: I intend to do a follow-up PR for the 4-byte chapter which may further refine the title to make it more "friendly").

🖼️ Screenshots

✅ Checklist

• I have built the documentation locally and reviewed the output
• Screenshots are included for visual changes
• I have not moved or renamed pages (or added a redirect if I did)
• I have run codespell or similar and addressed any spelling issues

[github-actions]

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📄 7 changed documentation pages

• admin_manual/configuration_database/bigint_identifiers.rst
• admin_manual/configuration_database/db_conversion.rst
• admin_manual/configuration_database/index.rst
• admin_manual/configuration_database/linux_database_configuration.rst
• admin_manual/configuration_database/mysql_4byte_support.rst
• admin_manual/configuration_database/replication.rst
• admin_manual/configuration_database/splitting.rst

Last updated: Mon, 24 Aug 2026 02:57:15 GMT