## Context
There's certain areas in the dashboard where we're calling
`useTablesQuery` without a schema filter, in which case the dashboard
then fires a query against the project's database to fetch _all_ tables
across _all_ schemas - this could easily be a heavy query if there's a
large number of relations in the project's database.
Am hence opting to either add a schema filter if appropriate, or
otherwise opt to use the infinite loading behaviour
## Changes involved
- Add schema filter to `useTablesQuery` in database triggers and
publications
- Use infinite loading for tables in Cmd K for "Run query on table" and
"Search database tables"
## To test
- [x] Verify that database triggers + publications still function as
expected
- [x] Verify that CMD K "Run query on table" and "Search database
tables" still function as expected (including search)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Implemented debounced infinite-scrolling table search in the command
menu and SQL editor command flow.
* Added a schema selector dropdown to publications management for easier
navigation.
* **Improvements**
* Removed the “Schema” column from the publications tables UI.
* Updated search guidance and table-picker status (counts/loading)
during infinite browsing.
* Trigger table listings now follow the selected schema context.
* Refined command menu list height and improved the database-tables
placeholder text.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
