## Description
Add additional filter parameters for existing PostgreSQL tools:
1. `list_views`:
- Add a new optional `"schema_name"` filter parameter to return results
based on a specific schema name pattern.
- Add an additional column `"definition"` to return the view definition.
2. `list_schemas`:
- Add a new optional `"owner"` filter parameter to return results based
on a specific owner name pattern.
- Add a new optional `"limit"` parameter to return a specific number of
rows.
3. `list_indexes`:
- Add a new optional `"only_unused"` filter parameter to return only
unused indexes.
> Should include a concise description of the changes (bug or feature),
it's
> impact, along with a summary of the solution
list_views
<img width="1531" height="763" alt="Screenshot 2025-11-25 at 1 36 39 PM"
src="https://github.com/user-attachments/assets/bd6805b3-43d2-46c7-adc8-62d3a4521d36"
/>
list_schemas
<img width="1519" height="755" alt="Screenshot 2025-11-25 at 1 35 54 PM"
src="https://github.com/user-attachments/assets/62d3e987-b64e-442b-ba1a-84def1df7a58"
/>
list_indexes
<img width="1523" height="774" alt="Screenshot 2025-11-25 at 1 35 32 PM"
src="https://github.com/user-attachments/assets/c6f73b3f-f8a2-4b76-9218-64d7011a2241"
/>
## PR Checklist
> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:
- [x] Make sure you reviewed
[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a
[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
before writing your code! That way we can discuss the change, evaluate
designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change
🛠️ Fixes #<1738>
Co-authored-by: Averi Kitsch <akitsch@google.com>
