feat(frontier): add upper bounds to pagination page_size and rql limit fields

[AmanGIT07]

Adds a maximum bound of 5000, using buf.validate lte rules, to:

• page_size in ListUsersRequest, ListProjectsByCurrentUserRequest, ListOrganizationsRequest (frontier.proto)
• page_size in ListAllUsersRequest, ListAllOrganizationsRequest, ListAllInvoicesRequest (admin.proto)
• limit in the shared RQLRequest (models.proto)

Zero still means unset and keeps server-side defaults. Values from 1 to 5000 are accepted as before.

🤖 Generated with Claude Code

[github-actions]

The latest Buf updates on your PR. Results from workflow Validate / validate (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	⏩ skipped	✅ passed	✅ passed	Jul 23, 2026, 12:06 PM

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 7fe0efbf-e428-4c21-babd-92c147094017

📥 Commits

Reviewing files that changed from the base of the PR and between f0b06e6 and b2d1e93.

📒 Files selected for processing (3)

• raystack/frontier/v1beta1/admin.proto
• raystack/frontier/v1beta1/frontier.proto
• raystack/frontier/v1beta1/models.proto

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📝 Walkthrough

Walkthrough

The protobuf definitions now cap pagination-related values at 5000. Six list request page_size fields retain their minimum validation, with administrative requests preserving zero-value handling. RQLRequest.limit now also enforces a maximum of 5000.

Suggested reviewers: rohilsurana, whoabhisheksah

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: adding upper bounds to pagination and RQL limit fields.
Description check	✅ Passed	The description matches the changeset and correctly lists the updated validation rules and fields.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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