## Summary
- Add `mcp.Required()` to `keyword` in `search_repos` and `search_users` tool schemas
- Add `mcp.Required()` to `org` and `query` in `search_org_teams` tool schema
- Add test verifying required fields are set on all search tool schemas
- Fixes MCP clients failing with `keyword is required` because the schema didn't declare the field as required
Closes#115
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*This PR was authored by Claude.*
Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/135
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: silverwind <silverwind@noreply.gitea.com>
Co-committed-by: silverwind <silverwind@noreply.gitea.com>
