**Related issue:** Resolves #32999 - Enhanced internal code quality tooling by implementing a custom linting build configuration. - Updated continuous integration workflow to utilize the new custom build process for improved code analysis and consistency checks. ### Confirmed that running local custom `golangci-lint` build with `nilaway` plugin catches lots of issues when run on `fleet/`: <img width="1555" height="939" alt="Screenshot 2026-01-29 at 2 47 50 PM" src="https://github.com/user-attachments/assets/c6a18400-fdf0-4104-97d8-e117efc28ed6" /> <img width="301" height="109" alt="Screenshot 2026-01-29 at 2 48 36 PM" src="https://github.com/user-attachments/assets/b459ee7b-b391-457a-9191-17d56a80c783" /> ### Confirmed that new incremental CI step using custom `golangci-lint` build with `nilaway` plugin _does not_ check any `.go` files when none have been modified, and so passes successfully (incremental check works as expected): <img width="337" height="197" alt="Screenshot 2026-01-29 at 2 45 24 PM" src="https://github.com/user-attachments/assets/c7ae585e-2e10-4ebf-a3a3-96c26063f1e4" /> ### Confirmed that new incremental CI step using custom `golangci-lint` build with `nilaway` plugin _does_ check modified lines of `.go` files, and so successfully flags a potentially unsafe dereference and fails the job (incremental check works as expected): <img width="825" height="491" alt="Screenshot 2026-01-29 at 5 50 01 PM" src="https://github.com/user-attachments/assets/82bc5616-6fb9-4357-b8bc-c7eebc42c2d8" /> ### Honorable mention: `nilaway` agrees that `listHostSoftware` is a wild beast: <img width="1277" height="190" alt="Screenshot 2026-01-29 at 5 52 32 PM" src="https://github.com/user-attachments/assets/dfade2a8-fbcc-4bae-98f9-6bf1089620d2" /> - [x] QA'd all new/changed functionality manually <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Fleet dev cycle reliability improvements** <sub>✏️ Tip: You can customize this high-level summary in your review settings.</sub> <!-- end of auto-generated comment: release notes by coderabbit.ai --> --------- Co-authored-by: Victor Lyuboslavsky <2685025+getvictor@users.noreply.github.com>