Never use the @typescript-eslint/no-unused-vars ESLint rule

Never use @typescript-eslint/no-unused-vars: do not add, enable, suppress, treat as a merge blocker, or clean up solely for this rule; it is outside this project’s quality policy. Distinguish diagnostics introduced by the current change from confirmed baseline warnings using history or baseline output. The seven known warnings in src/commands/publish.ts and src/utils/git.ts, including underscore-prefixed catch variables, are pre-existing non-blocking hygiene debt. Report lint as passing only as 0 errors with the unchanged seven warnings noted when relevant.