- Add ESLint 9 configuration (eslint.config.mjs) with TypeScript and React hooks plugins
- Add npm run lint:eslint command for code quality checks
- Expand npm run lint to check all three TypeScript configs (renderer, main, cli)
- Update tsconfig.cli.json to include src/prompts and src/types directories
Fix 29 ESLint errors:
- Remove unused updateCliActivity import in batch-processor.ts
- Convert {false && <jsx>} patterns to comments in AutoRun components
- Wrap case block with const declarations in braces (AgentSelectionScreen)
- Fix unused expression pattern in PreparingPlanScreen
- Fix conditional hook calls in FilePreview, OfflineQueueBanner, RecentCommandChips, TerminalOutput
- Add windows-diagnostics.json to PackageContents interface
Update CLAUDE.md and CONTRIBUTING.md with new linting commands and documentation.
Claude ID: 029e8abe-5734-4967-9fb4-c85078c1973d
Maestro ID: 87ffa06e-0ecd-4eb8-b327-dad1ec24f7a9
