- Wire up --config/-f flag to actually load custom config files
- Move config loading to PersistentPreRunE in root.go
- Simplify main.go to just call cmd.Execute()
- Move Playwright init to web command's PreRunE/PostRunE
- Remove unused functions from cmd/web.go (~90 lines of dead code)
- Remove writeSingleFile, writeMultipleFiles, generateDefaultFilename
- Remove scrapeURL, extractAndConvertContent, testExtractAndConvertContent
- Remove unused mock function from web_test.go
- Add OutputType validation to Config.Validate()
- Only allow "single", "separate", or empty string
- Add test cases for valid and invalid output types
