[nova-loop]

Description

-w can now be repeated, so you can layer a general list and a target-specific one without concatenating them by hand:

subenum -w general.txt -w target.txt example.com

• -w is a flag.Value slice (wordlistPaths in main_wordlist.go). readWordlist reads each file in order and concatenates the lines before wordlist.Prepare, so an entry that appears in more than one list is scanned once and counted in duplicates, the same way as within one file.
• - (stdin) stays valid as one of the entries. Two - entries are rejected ("standard input can only be read once"), and so is -w - together with -dL -, as before.
• Config file / SUBENUM_W: these still take a single path. Each is a default, so the next source replaces it rather than adding to it: env replaces config, and the first -w on the command line replaces both. This keeps the existing flag > env > config precedence. Otherwise SUBENUM_W=a.txt subenum -w b.txt would silently scan both lists. This works through a small markDefault() hook that defaultsLoader.apply calls after setting a value.
• Resume: inputDigests fingerprints every -w file, and runs that read stdin through any -w - still don't save resume state.
• Verbose Wordlist: and the "no valid entries" error list all the paths.
• Docs: README flag table, the regenerated docs/_includes/flags.md (-w <file>, usage text), a one-line note in docs/ARCHITECTURE.md, and a CHANGELOG entry under Unreleased / Added. Shell completions and the man page are generated from the FlagSet, so they pick up the new usage text, and -w was already in fileFlags.

Related Issue

Closes #199

Type of Change

• New feature (non-breaking change which adds functionality)

A single -w behaves exactly as before. In -h the flag now shows as -w file instead of -w string.

Checklist

• I have read the CONTRIBUTING document
• My code follows the code style of this project
• I have added/updated appropriate comments to the code
• I have added tests that prove my fix is effective or that my feature works (main_wordlist_test.go): -w a -w b end to end with an overlapping entry scanned once, a file plus - from stdin, rejected inputs (two -, -w - with -dL -, one missing file), config/env/flag replacement, and flag parsing across the domain argument
• New and existing unit tests pass locally with my changes (go test ./... -shuffle=on, go vet ./..., gofmt)
• I have updated the documentation accordingly (README, flags include, ARCHITECTURE, CHANGELOG)

I didn't run make lint because golangci-lint isn't installed in my environment, so CI's lint job covers that.

Ethical Considerations

• This change maintains or improves the security controls in the tool
• This change follows the educational/legitimate security testing focus of the project
• I have considered potential misuse cases and taken appropriate steps to prevent them (input-handling change only; no new network behaviour)

Additional Information

The config file still accepts only a string for w. I didn't add w to listFlags, because those values are joined with commas and a path can contain a comma. If you'd like config-file lists of wordlists, that could be a follow-up with its own separator rule.

AI assistance: This change was prepared with AI assistance. An AI coding assistant wrote the code, tests and doc updates from the issue. Before opening the PR I reviewed the diff and ran the checks listed above.

[TMHSDigital]

Thanks, this is a clean change, and the config/env replace-not-extend handling plus the stdin edge cases are well thought through.

main moved underneath this PR (#196 landed and also added a CHANGELOG line), so I applied your change as a squash on main with you as the commit author, after resolving that one CHANGELOG conflict: f2cde07. The full suite (go test -race -shuffle=on ./...), go vet and golangci-lint (0 issues) pass on the result. Closing this PR since its content is now on main, and #199 is closed by the commit.