Proposed Changes

This PR addresses two practical profile usability gaps from #5567:

1. Ignore profile metadata keys

   • Allows id, name, purpose, and description in template profile YAML without failing config merge.
   • These keys are stripped before passing data to goflags merge.

2. Support inline list: values in profile YAML

   • If list contains multiline content, nuclei now materializes it to a temp file and uses it as TargetsFilePath.
   • This enables profile-local target lists without external host files.

Proof

go test ./cmd/nuclei -run 'TestSanitizeTemplateProfileForMerge|TestMaterializeInlineListTargets' -count=1
ok  github.com/projectdiscovery/nuclei/v3/cmd/nuclei  0.737s

Checklist

• PR created against dev
• Tests added for the new behavior
• Test command included
• Docs update (can add after maintainer preference)

/claim #5567

Summary by CodeRabbit

New Features

• Inline target lists can now be passed directly in commands as newline-separated values without requiring separate files

Bug Fixes

• Configuration merging now properly excludes non-essential profile metadata to prevent merge conflicts

Tests

• Added test coverage for profile sanitization and inline target list processing