Toggle bibliography identifiers

Apply this skill only to biblatex projects. Natbib and .bst styles require style-specific changes; report that limitation instead of guessing.

Workflow

1. Use an explicit manuscript path when provided. Otherwise, identify the build entrypoint from the project configuration and TeX structure.
2. Locate the biblatex configuration that controls the target build. It may be in \usepackage[...]{biblatex} or \ExecuteBibliographyOptions{...}. If multiple build variants use different settings, ask which one to change.
3. Infer on or off from the request. Ask only when the direction is unspecified.
4. Update the existing configuration in place. Preserve unrelated biblatex options and do not add a duplicate package call.

For on, set:

doi=true, url=true, eprint=true, isbn=false

For off, set: