What problem does it solve? Keeping a multi-version Fern documentation site consistent is error-prone: pages must be added to the right MDX tree, navigation YAML must stay in sync, redirects must preserve old URLs, and frozen GA snapshots live on a separate archive branch. This Skill encodes the full operational playbook for the NeMo AutoModel docs site so edits, moves, and releases follow the correct procedure every time. ## Core Features & Use Cases - Page lifecycle management: Add, update, move, or remove MDX pages under docs/ with correct frontmatter, sidebar entries in nightly.yml, and slug handling. - Redirect and versioning operations: Configure redirects: rules in docs/fern/docs.yml (including :path* edge cases) and cut new version trains by snapshotting nightly content onto the docs-archive branch. - Validation and preview workflows: Run make docs-check (fern check), local previews, shared preview URLs, and production publishes, with a debugging table for common failures. - Use Case: When asked to add a fine-tuning guide for a new model, the Skill creates the MDX file with proper frontmatter, registers it in the navigation YAML under the right section, and validates the change with fern check before commit. ## Quick Start Ask the assistant to add a new documentation page to the NeMo AutoModel Fern docs site, for example a fine-tuning guide under the Recipes section, and have it create the MDX file, update the navigation, and run validation.