Call this first for any cross-feature question about a project (what is blocked, what shipped, status overview). Returns the raw markdown of specs/INDEX.md for the chosen repository. specs/INDEX.md is a derived rollup, not authoritative on its own — for detail on a specific feature, follow up with get_feature.

Call this for any feature-specific question. Returns the trio of markdown files (product.md, tech.md, test-plan.md) for one feature folder under specs/features//. Each file body is preceded by a "file: …, ref: …" header so you can cite the source. If any file is missing it is reported as missing rather than failing the whole call.