Brummel
b638abf1e2
Two unrelated hygiene iters bundled because they shipped together in one autonomous-while-Boss-away batch: - iter rustdoc-sweep: cleared all 23 `cargo doc --workspace --no-deps` warnings (17 in ailang-check + 4 in ailang-core + 2 in ailang-surface). Two warning classes: pub-doc-comment links to pub(crate)/private items (15 hits — replaced with plain backtick-code-spans), and unresolved/ambiguous links (8 hits — fully-qualified, disambiguated to fn-form, or escaped). No behaviour change; tests 562 → 562. - iter drift-test-narrowing: design_schema_drift.rs now scans §"Data model" only via new helper data_model_section(), instead of full DESIGN.md. Closes the audit-form-a-precursor [high] "anchor-elsewhere-passes-silently" failure mode. All 38 anchors verified pre-edit to live in §"Data model" so the tightening doesn't regress to red. New pin data_model_section_is_bounded guards the extractor against silent regression. Tests 562 → 563.