docs: add coverage reference files and flag architectural drift

These files catalog test coverage for Rust modules across architecture, implementation, and theory sections. They track recent structural changes, flag areas prone to documentation drift, and mandate verification of key parameters and routing logic to maintain alignment with the active codebase.
2026-05-23 13:19:31 +02:00
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+<!-- coverage sidecar — ne pas ajouter au nav mkdocs -->
+# Coverage: implementation/kmer.md
+
+## Code couvert
+
+- `obikseq/src/kmer.rs` — layout mémoire (repr(transparent) u64), encodage/décodage, revcomp, forme canonique
+- `obikseq/src/params.rs` — k global (set_k / k())
+
+## Notes
+
+Document d'implémentation stable. L'algorithme de revcomp bit-à-bit est décrit —
+vérifier qu'il correspond à `revcomp_raw` dans `obiskio/src/unitig_index.rs` (copie locale)
+et à l'implémentation dans `obikseq/src/kmer.rs`.