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: architecture/sequences/invariant.md
+
+## Code couvert
+
+- `obikseq/src/sequence.rs` — invariants de représentation des séquences (ACGT, longueur max)
+- `obikseq/src/unitig.rs` — type Unitig, contrainte MAX_KMERS_PER_CHUNK (255 kmers par chunk)
+
+## Notes
+
+Document court et stable. Vérifier que la limite de 256 nucléotides (ou 255 kmers) par chunk
+est toujours la même dans `obiskio::MAX_KMERS_PER_CHUNK`.