⬆️ version bump to v4.5

- Update obioptions.Version from "Release 4.4.29" to "/v/ Release v5"
- Update version.txt from 4.29 → .30
(automated by Makefile)

autodoc/docmd/pkg/obiseq/compare.md

@@ -0,0 +1,20 @@
+# Semantic Description of `obiseq` Comparison Functions
+
+The `obiseq` package provides utility functions for comparing biological sequence records (`*BioSequence`) based on different fields. These comparators are designed to support sorting, deduplication, or grouping operations in bioinformatics workflows.
+
+- **`CompareSequence(a, b *BioSequence) int`**  
+  Compares the raw nucleotide or amino acid sequences (`a.sequence`) lexicographically using `bytes.Compare`. Returns:
+  - `<0` if `a < b`,  
+  - `0` if equal,  
+  - `>0` if `a > b`.
+
+- **`CompareQuality(a, b *BioSequence) int`**  
+  Compares the base quality scores (`a.qualities`) lexicographically (as byte strings), following same semantics as above. Useful for sorting reads by quality profiles.
+
+- **Commented-out `CompareAttributeBuilder(key string)`**  
+  A planned higher-order function to generate custom comparators based on sequence attributes (e.g., `RG`, `NM`). It would:
+  - Extract attribute values using `.GetAttribute(key)`.
+  - Handle missing attributes (treat absent as "less than" present).
+  - Eventually support typed comparisons for ordered types.
+
+These functions assume `BioSequence` implements a consistent internal structure with `.sequence []byte` and `.qualities []byte`. They enable flexible, field-based ordering in collections of sequencing records.