⬆️ 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/paired_reads.md

@@ -0,0 +1,19 @@
+# BioSequence Pairing Functionality
+
+This package provides semantic tools for managing biological sequence pairings—typically used in genomics (e.g., paired-end reads). Key features:
+
+- **Single-sequence pairing**:  
+  - `IsPaired()` checks if a sequence is currently paired.  
+  - `PairedWith()` returns the linked partner, or `nil`.  
+  - `PairTo(p)` establishes a bidirectional link between two sequences.  
+  - `UnPair()` safely severs the pairing on both ends.
+
+- **Batch (slice) handling**:  
+  - `IsPaired()` and `UnPair()` operate uniformly across all sequences in a slice.  
+  - `PairedWith()` returns the corresponding paired slice (element-wise).  
+  - `PairTo(p)` enforces length compatibility and pairs sequences index-by-index.  
+
+- **Error handling**:  
+  - Mismatched slice lengths during `PairTo` trigger a fatal log (via Logrus), preventing inconsistent pairings.
+
+Semantically, the API supports both *atomic* and *bulk* pairing operations while preserving consistency through bidirectional references—ideal for processing paired-end sequencing data.