⬆️ 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/subseq.md

@@ -0,0 +1,13 @@
+# `obiseq.Subsequence` Functionality Overview
+
+The `Subsequence()` method extracts a contiguous segment from a biological sequence (`BioSequence`), supporting both linear and circular topologies.
+
+- **Input validation**: Checks ensure `from < to` (unless circular), positions are non-negative, and bounds respect sequence length.
+- **Circular handling**: Positions exceeding the sequence length wrap around using modular arithmetic; debug logs record corrections.
+- **Linear extraction**: When `from < to`, it slices the underlying nucleotide/peptide sequence and, if present, its quality scores.
+- **Circular extraction**: When `from > to`, it concatenates two linear segments: from `from` → end, and start → `to`.
+- **Metadata preservation**: Quality scores (if available) and annotations are copied to the new subsequence.
+- **ID formatting**: The resulting sequence ID is suffixed with `[from..to]` (1-based indexing).
+- **Mutation tracking**: A private `_subseqMutation()` adjusts stored pairing mismatch positions by subtracting the extraction shift, ensuring coordinate consistency post-extraction.
+
+This enables robust subsequence generation for genomic analysis workflows involving circular genomes (e.g., plasmids) or fragmented reads.