⬆️ 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/obiformats/csv_writer.md

@@ -0,0 +1,22 @@
+# CSVSequenceRecord Function Description
+
+The `CSVSequenceRecord` function converts a biological sequence object (`*obiseq.BioSequence`) into a slice of strings suitable for CSV output. It dynamically constructs the record based on user-defined options (`opt Options`), enabling flexible column selection.
+
+## Core Features
+
+- **Sequence ID**: Includes the sequence identifier if `opt.CSVId()` is enabled.
+- **Abundance Count**: Appends the sequence count (e.g., read depth) if `opt.CSVCount()` is true.
+- **Taxonomic Information**: Adds both NCBI taxid and scientific name (retrieved from attributes or fallback via `opt.CSVNAValue()`).
+- **Definition Line**: Includes the sequence definition/description if requested via `opt.CSVDefinition()`.
+- **Custom Attributes**: Iterates over keys from `opt.CSVKeys()` and appends corresponding attribute values (or NA if missing).
+- **Nucleotide Sequence**: Appends the raw sequence string when `opt.CSVSequence()` is enabled.
+- **Quality Scores**: Converts Phred-quality scores to ASCII characters (using a configurable shift) if available; otherwise inserts NA.
+
+## Design Highlights
+
+- Uses `obiutils.InterfaceToString()` for safe type conversion of arbitrary attribute values.
+- Handles missing data consistently via `opt.CSVNAValue()`.
+- Supports both standard and user-defined metadata fields.
+- Adapts quality encoding to common formats (e.g., Sanger/Illumina) via `obidefault.WriteQualitiesShift()`.
+
+This function enables interoperable, configurable export of sequence data to tabular formats.