⬆️ 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/obidefault/taxonomy.md

@@ -0,0 +1,21 @@
+# `obidefault` Package: Configuration State Management
+
+This Go package provides a centralized, thread-safe(ish) configuration layer for taxonomy-related settings in the OBIDMS (Open Biological and Biomedical Data Management System) framework. It exposes simple getters, setters, and pointer accessors for four core boolean/string flags that control how taxonomic identifiers (taxids) are handled during data processing.
+
+## Core Configuration Flags
+
+- `__taxonomy__`: Stores the currently selected taxonomy (e.g., `"NCBI"`, `"UNIPROT"`).  
+- `__alternative_name__`: Enables/disables use of alternative taxonomic names (e.g., synonyms).  
+- `__fail_on_taxonomy__`: If true, processing halts on taxonomy mismatches/errors.  
+- `__update_taxid__`: If true, taxids are auto-updated to current NCBI/DB versions.  
+- `__raw_taxid__`: If true, raw (unprocessed) taxids are preserved instead of normalized.
+
+## Public API
+
+- **Getters**: `UseRawTaxids()`, `SelectedTaxonomy()`, `HasSelectedTaxonomy()`, etc., return current values.  
+- **Pointer Accessors**: e.g., `SelectedTaxonomyPtr()` returns a pointer for direct mutation (advanced use).  
+- **Setters**: `SetSelectedTaxonomy()`, `SetAlternativeNamesSelected()`, etc., update state.
+
+## Use Case
+
+Typically used at application startup to configure global behavior (e.g., `SetSelectedTaxonomy("NCBI")`, `SetUpdateTaxid(true)`), then referenced by downstream modules during data import, validation, or mapping. Minimalist and explicit—no external dependencies.