⬆️ 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/obitax/issuubcladeof.md

@@ -0,0 +1,19 @@
+# Semantic Description of `obitax` Taxonomic Functions
+
+The `obitax` package provides two core methods for hierarchical taxon relationship analysis:
+
+- **`IsSubCladeOf(parent *Taxon) bool`**  
+  Determines whether the current taxon is a **descendant** (i.e., subclade) of a given parent taxon.  
+  - Ensures both taxa belong to the *same taxonomy*—fails with a fatal log if not.  
+  - Traverses upward via `taxon.IPath()` (iterative ancestor path) to check if any node matches the parent’s ID.  
+  - Returns `true` iff a match is found, indicating lineage descent.
+
+- **`IsBelongingSubclades(clades *TaxonSet) bool`**  
+  Checks whether the current taxon—or any of its **ancestors**—belongs to a specified set of clades (`TaxonSet`).  
+  - Starts by testing direct membership via `clades.Contains(taxon.Node.id)`.  
+  - Walks upward through the hierarchy (`taxon = taxon.Parent()`) until either:  
+    - A match is found, or  
+    - The root is reached.  
+  - Final check at the root ensures completeness (e.g., if only root belongs).  
+
+Both functions support **robust phylogenetic queries**, enabling classification validation, filtering by clade membership, and hierarchical consistency checks in taxonomic trees.