⬆️ 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/obiiter/pipe.md

@@ -0,0 +1,17 @@
+# Semantic Description of `obiiter` Package Features
+
+This Go package provides functional-style utilities for processing biological sequence data (e.g., FASTQ/FASTA), modeled via the `IBioSequence` interface.
+
+- **`Pipeable`**: A function type representing a unary transformation on an `IBioSequence`.  
+- **`Pipeline(start, parts...)`**: Composes a sequence of `Pipeable` operations into a single executable pipeline. It applies transformations sequentially: input → start → part₁ → … → output.
+
+- **`(IBioSequence).Pipe(start, parts...)`**: A convenience method enabling fluent chaining of transformations directly on a sequence object.
+
+- **`Teeable`**: A function type for operations that split input into two independent output streams (e.g., filtering + logging).
+
+- **`(IBioSequence).CopyTee()`**: A high-level tee operation that duplicates the input stream into two identical, concurrently readable `IBioSequence` instances.  
+  - Uses goroutines to ensure non-blocking parallel consumption.
+  - Ensures proper lifecycle management: closing the second stream when the first is closed.  
+  - Preserves paired-end status (`MarkAsPaired`) if applicable.
+
+Together, these features support modular, composable, and concurrent biosequence processing pipelines—ideal for scalable NGS data workflows.