⬆️ 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/obicorazick/worker.md

@@ -0,0 +1,28 @@
+# Aho-Corasick-Based Sequence Analysis in `obicorazick`
+
+This Go package provides efficient pattern-matching utilities for biological sequence data, leveraging the Aho-Corasick algorithm.
+
+## Core Components
+
+- **`AhoCorazickWorker(slot string, patterns []string) obiseq.SeqWorker`**  
+  Builds *multiple* Aho-Corasick matchers in parallel (batched to manage memory), then returns a `SeqWorker` function.  
+  - Scans each sequence *forward* and its reverse complement.
+  - Counts total matches (`slot`), forward-only (`_Fwd`) and reverse-complement-specific (`_Rev`) matches.
+  - Attaches match counts as sequence attributes.
+
+- **`AhoCorazickPredicate(minMatches int, patterns []string) obiseq.SequencePredicate`**  
+  Compiles a *single* matcher and returns a predicate function.  
+  - Returns `true` if the number of matches ≥ `minMatches`.
+  - Useful for filtering sequences (e.g., taxonomic assignment or contamination detection).
+
+## Technical Highlights
+
+- **Batched compilation**: Large pattern sets are split into chunks (default `10⁷` patterns/batch) to avoid memory overload.
+- **Parallelization**: Matcher construction uses goroutines, scaled by `obidefault.ParallelWorkers()`.
+- **Progress tracking**: Optional CLI progress bar via `progressbar/v3`, enabled globally.
+- **Logging & debugging**: Uses Logrus for info/debug messages; logs match counts per sequence.
+
+## Use Cases
+
+- Rapid screening of sequences against large reference databases (e.g., primers, barcodes, contaminants).
+- Filtering or annotating sequences based on pattern presence/abundance.