⬆️ 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/obilua/obiseqslice.md

@@ -0,0 +1,31 @@
+# `obilua` Package: Lua Bindings for BioSequence Slicing
+
+This Go module provides **Lua scripting support** for biological sequence manipulation via the `obilua` package. It exposes a custom Lua type, `"BioSequenceSlice"`, wrapping Go’s `*obiseq.BioSequenceSlice` to enable high-level sequence operations in Lua.
+
+## Core Features
+
+- **Type Registration**: Registers `BioSequenceSlice` as a userdata type in Lua with metatable support.
+- **Constructor**: `new([capacity])` creates a new slice (optionally pre-sized).
+- **Indexing & Assignment**: `slice[i] = seq` or `seq = slice[i]`, with bounds checking.
+- **Dynamic Operations**:  
+  - `push(seq)`: Append a sequence.  
+  - `pop()`: Remove and return the last sequence.
+- **Length Query**: `len()` returns number of sequences in slice.
+
+## Output Formatting
+
+Provides multiple export methods to format all contained sequences:
+
+- `fasta([format])`: Returns FASTA string (supports `"json"` or `"obi"` headers).
+- `fastq([format])`: Returns FASTQ string (same format options as above).
+- `string([format])`: Smart formatter:  
+  - Uses FASTQ if *all* sequences have quality scores.  
+  - Falls back to FASTA otherwise.
+
+## Design Notes
+
+- All methods validate input types and indices.
+- Format selection is optional; defaults to `"obi"` header style unless specified as `"json"`.
+- Integrates with `obiseq.BioSequence` and formatting utilities from the OBItools4 ecosystem.
+
+This enables Lua users to process NGS data (e.g., FASTA/FASTQ) interactively within pipelines, leveraging Go’s performance and Lua’s expressiveness.