v1.0.0: user guide, examples, changelog

docs/user_guide.md (install, inputs, complete run, commands, presets, QC, outputs,
accuracy, limitations, troubleshooting), examples/gsa_demo.sh (end-to-end run on the
public GSA demo, verified on the Pi), examples/sample_sheet.csv, CHANGELOG.md; version 1.0.0.

src/simurg/__init__.py

@@ -4,5 +4,5 @@ Specification: SIMURGARRAY_MASTER_PLAN.md (algorithms, roadmap) and
 SIMURGARRAY_FUNCTIONAL_SPEC.md (externally visible behaviour, item IDs such as CLI-021).
 """
 
-__version__ = "0.1.0.dev0"
+__version__ = "1.0.0"
 PRODUCT_NAME = "SimurgArray"