Prepare for public release on Gitea: simurgarray package names, community files, Gitea templates, pseudonymised P6 probe names

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## Unreleased
 
+**Packaging.** The distributions are now `simurgarray` and `simurgarray-core` (the name `simurg` is taken on
+PyPI); the `simurg` command and the `simurg` / `simurg_core` import names are unchanged. The conda recipe no longer pins
+the kernel package to the Python package's version (it required `simurg-core == 2.0.0` while the kernels are 1.1.0).
+Project URLs in the package metadata.
+
+**Community.** `CONTRIBUTING.md`, `SECURITY.md`, `CODE_OF_CONDUCT.md`, `CITATION.cff`, Gitea issue and pull request
+templates; CI moved to `.gitea/workflows/`. Probe names in the P6 oracle examples are replaced by stable pseudonyms.
+
 **Repository tidy-up.** Removed the Phase-0 research notes (`docs/research/`), the P9 benchmark scripts (`bench/`,
 `scripts/cloud/tasks/p9*.sh`) and a vendor probe-name list that should never have been committed (also purged from
 the git history).