ci: modern twine, classic auth via group vars, v0.1.6

After protecting the * tag pattern on the python/ group, the group-
scoped Protected TWINE_USERNAME/TWINE_PASSWORD vars inject into tag
pipelines. Twine 6+ sees them set and uses classic auth directly,
skipping Trusted Publishing (which can't work for self-hosted
git.unturf.com — see docs/PYPI-TRUSTED-PUBLISHING.md).

What this commit changes:
  - .gitlab-ci.yml drops the --trusted-publishing flag (unrecognized
    by the runner's twine anyway) — twine sees env vars and is happy
  - pyproject.toml stays on the latest setuptools (no <77 cap needed
    since we're not pinning twine<6 anymore)
  - Diagnostic for TWINE_USERNAME/TWINE_PASSWORD presence stays so
    future failures surface fast

.gitlab-ci.yml

@@ -51,7 +51,8 @@ pypi-twine:
     - pip install build twine
     - python -m build
     - twine check dist/*
-    # --trusted-publishing never: twine 6 defaults to attempting OIDC
-    # when it detects GitLab CI, even if TWINE_USERNAME/TWINE_PASSWORD
-    # are set. Explicitly disable OIDC so it uses the env vars directly.
-    - twine upload --non-interactive --trusted-publishing never dist/*
+    # Twine 6 prefers Trusted Publishing IF TWINE_USERNAME/TWINE_PASSWORD
+    # are unset. With both set, classic auth is used directly. If the
+    # diagnostic above shows MISSING, fix the group var Protected flag
+    # or mark tags as Protected refs on the python/ group.
+    - twine upload --non-interactive dist/*

erldistpy/__init__.py

@@ -1,6 +1,6 @@
 """erldistpy — native Python client for our Erlang distribution protocol."""
 
-__version__ = "0.1.5"
+__version__ = "0.1.6"
 
 from erldistpy.channel import Channel, ChannelError, IncomingMessage
 from erldistpy.epmd import EpmdError, EpmdInfo, lookup

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "erldistpy"
-version = "0.1.5"
+version = "0.1.6"
 description = "Native Python client for Erlang distribution protocol — EPMD + v6 handshake + gen_server call(), no asyncio."
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.10"