Use Forgejo workflows and registry

.forgejo/pull_request_template.md

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+## Summary
+
+Describe the problem and the focused solution.
+
+## Verification
+
+- [ ] `python -m py_compile wlc_monitor.py`
+- [ ] `python -m unittest discover -v`
+- [ ] `python -m pip check`
+- [ ] Docker checks run, or not applicable
+- [ ] User-facing documentation updated, or not applicable
+- [ ] No credentials, private infrastructure data, runtime state, or personal data
+      are present in the diff
+
+## Operational impact
+
+Call out compatibility, configuration, alerting, state-migration, or deployment
+effects.