Migrate to new Gitea instance (gitea.wbd-rd.nl)

- Update all submodule URLs from gitea.centraal.wbd-rd.nl to gitea.wbd-rd.nl
- Add settler as proper submodule in .gitmodules
- Add agent skills, function anchors, decisions, and improvements
- Add Docker configuration and scripts
- Add manuals and third_party docs
- Update .gitignore with secrets and build artifacts
- Remove stale .tgz build artifact

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.agents/decisions/README.md

@@ -0,0 +1,15 @@
+# EVOLV Decision Log
+
+Use this folder to store high-impact agent/user decisions that affect compatibility, safety, security, schema, or rollout risk.
+
+Naming:
+- `DECISION-YYYYMMDD-<slug>.md`
+
+When to log:
+- topic/payload/API contract changes
+- safety envelope or fail-safe strategy changes
+- security posture/default changes
+- Influx retention/backfill/schema tradeoffs
+- explicit acceptance of deferred high-risk debt
+
+Start from `DECISION_TEMPLATE.md` for new entries.