refactor: rebrand from net.siegeln to io.cameleer
Institutionalize the product identity ahead of public release:
- Java package: net.siegeln.cameleer.saas → io.cameleer.saas (109 files)
- Maven groupId: net.siegeln.cameleer → io.cameleer
- Public image defaults: gitea.siegeln.net/cameleer/ → registry.cameleer.io/cameleer/
- Updated docs (architecture, user-manual, HOWTO, runtime-loader README)
- Updated CLAUDE.md path references
Internal build infra (CI workflows, .gitmodules, npm registry, Maven repo)
intentionally kept at gitea.siegeln.net — code stays on internal Gitea.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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