chore: update repository references to new organization and name

- Update git remote URL from hhl/hhl-claude-agents to hhl-infra/claude-code-hhl-toolkit
- Rename workspace file to match new repository name
- Update all documentation references to new organization (hhl-infra)
- Update Gitea URLs to new instance (gitea.hotserv.cloud)
- Update repository structure references in CLAUDE.md and planning docs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

CLAUDE.md

@@ -163,7 +163,7 @@ See [docs/reference-material/projman-implementation-plan.md](docs/reference-mate
 ⚠️ **See `docs/CORRECT-ARCHITECTURE.md` for the authoritative structure reference**
 
 ```
-hyperhivelabs/claude-plugins/
+hhl-infra/claude-code-hhl-toolkit/
 ├── .claude-plugin/
 │   └── marketplace.json
 ├── mcp-servers/                    # ← SHARED BY BOTH PLUGINS