[Architecture Feedback] Multi-agent orchestration system for solo TPE — LangGraph + Nextcloud

**Description**

I’m a solo entrepreneur running a renovation company (Brittany, France). I’m designing a multi-agent orchestration system to automate my business processes across 6 areas (admin/finance, commercial, technical studies, procurement, operations, cross-functional).

**Stack**

- LangGraph (Parent `EnterpriseState` + subgraphs per process area)

- OpenWebUI (frontend + Pipe)

- Nextcloud (Deck, Tables, Files)

- PostgreSQL (persistence)

**Constraint**

Single human validator (me) → Pull Flow via `interrupt()`, WIP limits, automated DoD checks before each human touchpoint.

**Questions**

1. Is this architecture coherent overall?

2. Any known pitfalls with `interrupt` + `Command(resume=…)` in a production setting?

3. Has anyone integrated Nextcloud (WebDAV / Deck API) as a document backend with LangGraph agents?

**Additional context**

Happy to share more details if needed. Thanks for any feedback!