Bump langchain-openai to 1.x

Aligns with the langchain 1.0+ pins already in pyproject.toml.

Co-Authored-By: Claude Opus 4.7 noreply@anthropic.com (@bowen-0)

Add wiki contributor handover doc

CONTRIBUTING.md walks SMEs and challenge owners through the three runtimes (Cowork / Claude.ai Projects / ChatGPT), what each can and can't do, and the step-by-step setup from scratch. README points human contributors at (@bowen-0)

Add wiki-grounded Q&A to risk-assessment agent

Adds three filesystem-backed tools (list_wiki_pages, read_wiki_page, search_wiki) to the chat node so the agent can answer questions about the Sandbox Knowledge Hub corpus and ground risk discussions in prior (@bowen-0)

Merge pull request #2 from MarcoFurrer/basic-setup

demo (@bowen-0)

demo (@MarcoFurrer)

Merge pull request #1 from MarcoFurrer/basic-setup

frontend + agent setup (@bowen-0)

commit (@MarcoFurrer)

frontend + agent setup (@MarcoFurrer)

Add portable query procedure: QUERY.md + Claude skill

Ships an answering procedure with the wiki so any LLM consumer (Claude Code, Agent SDK, ChatGPT, custom GPT, internal RAG) inherits the same voice, citation discipline, and gap-honesty without bespoke (@bowen-0)

Deepen wiki: 5 themes, 14 cross-cutting principles, 8 stakeholders, 8 concepts/regs

Substantial expansion of the wiki knowledge layer following the challenge owner's endorsement of the structure. 45 new pages + 4 edits + .gitignore update for .obsidian/ e (@bowen-0)

Bootstrap wiki/ knowledge layer and collaboration scaffolding

Adds the LLM-wiki substrate the architecture-route + data-architecture- walkthrough decision docs called for. 49 seed pages across the seven folders (projects, concepts, regulations, stakeholde (@bowen-0)

Ingest Phase II EN overview booklet shared by challenge owner

Adds the English version of the Phase II overview ("Build & Share — A Sandbox for Enabling the AI Ecosystem", May 2026) that Lukas Willi shared on 2026-05-28, closing the EN gap previously flag (@bowen-0)