feat: update ks-cookbook/example-new/cli-client-logic (KS-850)

[Eloy-knowledgestack]

Summary

Type of change

• 🚀 New flagship (flagships/<name>/)
• 🧑‍🍳 New recipe (recipes/<name>/)
• 🔌 New framework integration (LangChain, LangGraph, CrewAI, Temporal, …)
• 🐛 Bug fix
• 📖 Documentation / wiki
• 🧰 Tooling / CI / dev setup
• 🧹 Refactor (no behavior change)
• 💥 Breaking change (describe migration in "Notes")

Related issues

What changed

How to review

# e.g.
CORPUS_FOLDER_ID=<your-folder> make demo-<slug>

Test plan

• make lint passes
• make test passes (MCP unit tests)
• make demo-<slug> runs end-to-end (if flagship/recipe work)
• Screenshots / sample output attached (if UI-ish or format change)

Checklist

• I've read CONTRIBUTING.md and the relevant cursor rule
• No API keys, tokens, or PII in the diff
• Every non-trivial claim in the agent output is cited (Citation.chunk_id or [chunk:<uuid>])
• Seed-data expectations documented (either in the flagship README or updating the Seed data wiki page)
• Workspace pyproject.toml updated if a new package was added
• Makefile target added/updated if a new flagship was added
• CHANGELOG.md updated under [Unreleased]

Notes