docs: sanitized public CLAUDE.md (working context is private)

Author: vveerrgg

CLAUDE.md

@@ -0,0 +1,26 @@
+# CLAUDE.md — nostrwalletconnect
+
+## What this is
+Nostr Wallet Connect (NIP-47) SDK — pay invoices, check balance, create invoices. Part of the open-source OpenClaw Nostr toolkit. MIT licensed.
+
+## Install
+```
+pip install nostrwalletconnect
+```
+
+## Develop
+```
+python -m venv .venv && . .venv/bin/activate
+pip install -e ".[dev]"
+python -m pytest -q     # tests
+python -m build         # sdist + wheel
+```
+
+## Layout
+- `src/nostrwalletconnect/` — package source
+- `tests/` — pytest suite
+- `clawhub/` — ClawHub skill metadata (SKILL.md, metadata.json)
+
+## Conventions
+- Python + pyproject (hatchling). Pure-Python crypto (`cryptography`), zero native build deps.
+- Public, MIT-licensed, open source.