Initial commit: Node-RED MCP server (Python/FastMCP)

22-tool MCP server for Node-RED flow management with Pydantic models,
incremental flow patching, layout linting, and flexible auth (token,
basic, OAuth2). 137 tests, full ruff compliance.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Makefile

@@ -0,0 +1,17 @@
+.PHONY: all check test lint format fix
+
+all: format lint test
+
+check: lint test
+
+test:
+	uv run pytest tests/ -v
+
+lint:
+	uv run ruff check src/ tests/
+
+format:
+	uv run ruff format src/ tests/
+
+fix:
+	uv run ruff check --fix --unsafe-fixes src/ tests/