chore: add consistent mise.toml, justfile, and tooling config

justfile

@@ -9,6 +9,21 @@ _uv_orac := "uv run --project " + _proj + " --extra orac"
 _ensure_tools:
     @mise trust --yes . 2>/dev/null; mise install --quiet
 
+# Run all checks (fmt, lint)
+check: fmt-check lint
+
+# Format code
+fmt: _ensure_tools
+    @uv run ruff format .
+
+# Check formatting without changing files
+fmt-check: _ensure_tools
+    @uv run ruff format --check .
+
+# Lint
+lint: _ensure_tools
+    @uv run ruff check .
+
 # Receive LoRa packets (Ctrl-C to stop)
 rx *args: _ensure_tools
     @{{_uv}} {{source_directory()}}/simple_rx.py {{args}}

pyproject.toml

@@ -12,6 +12,9 @@ dependencies = [
 meshcore = ["donglora[meshcore]"]
 orac = ["donglora[orac]"]
 
+[dependency-groups]
+dev = ["ruff"]
+
 [tool.uv]
 package = false