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

deny.toml

@@ -0,0 +1,34 @@
+# cargo-deny configuration (v0.19+)
+# Run with: cargo deny check
+
+[licenses]
+version = 2
+
+# Permissive licenses only. No copyleft.
+allow = [
+    "MIT",
+    "MIT-0",
+    "Apache-2.0",
+    "BSD-1-Clause",
+    "BSD-2-Clause",
+    "BSD-3-Clause",
+    "BSL-1.0",
+    "ISC",
+    "Zlib",
+    "Unlicense",
+    "CC0-1.0",
+    "CDLA-Permissive-2.0",
+    "Unicode-3.0",
+    "MPL-2.0",
+]
+
+[advisories]
+
+[bans]
+multiple-versions = "warn"
+wildcards = "warn"
+
+[sources]
+unknown-registry = "deny"
+unknown-git = "warn"
+allow-git = []

justfile

@@ -2,18 +2,49 @@ set shell := ["bash", "-c"]
 
 default: run
 
+[private]
+_ensure_tools:
+    @mise trust --yes . 2>/dev/null; mise install --quiet
+
 # Run the mux daemon
-run *args:
+run *args: _ensure_tools
     cargo run -- {{args}}
 
 # Run with verbose logging
-verbose *args:
+verbose *args: _ensure_tools
     cargo run -- --verbose {{args}}
 
-# Run clippy and tests
-check:
-    cargo clippy -- -D warnings && cargo test
+# Run all checks (fmt, clippy, test, audit)
+check: fmt-check clippy test audit
+
+# Format code
+fmt: _ensure_tools
+    cargo fmt
+
+# Check formatting without changing files
+fmt-check: _ensure_tools
+    cargo fmt --check
+
+# Lint with clippy
+clippy: _ensure_tools
+    cargo clippy --all-targets -- -D warnings
+
+# Run tests
+test: _ensure_tools
+    cargo test
+
+# Security + license audit
+audit: _ensure_tools
+    cargo deny check
 
 # Build release
-build:
+build: _ensure_tools
     cargo build --release
+
+# Check for outdated dependencies
+outdated: _ensure_tools
+    cargo outdated
+
+# Clean build artifacts
+clean:
+    cargo clean

mise.toml

@@ -0,0 +1,3 @@
+[tools]
+rust = "1.94"
+just = "latest"

rustfmt.toml

@@ -0,0 +1,3 @@
+edition = "2024"
+max_width = 120
+use_small_heuristics = "Max"