Add justfile — task runner for the project

justfile

@@ -0,0 +1,89 @@
+# wt-cli-rust — task runner
+# Install just: cargo install just
+# Run `just` to see all available recipes
+
+default:
+    @just --list
+
+# Build the project
+build:
+    cargo build
+
+# Build in release mode (optimized)
+release:
+    cargo build --release
+
+# Run the binary
+run:
+    cargo run
+
+# Run all tests
+test:
+    cargo test
+
+# Run tests with output printed
+test-verbose:
+    cargo test -- --nocapture
+
+# Run clippy linter
+lint:
+    cargo clippy -- -D warnings
+
+# Format code (writes in place)
+fmt:
+    cargo fmt
+
+# Check formatting without changing files
+fmt-check:
+    cargo fmt -- --check
+
+# Full check: format + lint + test
+check: fmt-check lint test
+
+# Watch for changes and rerun tests (requires cargo-watch)
+watch:
+    cargo watch -x test
+
+# Clean build artifacts
+clean:
+    cargo clean
+
+# AI-powered commit using claude CLI
+# Stages all changes, generates a commit message, commits, and pushes.
+# Requires: claude CLI (npm i -g @anthropic-ai/claude-code)
+commit:
+    #!/usr/bin/env bash
+    set -euo pipefail
+
+    if ! command -v claude &>/dev/null; then
+        echo "Error: claude CLI not found."
+        echo "Install with: npm i -g @anthropic-ai/claude-code"
+        exit 1
+    fi
+
+    if [ -z "$(git status --porcelain)" ]; then
+        echo "Nothing to commit."
+        exit 0
+    fi
+
+    # Stage everything
+    git add -A
+
+    # Generate commit message from the diff
+    MSG=$(claude -p "Look at the staged git diff and generate ONE concise conventional commit message. \
+Only output the message text. Format: type(scope?): summary. Use feat/fix/refactor/test/chore/docs. \
+No body, no footer, just the first line. Keep it under 72 chars." \
+    --allowedTools "Bash(git diff --cached*),Read" 2>/dev/null)
+
+    if [ -z "$MSG" ]; then
+        echo "Error: claude returned empty message. Commiting with fallback."
+        git commit -m "chore: update files"
+    else
+        git commit -m "$MSG"
+    fi
+
+    git push
+    echo "Pushed: $MSG"
+
+# Quick alias: just ac = stage all + AI commit
+ac: commit