chore: improve just installation with binary fallback and better error handling

setup.sh

@@ -170,28 +170,117 @@ check_dependencies() {
 }
 
 install_just() {
+    # Try package managers first
     if [[ "$OSTYPE" == "darwin"* ]]; then
         if command -v brew &> /dev/null; then
             log_info "Installing just via Homebrew..."
-            brew install just
+            if brew install just; then
                 log_success "just installed"
+                return 0
             else
-            log_error "Homebrew not found. Please install just manually: https://github.com/casey/just#installation"
-            exit 1
+                log_warning "Homebrew installation failed, trying binary download..."
+            fi
         fi
     elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
         if command -v cargo &> /dev/null; then
             log_info "Installing just via cargo..."
-            cargo install just
+            if cargo install just; then
                 log_success "just installed"
+                return 0
             else
-            log_error "Cargo not found. Please install Rust or just manually: https://github.com/casey/just#installation"
+                log_warning "Cargo installation failed, trying binary download..."
+            fi
+        fi
+    fi
+
+    # Fall back to downloading pre-built binary
+    log_info "Downloading pre-built just binary..."
+
+    # Detect architecture
+    local arch=$(uname -m)
+    local os=$(uname -s | tr '[:upper:]' '[:lower:]')
+
+    # Map architecture names
+    case "$arch" in
+        x86_64) arch="x86_64" ;;
+        aarch64|arm64) arch="aarch64" ;;
+        *)
+            log_error "Unsupported architecture: $arch"
+            log_info "Please install just manually: https://github.com/casey/just#installation"
+            exit 1
+            ;;
+    esac
+
+    # Map OS names
+    case "$os" in
+        darwin) os="apple-darwin" ;;
+        linux) os="unknown-linux-musl" ;;
+        *)
+            log_error "Unsupported OS: $os"
+            log_info "Please install just manually: https://github.com/casey/just#installation"
+            exit 1
+            ;;
+    esac
+
+    local binary_name="just-${arch}-${os}"
+    local download_url="https://github.com/casey/just/releases/latest/download/${binary_name}.tar.gz"
+    local install_dir="$HOME/.local/bin"
+
+    # Create install directory
+    mkdir -p "$install_dir"
+
+    # Download and extract
+    local tmp_dir=$(mktemp -d)
+    trap "rm -rf $tmp_dir" EXIT
+
+    log_info "Downloading from: $download_url"
+    if ! curl -fsSL "$download_url" -o "$tmp_dir/just.tar.gz"; then
+        log_error "Failed to download just binary"
+        log_info "Please install just manually: https://github.com/casey/just#installation"
         exit 1
     fi
-    else
-        log_error "Unsupported OS. Please install just manually: https://github.com/casey/just#installation"
+
+    log_info "Extracting to $install_dir..."
+    if ! tar -xzf "$tmp_dir/just.tar.gz" -C "$tmp_dir"; then
+        log_error "Failed to extract just binary"
         exit 1
     fi
+
+    # Install binary
+    if ! mv "$tmp_dir/just" "$install_dir/just"; then
+        log_error "Failed to install just to $install_dir"
+        exit 1
+    fi
+
+    chmod +x "$install_dir/just"
+
+    # Add to PATH if not already there
+    if [[ ":$PATH:" != *":$install_dir:"* ]]; then
+        log_info "Adding $install_dir to PATH..."
+        export PATH="$install_dir:$PATH"
+
+        # Add to shell profile
+        local shell_profile=""
+        if [ -n "$BASH_VERSION" ]; then
+            shell_profile="$HOME/.bashrc"
+        elif [ -n "$ZSH_VERSION" ]; then
+            shell_profile="$HOME/.zshrc"
+        fi
+
+        if [ -n "$shell_profile" ]; then
+            echo "export PATH=\"$install_dir:\$PATH\"" >> "$shell_profile"
+            log_info "Added to $shell_profile (restart shell or run: source $shell_profile)"
+        fi
+    fi
+
+    # Verify installation
+    if command -v just &> /dev/null; then
+        log_success "just installed successfully to $install_dir/just"
+    else
+        log_warning "just installed to $install_dir/just but not found in PATH"
+        log_info "You may need to restart your terminal or run:"
+        log_info "  export PATH=\"$install_dir:\$PATH\""
+    fi
 }
 
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