Add installer script, change repository feature, and update docs

- Add scripts/install.sh for one-command installation
- Add 'Change Repository' button in sidebar and toolbar
- Add 'Close Repository' menu item (Cmd+Shift+W)
- Update README with installation options

Author: Nicolas-Arsenault

GitFlow/App/GitFlowApp.swift

@@ -19,6 +19,12 @@ struct GitFlowApp: App {
                 }
                 .keyboardShortcut("o", modifiers: .command)
 
+                Button("Close Repository") {
+                    appState.closeRepository()
+                }
+                .keyboardShortcut("w", modifiers: [.command, .shift])
+                .disabled(appState.currentRepository == nil)
+
                 Divider()
 
                 Menu("Recent Repositories") {

GitFlow/Views/Main/MainWindow.swift

@@ -141,6 +141,7 @@ struct WelcomeView: View {
 
 /// Main repository view with navigation and content.
 struct RepositoryView: View {
+    @EnvironmentObject private var appState: AppState
     @ObservedObject var viewModel: RepositoryViewModel
 
     @State private var selectedSection: SidebarSection = .changes
@@ -152,6 +153,23 @@ struct RepositoryView: View {
                 viewModel: viewModel
             )
             .frame(minWidth: 200)
+            .safeAreaInset(edge: .bottom) {
+                Button(action: {
+                    appState.closeRepository()
+                }) {
+                    HStack(spacing: DSSpacing.iconTextSpacing) {
+                        Image(systemName: "chevron.left")
+                        Text("Change Repository")
+                    }
+                    .font(DSTypography.secondaryContent())
+                    .foregroundStyle(.secondary)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                    .padding(.horizontal, DSSpacing.md)
+                    .padding(.vertical, DSSpacing.sm)
+                }
+                .buttonStyle(.plain)
+                .background(Color(NSColor.separatorColor).opacity(0.1))
+            }
         } detail: {
             ContentArea(
                 selectedSection: selectedSection,
@@ -160,6 +178,15 @@ struct RepositoryView: View {
         }
         .navigationTitle(viewModel.repository.name)
         .toolbar {
+            ToolbarItemGroup(placement: .navigation) {
+                Button(action: {
+                    appState.closeRepository()
+                }) {
+                    Image(systemName: "folder.badge.gearshape")
+                }
+                .help("Change Repository")
+            }
+
             ToolbarItemGroup(placement: .primaryAction) {
                 if let branch = viewModel.currentBranch {
                     HStack(spacing: 4) {

README.md

@@ -8,18 +8,31 @@ A free, professional-grade Git GUI for macOS with best-in-class diff visualizati
 
 ## Install
 
-### Homebrew (Recommended)
+### Quick Install (Recommended)
+
+Run this command in Terminal:
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/Nicolas-Arsenault/GitFlow/main/scripts/install.sh | bash
+```
+
+This downloads, installs, and configures GitFlow automatically.
+
+### Homebrew
 
 ```bash
 brew tap nicolas-arsenault/tap
 brew install --cask gitflow-gui
 ```
 
-### Direct Download
-
-Download the latest DMG from [Releases](https://github.com/Nicolas-Arsenault/GitFlow/releases).
+### Manual Download
 
-> **Note:** On first launch, right-click the app and select "Open" (or run `xattr -cr /Applications/GitFlow.app` in Terminal) since the app isn't notarized yet.
+1. Download the latest DMG from [Releases](https://github.com/Nicolas-Arsenault/GitFlow/releases)
+2. Open the DMG and drag GitFlow to Applications
+3. Run this command to avoid security warnings:
+   ```bash
+   xattr -cr /Applications/GitFlow.app
+   ```
 
 ## Features
 

scripts/install.sh

@@ -0,0 +1,77 @@
+#!/bin/bash
+#
+# GitFlow Installer Script
+# Downloads and installs GitFlow, removing macOS quarantine to avoid security warnings.
+#
+
+set -e
+
+APP_NAME="GitFlow"
+VERSION="1.0.3"
+DMG_URL="https://github.com/Nicolas-Arsenault/GitFlow/releases/download/v${VERSION}/GitFlow-${VERSION}.dmg"
+DMG_FILE="/tmp/GitFlow-${VERSION}.dmg"
+MOUNT_POINT="/Volumes/GitFlow"
+INSTALL_PATH="/Applications"
+
+echo "╔════════════════════════════════════════╗"
+echo "║       GitFlow Installer v${VERSION}        ║"
+echo "╚════════════════════════════════════════╝"
+echo ""
+
+# Check if running on macOS
+if [[ "$(uname)" != "Darwin" ]]; then
+    echo "Error: This installer is for macOS only."
+    exit 1
+fi
+
+# Check macOS version (requires 13+)
+macos_version=$(sw_vers -productVersion | cut -d. -f1)
+if [[ "$macos_version" -lt 13 ]]; then
+    echo "Error: GitFlow requires macOS 13 (Ventura) or later."
+    echo "Your version: $(sw_vers -productVersion)"
+    exit 1
+fi
+
+# Download DMG
+echo "→ Downloading GitFlow v${VERSION}..."
+curl -L -o "$DMG_FILE" "$DMG_URL" --progress-bar
+
+# Unmount if already mounted
+if [[ -d "$MOUNT_POINT" ]]; then
+    echo "→ Unmounting existing volume..."
+    hdiutil detach "$MOUNT_POINT" -quiet 2>/dev/null || true
+fi
+
+# Mount DMG
+echo "→ Mounting disk image..."
+hdiutil attach "$DMG_FILE" -quiet
+
+# Remove old installation if exists
+if [[ -d "${INSTALL_PATH}/${APP_NAME}.app" ]]; then
+    echo "→ Removing previous installation..."
+    rm -rf "${INSTALL_PATH}/${APP_NAME}.app"
+fi
+
+# Copy app to Applications
+echo "→ Installing to /Applications..."
+cp -R "${MOUNT_POINT}/${APP_NAME}.app" "$INSTALL_PATH/"
+
+# Remove quarantine attribute (avoids Apple security warning)
+echo "→ Configuring security settings..."
+xattr -cr "${INSTALL_PATH}/${APP_NAME}.app"
+
+# Unmount DMG
+echo "→ Cleaning up..."
+hdiutil detach "$MOUNT_POINT" -quiet
+rm -f "$DMG_FILE"
+
+echo ""
+echo "✓ GitFlow has been installed successfully!"
+echo ""
+echo "You can now open GitFlow from:"
+echo "  • Applications folder"
+echo "  • Spotlight (Cmd+Space, type 'GitFlow')"
+echo ""
+echo "To open now, run:"
+echo "  open -a GitFlow"
+echo ""