fix: enable editing and management of hosts from included SSH config files

• Add SourceFile field to SSHHost struct to track config file origins
• Implement FindHostInAllConfigs() to locate hosts across all config files
• Fix "host not found" errors when editing/deleting hosts from included files
• Add GetAllConfigFiles() and GetAllConfigFilesFromBase() for config discovery
• Create UpdateSSHHostV2() and DeleteSSHHostV2() for cross-file operations
• Display config file source in edit and info forms for better visibility
• Add intelligent file selector for host addition when multiple configs exist
• Support -c parameter context with proper file resolution
• Exclude .backup files from Include directive processing
• Maintain backward compatibility with existing SSH config workflows

Resolves limitation where hosts from included config files could be viewed
but not edited, deleted, or properly managed through the interface.

internal/ui/file_selector.go

@@ -0,0 +1,162 @@
+package ui
+
+import (
+	"fmt"
+	"path/filepath"
+	"sshm/internal/config"
+	"strings"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type fileSelectorModel struct {
+	files        []string // Chemins absolus des fichiers
+	displayNames []string // Noms d'affichage conviviaux
+	selected     int
+	styles       Styles
+	width        int
+	height       int
+	title        string
+}
+
+type fileSelectorMsg struct {
+	selectedFile string
+	cancelled    bool
+}
+
+// NewFileSelector creates a new file selector for choosing config files
+func NewFileSelector(title string, styles Styles, width, height int) (*fileSelectorModel, error) {
+	files, err := config.GetAllConfigFiles()
+	if err != nil {
+		return nil, err
+	}
+
+	return newFileSelectorFromFiles(title, styles, width, height, files)
+}
+
+// NewFileSelectorFromBase creates a new file selector starting from a specific base config file
+func NewFileSelectorFromBase(title string, styles Styles, width, height int, baseConfigFile string) (*fileSelectorModel, error) {
+	var files []string
+	var err error
+
+	if baseConfigFile != "" {
+		files, err = config.GetAllConfigFilesFromBase(baseConfigFile)
+	} else {
+		files, err = config.GetAllConfigFiles()
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return newFileSelectorFromFiles(title, styles, width, height, files)
+}
+
+// newFileSelectorFromFiles creates a file selector from a list of files
+func newFileSelectorFromFiles(title string, styles Styles, width, height int, files []string) (*fileSelectorModel, error) {
+
+	// Convert absolute paths to more user-friendly names
+	var displayNames []string
+	homeDir, _ := config.GetSSHDirectory()
+
+	for _, file := range files {
+		// Check if it's the main config file
+		mainConfig, _ := config.GetDefaultSSHConfigPath()
+		if file == mainConfig {
+			displayNames = append(displayNames, "Main SSH Config (~/.ssh/config)")
+		} else {
+			// Try to make path relative to home/.ssh/
+			if strings.HasPrefix(file, homeDir) {
+				relPath, err := filepath.Rel(homeDir, file)
+				if err == nil {
+					displayNames = append(displayNames, fmt.Sprintf("~/.ssh/%s", relPath))
+				} else {
+					displayNames = append(displayNames, file)
+				}
+			} else {
+				displayNames = append(displayNames, file)
+			}
+		}
+	}
+
+	return &fileSelectorModel{
+		files:        files,
+		displayNames: displayNames,
+		selected:     0,
+		styles:       styles,
+		width:        width,
+		height:       height,
+		title:        title,
+	}, nil
+}
+
+func (m *fileSelectorModel) Init() tea.Cmd {
+	return nil
+}
+
+func (m *fileSelectorModel) Update(msg tea.Msg) (*fileSelectorModel, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		m.width = msg.Width
+		m.height = msg.Height
+		m.styles = NewStyles(m.width)
+		return m, nil
+
+	case tea.KeyMsg:
+		switch msg.String() {
+		case "ctrl+c", "esc":
+			return m, func() tea.Msg {
+				return fileSelectorMsg{cancelled: true}
+			}
+
+		case "enter":
+			selectedFile := ""
+			if m.selected < len(m.files) {
+				selectedFile = m.files[m.selected]
+			}
+			return m, func() tea.Msg {
+				return fileSelectorMsg{selectedFile: selectedFile}
+			}
+
+		case "up", "k":
+			if m.selected > 0 {
+				m.selected--
+			}
+
+		case "down", "j":
+			if m.selected < len(m.files)-1 {
+				m.selected++
+			}
+		}
+	}
+
+	return m, nil
+}
+
+func (m *fileSelectorModel) View() string {
+	var b strings.Builder
+
+	b.WriteString(m.styles.FormTitle.Render(m.title))
+	b.WriteString("\n\n")
+
+	if len(m.files) == 0 {
+		b.WriteString(m.styles.Error.Render("No SSH config files found."))
+		b.WriteString("\n\n")
+		b.WriteString(m.styles.FormHelp.Render("Esc: cancel"))
+		return b.String()
+	}
+
+	for i, displayName := range m.displayNames {
+		if i == m.selected {
+			b.WriteString(m.styles.Selected.Render(fmt.Sprintf("▶ %s", displayName)))
+		} else {
+			b.WriteString(fmt.Sprintf("  %s", displayName))
+		}
+		b.WriteString("\n")
+	}
+
+	b.WriteString("\n")
+	b.WriteString(m.styles.FormHelp.Render("↑/↓: navigate • Enter: select • Esc: cancel"))
+
+	return b.String()
+}