feat: enhance shortcuts modal and complete logos-to-icons rename

This commit includes graphical keyboard icons integration, modal styling
improvements, and comprehensive "Logos" to "Icons" terminology update.

Changes:
- Add graphical keyboard icons using Iconify MDI (Tab, Ctrl, Cmd, Esc, etc.)
- Implement color scheme: black title, green subtitle/headers, blue kbd elements
- Add visual boxes with borders and shadows for section grouping
- Change modal from 3-column to 2-column grid layout (900px width)
- Fix critical bug: all 5 sections now render (was only showing 2)

Rename "Logos" to "Icons" across entire codebase:
- Go models: ToggleLogos → ToggleIcons, ShowLogos → ShowIcons
- Routes: /toggle/logos → /toggle/icons
- Templates: desktop-logo-toggle → desktop-icon-toggle, #logoToggle → #iconToggle
- JavaScript: logoToggles → iconToggles, sync logic updated
- CSS: .show-logos → .show-icons
- UI JSON: toggleLogos → toggleIcons
- Comments and labels updated

Technical details:
- Rebuilt Go binary to fix template rendering error
- Fixed JSON struct tag: json:"toggleLogos" → json:"toggleIcons"
- Updated kbd element styling for icon alignment (inline-flex)
- Added margin-bottom to subtitle (0.5rem)
- Grid now 2 columns for better 5-section layout

All 5 sections now render correctly:
1. Zoom Control
2. View Controls
3. Navigation
4. Actions
5. Browser Defaults

internal/handlers/cv.go

@@ -86,7 +86,7 @@ func (h *CVHandler) Home(w http.ResponseWriter, r *http.Request) {
 
 	// Read user preferences from cookies
 	cvLength := getPreferenceCookie(r, "cv-length", "short")
-	cvLogos := getPreferenceCookie(r, "cv-logos", "show")
+	cvIcons := getPreferenceCookie(r, "cv-icons", "show")
 	cvTheme := getPreferenceCookie(r, "cv-theme", "default")
 
 	// Prepare CV length class
@@ -108,7 +108,7 @@ func (h *CVHandler) Home(w http.ResponseWriter, r *http.Request) {
 		"AlternateEN":        "https://juan.andres.morenorub.io/?lang=en",
 		"AlternateES":        "https://juan.andres.morenorub.io/?lang=es",
 		"CVLengthClass":      cvLengthClass,
-		"ShowLogos":          (cvLogos == "show"),
+		"ShowIcons":          (cvIcons == "show"),
 		"ThemeClean":         (cvTheme == "clean"),
 	}
 
@@ -712,24 +712,24 @@ func (h *CVHandler) ToggleLength(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-// ToggleLogos handles logo visibility toggle using atomic out-of-band swaps
-func (h *CVHandler) ToggleLogos(w http.ResponseWriter, r *http.Request) {
+// ToggleIcons handles icon visibility toggle using atomic out-of-band swaps
+func (h *CVHandler) ToggleIcons(w http.ResponseWriter, r *http.Request) {
 	if r.Method != http.MethodPost {
 		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 		return
 	}
 
 	// Get current state
-	currentLogos := getPreferenceCookie(r, "cv-logos", "show")
+	currentIcons := getPreferenceCookie(r, "cv-icons", "show")
 
 	// Toggle state
-	newLogos := "hide"
-	if currentLogos == "hide" {
-		newLogos = "show"
+	newIcons := "hide"
+	if currentIcons == "hide" {
+		newIcons = "show"
 	}
 
 	// Save new state
-	setPreferenceCookie(w, "cv-logos", newLogos)
+	setPreferenceCookie(w, "cv-icons", newIcons)
 
 	// Get language
 	lang := r.URL.Query().Get("lang")
@@ -740,7 +740,7 @@ func (h *CVHandler) ToggleLogos(w http.ResponseWriter, r *http.Request) {
 	// Prepare template data with logo state
 	data := map[string]interface{}{
 		"Lang":      lang,
-		"ShowLogos": (newLogos == "show"),
+		"ShowIcons": (newIcons == "show"),
 	}
 
 	// Render logo-toggle template with out-of-band swaps
@@ -785,7 +785,7 @@ func (h *CVHandler) SwitchLanguage(w http.ResponseWriter, r *http.Request) {
 
 	// Preserve current length and logo preferences
 	cvLength := getPreferenceCookie(r, "cv-length", "short")
-	cvLogos := getPreferenceCookie(r, "cv-logos", "show")
+	cvIcons := getPreferenceCookie(r, "cv-icons", "show")
 	cvTheme := getPreferenceCookie(r, "cv-theme", "default")
 
 	// Add preferences to data
@@ -794,7 +794,7 @@ func (h *CVHandler) SwitchLanguage(w http.ResponseWriter, r *http.Request) {
 	} else {
 		data["CVLengthClass"] = "cv-short"
 	}
-	data["ShowLogos"] = (cvLogos == "show")
+	data["ShowIcons"] = (cvIcons == "show")
 	data["ThemeClean"] = (cvTheme == "clean")
 
 	// Render language-switch template with out-of-band swaps

internal/models/cv.go

@@ -195,7 +195,7 @@ type ShortcutGroup struct {
 	ZoomOut      *ShortcutItem `json:"zoomOut,omitempty"`
 	ZoomReset    *ShortcutItem `json:"zoomReset,omitempty"`
 	ToggleLength *ShortcutItem `json:"toggleLength,omitempty"`
-	ToggleLogos  *ShortcutItem `json:"toggleLogos,omitempty"`
+	ToggleIcons  *ShortcutItem `json:"toggleIcons,omitempty"`
 	ToggleTheme  *ShortcutItem `json:"toggleTheme,omitempty"`
 	ExpandAll    *ShortcutItem `json:"expandAll,omitempty"`
 	CollapseAll  *ShortcutItem `json:"collapseAll,omitempty"`

internal/routes/routes.go

@@ -20,7 +20,7 @@ func Setup(cvHandler *handlers.CVHandler, healthHandler *handlers.HealthHandler)
 	// HTMX endpoints for interactive controls
 	mux.HandleFunc("/switch-language", cvHandler.SwitchLanguage)
 	mux.HandleFunc("/toggle/length", cvHandler.ToggleLength)
-	mux.HandleFunc("/toggle/logos", cvHandler.ToggleLogos)
+	mux.HandleFunc("/toggle/icons", cvHandler.ToggleIcons)
 	mux.HandleFunc("/toggle/theme", cvHandler.ToggleTheme)
 
 	// Protected PDF endpoint with rate limiting (3 requests/minute per IP)