feat: add explicit sidebar placement control and responsive design (1024-1280px)

- Add sidebar field to SkillCategory model for explicit left/right control
- Update splitSkills to respect sidebar field instead of automatic splitting
- Add responsive CSS for 1024-1280px: collapse labels, icons-only buttons, EN/ES language selector
- Remove language switcher animations
- Ensure desktop view (>1280px) always shows full sidebar content
- Move Databases and Infrastructure to right sidebar
- Reduce font sizes in responsive range
- Update project logos (Lidering, Jorpack, Delivery Bikes)

internal/handlers/cv.go

@@ -199,21 +199,22 @@ func (h *CVHandler) ExportPDF(w http.ResponseWriter, r *http.Request) {
 }
 
 // splitSkills splits skill categories between left (page 1) and right (page 2) sidebars
-// Left sidebar shows first 7 categories, right sidebar shows remaining categories
+// Each category explicitly specifies which sidebar it belongs to via the "sidebar" field
 func splitSkills(skills []models.SkillCategory) (left, right []models.SkillCategory) {
 	if len(skills) == 0 {
 		return nil, nil
 	}
 
-	// Split at index 7 (first 7 items on left)
-	splitIndex := 7
-	if len(skills) < splitIndex {
-		return skills, nil
+	// Filter by sidebar field
+	for _, skill := range skills {
+		if skill.Sidebar == "right" {
+			right = append(right, skill)
+		} else {
+			// Default to left if not specified or if set to "left"
+			left = append(left, skill)
+		}
 	}
 
-	left = skills[:splitIndex]
-	right = skills[splitIndex:]
-
 	return left, right
 }
 

internal/models/cv.go

@@ -89,6 +89,7 @@ type SkillCategory struct {
 	Category    string   `json:"category"`
 	Proficiency int      `json:"proficiency"`
 	Items       []string `json:"items"`
+	Sidebar     string   `json:"sidebar"` // "left" or "right"
 }
 
 type Language struct {