fix: References section link corruption and download filename issues

**Issue 1: URL corruption in "See this CV in..." links**
- Bug: replaceYearPlaceholder used fmt.Sprintf on ALL URLs
- URLs like "/?lang=es" were corrupted to "/?lang=es%!(EXTRA string=2025)"
- Fix: Changed to strings.ReplaceAll("{{YEAR}}", year)
- Result: Only replaces actual {{YEAR}} placeholders, leaves other URLs intact

**Issue 2: Download filename not respected**
- Bug: Shortcut URLs (cv-jamr-2025-en.pdf) redirected with HTTP 301
- Browsers used original URL filename instead of Content-Disposition header
- Fix: Generate PDF directly in DefaultCVShortcut handler
- Result: Returns PDF with correct filename in Content-Disposition header

Files changed:
- internal/models/cv.go: Fixed replaceYearPlaceholder function
- internal/handlers/cv.go: Changed redirect to direct PDF generation

Both fixes verified:
- "See this CV in Spanish" link: href="/?lang=es" ✓
- Download link: filename=cv-jamr-2025-en.pdf ✓

internal/handlers/cv.go

@@ -260,13 +260,46 @@ func (h *CVHandler) DefaultCVShortcut(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	// Build redirect URL with default parameters (short + with_skills)
-	redirectURL := fmt.Sprintf("/export/pdf?lang=%s&length=short&icons=show&version=with_skills", lang)
+	// Generate PDF directly instead of redirecting
+	// This ensures the Content-Disposition filename is respected by browsers
+	log.Printf("Shortcut URL: %s → generating PDF (short + with_skills)", path)
 
-	log.Printf("Shortcut URL: %s → %s", path, redirectURL)
+	// Prepare cookies for PDF generation (short, with_skills, light mode)
+	cookies := map[string]string{
+		"cv-length":    "short",
+		"cv-icons":     "show",
+		"cv-language":  lang,
+		"cv-theme":     "default", // with_skills = default theme
+		"color-theme":  "light",   // Always light for PDFs
+	}
 
-	// Redirect to PDF export endpoint
-	http.Redirect(w, r, redirectURL, http.StatusMovedPermanently)
+	// Construct URL for PDF generation
+	targetURL := fmt.Sprintf("http://%s/?lang=%s", h.serverAddr, lang)
+
+	// Generate PDF with screen render mode (for sidebar layout)
+	ctx := r.Context()
+	pdfData, err := h.pdfGenerator.GenerateFromURLWithOptions(ctx, targetURL, cookies, pdf.RenderModeScreen)
+	if err != nil {
+		log.Printf("PDF generation failed for shortcut URL: %v", err)
+		HandleError(w, r, InternalError(err))
+		return
+	}
+
+	// Use the shortcut filename directly (simple, user-friendly)
+	filename := filepath.Base(path) // cv-jamr-2025-en.pdf
+
+	// Set response headers with shortcut filename
+	w.Header().Set("Content-Type", "application/pdf")
+	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s", filename))
+	w.Header().Set("Content-Length", fmt.Sprintf("%d", len(pdfData)))
+
+	// Write PDF data
+	if _, err := w.Write(pdfData); err != nil {
+		log.Printf("Error writing PDF response: %v", err)
+		return
+	}
+
+	log.Printf("PDF generated successfully: %s (%d bytes)", filename, len(pdfData))
 }
 
 // ExportPDF handles PDF export requests using chromedp

internal/models/cv.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"html/template"
 	"os"
+	"strings"
 	"time"
 )
 
@@ -241,7 +242,7 @@ func LoadCV(lang string) (*CV, error) {
 
 // replaceYearPlaceholder replaces {{YEAR}} with the current year
 func replaceYearPlaceholder(url string, year string) string {
-	return fmt.Sprintf(url, year)
+	return strings.ReplaceAll(url, "{{YEAR}}", year)
 }
 
 // LoadUI loads UI translations from a JSON file for the specified language