feat: vCard 扩展 + 格式扩展 + 解码透视矫正 — v0.3.0

Phase 1: 格式扩展
- png.rs → image.rs，OutputFormat 枚举 (PNG/BMP/JPEG/WebP)
- CLI -f/--format，Web fmt 参数扩展，image crate +bmp feature

Phase 2: 解码增强
- 新增 decoder/perspective.rs — 旋转矫正（MVP）
- auto_correct: finder 检测→计算旋转角→仿射变换→再解码
- decode_image 自动重试矫正流水线

Phase 3: vCard 扩展
- 新增 5 字段：TITLE/URL/BDAY/NOTE/PHOTO
- Rust text_builder + TS qrText + VCardMode UI 同步
- CLI 新增 --title --vcard-url --birthday --note --photo
- 中/英 i18n 翻译

测试: 81 Rust + 19 前端全部通过

core/src/text_builder.rs

@@ -8,15 +8,42 @@ pub fn build_wifi_text(ssid: &str, password: &str, encryption: &str, hidden: boo
     format!("WIFI:T:{encryption};S:{ssid};P:{password};{h};")
 }
 
-/// 构造 vCard 字符串
+/// 构造 vCard 3.0 字符串（含扩展字段）
+#[allow(clippy::too_many_arguments)]
 pub fn build_vcard_text(
     name: &str,
     phone: &str,
     email: &str,
     company: &str,
     address: &str,
+    title: &str,
+    url: &str,
+    birthday: &str,
+    note: &str,
+    photo: &str,
 ) -> String {
-    format!("BEGIN:VCARD\nVERSION:3.0\nFN:{name}\nTEL:{phone}\nEMAIL:{email}\nORG:{company}\nADR:{address}\nEND:VCARD")
+    let mut s =
+        format!("BEGIN:VCARD\nVERSION:3.0\nFN:{name}\nTEL:{phone}\nEMAIL:{email}\nORG:{company}");
+    if !title.is_empty() {
+        s.push_str(&format!("\nTITLE:{title}"));
+    }
+    if !address.is_empty() {
+        s.push_str(&format!("\nADR:{address}"));
+    }
+    if !url.is_empty() {
+        s.push_str(&format!("\nURL:{url}"));
+    }
+    if !birthday.is_empty() {
+        s.push_str(&format!("\nBDAY:{birthday}"));
+    }
+    if !note.is_empty() {
+        s.push_str(&format!("\nNOTE:{note}"));
+    }
+    if !photo.is_empty() {
+        s.push_str(&format!("\nPHOTO:{photo}"));
+    }
+    s.push_str("\nEND:VCARD");
+    s
 }
 
 /// 构造 mailto 链接
@@ -71,10 +98,43 @@ mod tests {
 
     #[test]
     fn test_build_vcard_text() {
-        let text = build_vcard_text("张三", "13800138000", "a@b.com", "公司", "北京");
+        let text = build_vcard_text(
+            "张三",
+            "13800138000",
+            "a@b.com",
+            "公司",
+            "北京",
+            "",
+            "",
+            "",
+            "",
+            "",
+        );
         assert!(text.contains("BEGIN:VCARD"));
         assert!(text.contains("FN:张三"));
         assert!(text.contains("END:VCARD"));
+        assert!(!text.contains("TITLE:")); // 空字段不输出
+    }
+
+    #[test]
+    fn test_build_vcard_full() {
+        let text = build_vcard_text(
+            "张三",
+            "13800138000",
+            "a@b.com",
+            "公司",
+            "北京",
+            "工程师",
+            "https://z.com",
+            "1990-01-01",
+            "备注",
+            "https://z.com/p.jpg",
+        );
+        assert!(text.contains("TITLE:工程师"));
+        assert!(text.contains("URL:https://z.com"));
+        assert!(text.contains("BDAY:1990-01-01"));
+        assert!(text.contains("NOTE:备注"));
+        assert!(text.contains("PHOTO:https://z.com/p.jpg"));
     }
 
     #[test]