feat: add internationalization support and new command-line tools

- Add locale support with English and Chinese translations
- Introduce new jv and jvv command-line tools
- Replace jvc.rs with improved command structure
- Add utility modules for language selection and markdown coloring
- Update configuration and dependencies

2 files changed, 34 insertions, 0 deletions

diff --git a/src/utils/lang_selector.rs b/src/utils/lang_selector.rs
new file mode 100644
index 0000000..c3603ea
--- /dev/null
+++ b/src/utils/lang_selector.rs
@@ -0,0 +1,14 @@
+pub fn current_locales() -> String {
+    if let Ok(lang) = std::env::var("APP_LANG") {
+        return lang;
+    }
+
+    if let Ok(lang) = std::env::var("LANG") {
+        if let Some(base_lang) = lang.split('.').next() {
+            return base_lang.replace('_', "-");
+        }
+        return lang;
+    }
+
+    "en".to_string()
+}
diff --git a/src/utils/md_colored.rs b/src/utils/md_colored.rs
new file mode 100644
index 0000000..9991014
--- /dev/null
+++ b/src/utils/md_colored.rs
@@ -0,0 +1,20 @@
+use colored::*;
+use regex::Regex;
+
+pub fn md(text: impl AsRef<str>) -> String {
+    let bold_re = Regex::new(r"\*\*(.*?)\*\*").unwrap();
+    let mut result = bold_re
+        .replace_all(text.as_ref().trim(), |caps: &regex::Captures| {
+            format!("{}", caps[1].bold())
+        })
+        .to_string();
+
+    let italic_re = Regex::new(r"\*(.*?)\*").unwrap();
+    result = italic_re
+        .replace_all(&result, |caps: &regex::Captures| {
+            format!("{}", caps[1].italic())
+        })
+        .to_string();
+
+    result
+}