Add support for Zig source files

Author: jedisct1

README.md

@@ -44,6 +44,7 @@ The server supports multiple programming languages and file extensions including
 - Rust (.rs)
 - Scala (.scala)
 - Shell scripts (.sh, .bash)
+- Zig (.zig)
 - Web files (.html, .css, .scss, .less, .sass, .stylus, .styl)
 - Template engines (.hbs, .handlebars, .ejs, .pug)
 - **Database & SQL**:

README_zh.md

@@ -44,6 +44,7 @@
 - Rust (.rs)
 - Scala (.scala)
 - Shell 指令碼 (.sh, .bash)
+- Zig (.zig)
 - Web 檔案 (.html, .css, .scss, .less, .sass, .stylus, .styl)
 - 模板引擎 (.hbs, .handlebars, .ejs, .pug)
 - **資料庫與 SQL**：

src/code_index_mcp/server.py

@@ -30,7 +30,7 @@
 supported_extensions = [
     '.py', '.js', '.ts', '.jsx', '.tsx', '.java', '.c', '.cpp', '.h', '.hpp',
     '.cs', '.go', '.rb', '.php', '.swift', '.kt', '.rs', '.scala', '.sh',
-    '.bash', '.html', '.css', '.scss', '.md', '.json', '.xml', '.yml', '.yaml',
+    '.bash', '.html', '.css', '.scss', '.md', '.json', '.xml', '.yml', '.yaml', '.zig',
     # Frontend frameworks
     '.vue', '.svelte', '.mjs', '.cjs',
     # Style languages