feat: add word and line count output in finalize method

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/meta_plugin/text.rs

@@ -232,7 +232,7 @@ impl MetaPlugin for TextMetaPlugin {
         }
         
         // If content is text and we have some data, output word and line counts
-        if self.is_binary_content == Some(false) && !self.buffer.is_empty() {
+        if self.is_binary_content == Some(false) && (!self.buffer.is_empty() || self.word_count > 0 || self.line_count > 0) {
             // Process any remaining data in utf8_buffer
             if !self.utf8_buffer.is_empty() {
                 self.count_text_stats(&[]);