fix(pipeline): honor language filter for non-JS language runs

When a non-JS language filter is set (e.g., python), the previous logic
incorrectly allowed JS files through. Now the special case for 'js'
detection only applies when the language filter IS javascript or
typescript.

Addresses review feedback from Codex.

Author: avifenesh

lib/patterns/pipeline.js

@@ -152,7 +152,9 @@ function runPhase1(repoPath, targetFiles, language) {
     // Skip if language filter doesn't match file extension
     if (language) {
       const fileLanguage = analyzers.detectLanguage(file);
-      if (fileLanguage !== language && fileLanguage !== 'js') continue;
+      // For JS/TS language filter, accept both 'javascript' and 'js' detection results
+      const isJsFamily = (language === 'javascript' || language === 'typescript') && fileLanguage === 'js';
+      if (fileLanguage !== language && !isJsFamily) continue;
     }
 
     const filePath = path.isAbsolute(file) ? file : path.join(repoPath, file);