Ignore generic metadata files in counts

README.md

@@ -8,6 +8,7 @@ Tiny API that clones a Git repo and counts its non-empty lines of code.
 - Optional API key enforcement
 - Per-repo in-memory caching
 - Extension-based language breakdown
+- Generic project metadata files are ignored during counting
 - Basic rate limiting
 - Bounded concurrent scans so the host does not get hammered
 - SSH key file support for private repos
@@ -66,6 +67,12 @@ curl "http://localhost:3000/ssh/public-key?ssh_key=loc_via_git_ed25519"
 - The service also sweeps stale temp directories in case a process dies mid-scan.
 - Cache entries live in memory only and expire after `CACHE_TTL_MINUTES`.
 
+## Counting rules
+
+- Only text files are counted.
+- Empty lines are ignored.
+- Generic project metadata files are skipped with a filename blacklist, for example `package.json`, lockfiles, `tsconfig.json`, and similar config/build files.
+
 ## Configuration
 
 Copy `.env.example` to `.env` and adjust: