chore: remove legacy directories and cleanup docs

Author: KikuAI-lab

.gitignore

@@ -64,3 +64,16 @@ secrets/
 tmp/
 temp/
 *.tmp
+
+# Legacy/temporary directories
+api-template-ref/
+kiku-server-deploy/
+kikuai-api-template-private/
+llm-router/
+public-repo/
+reliapi-private/
+reliapi-private-temp/
+reliapi-wiki/
+reliapi_repo/
+v0-reliapi/
+wiki-temp/